test: #87 T4 E2E XSS partage et lecteur + script serveur E2E avec progression

securite: #87 T3 cookies Secure centralises + CORS atteste (defaut inchange)
test: #87 T2 durcissement concurrence users.json et budget temps regex
2026-09-26 21:46:16 -04:00 · 2026-09-26 18:37:19 -04:00 · 2026-09-26 18:34:06 -04:00 · 2026-09-26 18:30:04 -04:00 · 2026-09-26 18:10:10 -04:00 · 2026-09-26 16:59:25 -04:00
136 changed files with 15132 additions and 4761 deletions
@@ -13,6 +13,9 @@ OBSIGATE_ADMIN_PASSWORD=chab30
 # OBSIGATE_ALLOW_INSECURE=false

 # Sécurité des cookies (activer si derrière HTTPS)
+# false par défaut : les navigateurs ignorent les cookies `Secure` en HTTP,
+# ce qui casserait les logins en local. En production (TLS + bind réseau),
+# posez true — un avertissement est loggé au démarrage sinon (#87).
 # OBSIGATE_SECURE_COOKIES=false

 # Tokens TTL en secondes
@@ -23,6 +26,8 @@ OBSIGATE_ADMIN_PASSWORD=chab30
 # OBSIGATE_LOGIN_MAX_ATTEMPTS=10
 # OBSIGATE_ACCOUNT_MAX_ATTEMPTS=10
 # OBSIGATE_LOGIN_WINDOW_SECONDS=900
+# Compteurs partagés/persistants (SQLite WAL, multi-workers) — défaut : mémoire.
+# OBSIGATE_RATELIMIT_DB=data/ratelimit.db

 # IP client derrière un reverse proxy (fait confiance à X-Forwarded-For)
 # OBSIGATE_TRUST_PROXY=false
@@ -38,9 +38,17 @@ jobs:
      - name: Frontend unit tests
        run: |
          node tests/frontend/unit.test.mjs
+          node tests/frontend/image-viewer.test.mjs
          node tests/frontend/pdf-viewer.test.mjs
          node tests/frontend/forge-completion.test.mjs
          node tests/frontend/config-mobile.test.mjs
+          node tests/frontend/settings-order-avatar.test.mjs
+          node tests/frontend/mobile-toolbar.test.mjs
+          node tests/frontend/upload.test.mjs
+          node tests/frontend/pretty.test.mjs
+          node tests/frontend/media-viewer.test.mjs
+          node tests/frontend/mfa-settings.test.mjs
+          node tests/frontend/config-ai-keys.test.mjs

      - name: Frontend JSDOM tests (PaneManager + Excalidraw + Plugins + AI + SW + Collab + Mobile + Semantic + Desktop + Inline edition)
        run: |
@@ -123,11 +131,17 @@ jobs:
          pip install bandit pip-audit
          pip install -r backend/requirements.txt

-      - name: Bandit (SAST)
-        run: bandit -r backend/ --skip B101,B110,B310 || echo "bandit found issues (non-blocking)"
+      - name: Bandit (SAST, bloquant — #87)
+        # B105 est exclu (aligné avec [tool.bandit] de pyproject.toml :
+        # faux positifs systématiques sur les noms de variables) ; les rares
+        # vrais positifs restants portent un `# nosec` justifié inline.
+        run: bandit -r backend/ --skip B101,B105,B110,B310

-      - name: Pip-audit (dependency vulnerabilities)
-        run: pip-audit || echo "pip-audit found vulnerabilities (non-blocking)"
+      - name: Pip-audit (consultatif — #87)
+        # Reste non bloquant tant que les montées de version requises
+        # (starlette via fastapi, weasyprint) ne sont pas qualifiées :
+        # upgrade FastAPI = chantier de régression dédié, hors périmètre.
+        run: pip-audit || echo "pip-audit found vulnerabilities (non-blocking, see #87)"

  # ── Docker build ──────────────────────────────────────────────────
  build:
@@ -189,6 +203,9 @@ jobs:
          npm ci
          npx playwright install --with-deps chromium

+      - name: Npm audit (bloquant — #87, 0 dépendance prod hors Playwright)
+        run: npm audit --omit=dev
+
      - name: Start ObsiGate
        run: |
          docker rm -f obsigate-e2e 2>/dev/null || true
@@ -44,9 +44,13 @@ node tests/frontend/unit.test.mjs
 # Tests JSDOM : node_modules dans tests/frontend/ (npm install là-bas si absent), ex :
 node tests/frontend/pane-manager.test.mjs

-# E2E (si UI touchée, ~5 min) : reproduit le job CI e2e (port 2029, auth désactivée)
+# E2E (si UI touchée, ~10 min) : reproduit le job CI e2e (port 2029, auth désactivée)
 npm run test:e2e                    # prérequis : uv, Node >= 20, npx playwright install chromium
 bash scripts/run-e2e-local.sh -g "nom du test"   # filtre / --headed
+
+# Windows sans bash exploitable (WSL HS, git-bash bloqué par App Control) :
+npm run test:e2e:ps                 # équivalent PowerShell, mêmes conditions que le CI
+pwsh -File scripts/run-e2e-local.ps1 -PlaywrightArgs @('-g','nom du test')
 ```

 - Un seul test backend : `.\.venv\Scripts\python.exe -m pytest tests/test_search.py -q`.
@@ -6,7 +6,7 @@ Format basé sur [Keep a Changelog](https://keepachangelog.com/fr/1.1.0/),
 et [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

 > **En cours de développement** : les changements à venir sont listés dans la section
-> [Unreleased](#unreleased). La dernière version livrée est **2.16.6**.
+> [Unreleased](#unreleased). La dernière version livrée est **2.28.4**.

 ---

@@ -14,6 +14,532 @@ et [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

 ---

+## [2.28.4] — 2026-09-26
+
+---
+
+## [2.28.3] — 2026-09-26
+
+---
+
+## [2.28.2] — 2026-09-26
+
+### Ajouté
+
+- **#87 (T4) — E2E XSS et serveur E2E piloté.**
+  `tests/e2e/xss.spec.js` : page publique `/s/{token}` (titre/frontmatter
+  hostile échappé, JSON neutralisé, aucun JS exécuté) et lecteur markdown
+  (sanitizer, aucun `on*`/`javascript:` vivant) — 2/2 verts en local.
+  `scripts/e2e-server.ps1` : `start|stop|status|logs` avec progression
+  visible et fichier PID (fini les serveurs orphelins sur le port 2029).
+
+- **#87 (T3) — cookies `Secure` et CORS explicites.**
+  Helper `is_secure_cookies()` centralisé (défaut `false` conservé pour ne
+  pas casser les logins HTTP locaux) + avertissement au démarrage sur bind
+  non-loopback sans `Secure` ; `tests/test_security_headers.py` atteste
+  l'absence de CORS permissif (same-origin par défaut du navigateur) et les
+  en-têtes de durcissement.
+
+- **#87 (T2) — tests de durcissement : concurrence et regex.**
+  `tests/test_hardening_concurrency.py` : créations/mises à jour/`login
+  failures` concurrents sur `users.json` (zéro mise à jour perdue, JSON
+  toujours récupérable) et budget temps de la politique ReDoS (motifs
+  catastrophiques rejetés en < 1 s, motifs acceptés < 5 s sur 200 Ko).
+
+---
+
+## [2.28.1] — 2026-09-26
+
+### Modifié
+
+- **#87 (T1) — CI sécurité durcie.**
+  `bandit` passe en bloquant (`# nosec` justifiés : SHA1 non-crypto,
+  subprocess git à argv fixe, `saxutils.escape` sans parsing ; B105 exclu
+  comme `pyproject.toml`) ; `npm audit --omit=dev` bloquant (0 faille) ;
+  les 5 suites frontend hors CI (`upload`, `pretty`, `media-viewer`,
+  `mfa-settings`, `config-ai-keys`, vertes en local) rejoignent le job
+  `lint`. `pip-audit` reste consultatif (upgrades starlette/weasyprint à
+  qualifier, chantier dédié).
+
+---
+
+## [2.28.0] — 2026-09-26
+
+---
+
+## [2.27.12] — 2026-09-26
+
+---
+
+## [2.27.11] — 2026-09-26
+
+---
+
+## [2.27.10] — 2026-09-26
+
+---
+
+## [2.27.9] — 2026-09-26
+
+---
+
+## [2.27.8] — 2026-09-26
+
+---
+
+## [2.27.7] — 2026-09-26
+
+---
+
+## [2.27.6] — 2026-09-26
+
+---
+
+## [2.27.5] — 2026-09-26
+
+---
+
+## [2.27.4] — 2026-09-26
+
+---
+
+## [2.27.3] — 2026-09-26
+
+---
+
+## [2.27.2] — 2026-09-26
+
+### Modifié
+
+- **#85 (T10) — persistance d'état et clôture de la refonte architecturale.**
+  Verrous `RLock` sur les stores JSON sans protection (`revoked_tokens`,
+  `shares`, `webhooks` + secrets, clés d'outils) avec tests de concurrence
+  (`tests/test_store_locks.py` — pertes prouvées sans verrou) ; rate-limit
+  auth persisté en option (`OBSIGATE_RATELIMIT_DB`, SQLite WAL, sémantique
+  identique, défaut mémoire inchangé, `tests/test_ratelimit_store.py`).
+  Contrat `tools/registry.py` audité (permissions/quotas/redaction déjà
+  câblés, rien à coder). Index non persisté : rebuild différentiel #86
+  suffisant (décision documentée). Fiche `docs/features/archi-refonte-85.md`,
+  #85 sorti du backlog (index roadmap).
+- **#85 (T9) — extraction realtime + render hors du monolithe `backend/main.py`.**
+  Le stream SSE `/api/events` et le WebSocket `/ws/collab/*` sont servis par
+  `backend/routers/realtime.py`, le pipeline markdown (mistune, wikilinks,
+  slugs, sanitizer) par `backend/render.py` (imports directs, plus de
+  couplage différé). `main.py` (4 827 → ~760 lignes) ne contient plus que
+  l'assemblage : lifespan, middlewares, montage des 16 routers, racine
+  `/api`, statique/SPA et cales de compatibilité testées.
+- **#85 (T8) — extraction vaults/history/conflicts hors du monolithe `backend/main.py`.**
+  13 routes servies par `backend/routers/vaults.py`, `history.py` et
+  `conflicts.py` ; `VaultInfo`/`BookmarkToggleRequest` dans `schemas.py`,
+  handle watcher partagé dans `backend/watcher_state.py`.
+  `tests/test_api_main.py` importe `humanize_mtime` depuis son module
+  canonique (`services.recent`).
+- **#85 (T7) — extraction du domaine `config` hors du monolithe `backend/main.py`.**
+  `/api/config`, ai-keys (get/post/delete/test), tool-keys (×3), ai-models,
+  diagnostics et dashboard sont servis par `backend/routers/config.py`
+  (`_FALLBACK_MODELS`, store clés et config déplacés ; `main` réimporte
+  `_load_config` pour son lifespan, les fixtures de tests inchangées).
+  `tests/test_ai_models.py` patch désormais la référence du router.
+- **#85 (T6c) — extraction media/pdf/export/guide hors du monolithe `backend/main.py`.**
+  file/pdf, exports (html/md-bundle/epub), guide/download, pdf/stream|info,
+  image, media+thumb, attachments (rescan/stats), vault settings (get/post/all)
+  et vault files sont servis par `backend/routers/files_media.py` ; le helper
+  Range partagé vit dans `backend/routers/helpers.py` (tags OpenAPI inchangés,
+  tests statiques frontend `media-viewer`/`image-viewer` réalignés).
+- **#85 (T6b) — extraction mutations fichiers/dossiers hors du monolithe `backend/main.py`.**
+  `PUT .../save|xlsx/save`, `DELETE/POST/PATCH /api/file`, `POST/PATCH/DELETE
+  /api/directory`, `POST /api/move`, `POST .../batch-upload` sont servis par
+  le nouveau `backend/routers/files_write.py` (effets de bord inchangés :
+  audit, index, SSE, webhooks, plugins, historique) ; 15 modèles dans
+  `schemas.py`.
+- **#85 (T6a) — extraction lecture fichiers hors du monolithe `backend/main.py`.**
+  `/api/browse/{vault}`, `/api/file/{vault}/raw|download|backlinks` et
+  `GET /api/file/{vault}` (vue rendue tous formats) sont servis par le
+  nouveau `backend/routers/files_read.py` ; modèles dans `schemas.py`,
+  `_content_disposition`/`_media_max_inline_bytes` dans
+  `backend/routers/helpers.py` (partagés avec les tranches suivantes).
+  Correctif au passage : décorateur orphelin `/s/{token}` resté en T3 et
+  double-enregistrement de `/api/conflicts` supprimés.
+- **#85 (T5) — extraction du domaine `search` hors du monolithe `backend/main.py`.**
+  Les 11 routes (`/api/search`, `/advanced`, `/replace`, `/tags`,
+  `/tree-search`, `/vault/{vault}/paths`, `/suggest`, `/tags/suggest`,
+  `/graph/{vault}`, `/index/reload`, `/index/reload/{vault}`) sont servies
+  par le nouveau `backend/routers/search.py` ; les modèles search dans
+  `schemas.py` et le pool de threads dans `backend/search_executor.py`
+  (même dimensionnement, même cycle de vie) — comportement inchangé.
+- **#85 (T4) — extraction du domaine `backups` hors du monolithe `backend/main.py`.**
+  Les 9 routes (`/api/file/{vault}/backups|diff|restore`, `/api/backups`,
+  `/delete`, `/purge`, `/content`, `/compress`, `/auto`) sont servies par le
+  nouveau `backend/routers/backups.py` ; `Diff/Restore*` déménagent dans
+  `schemas.py` et le singleton SSE dans `backend/sse.py` (partagé avec
+  `main`) — comportement inchangé, aucun impact utilisateur.
+- **#85 (T3) — extraction du domaine `sharing` hors du monolithe `backend/main.py`.**
+  `POST /api/share/{vault}`, `GET /api/shares`, `DELETE /api/share/{share_id}`
+  et les pages publiques `/s/{token}`, `/s/{token}/raw`, `/s/{token}/pdf`
+  sont servis par le nouveau `backend/routers/sharing.py` — chemins,
+  réponses, tags OpenAPI et authentification inchangés (aucun impact
+  utilisateur).
+- **#85 (T2) — extraction du domaine `webhooks` hors du monolithe `backend/main.py`.**
+  Le CRUD `GET/POST/PATCH/DELETE /api/webhooks` (admin) est servi par le
+  nouveau `backend/routers/webhooks.py` — chemins, réponses, tags OpenAPI et
+  authentification inchangés (aucun impact utilisateur).
+- **#85 (T1) — extraction du domaine `health` hors du monolithe `backend/main.py`.**
+  `GET /api/health` et `GET /api/health/detailed` (admin) sont servis par le
+  nouveau `backend/routers/health.py` (monté dans `main.py`) et le modèle
+  `HealthResponse` déménage dans `backend/schemas.py` — chemins, réponses,
+  tags OpenAPI et authentification inchangés (aucun impact utilisateur).
+
+---
+
+## [2.27.1] — 2026-09-26
+
+### Modifié
+
+- **Roadmap — priorisation dette & sécurité (décisions 2026-09-26).**
+  Items #85 (refonte architecturale) et #87 (CI/CD) détaillés et marqués
+  prioritaires : `backend/main.py` mesuré à ~4 827 lignes, `tools/registry.py`
+  à créer, persistance SQLite/Redis, verrous asyncio, audit des `except`
+  larges, CI sécurité bloquante (bandit/semgrep/trivy, audits pip/npm),
+  finition CSP nonce (BUG-034), cookies `Secure` par défaut, rotation clé
+  DeepSeek à confirmer (BUG-006). #73 Sync reporté (P4, hors chemin
+  critique) ; desktop #77 confirmé non signé + doc SmartScreen, reste les
+  6 tests E2E manuels. Corrections : sections livrées #83/#84 retirées du
+  backlog (détail dans l'archive, index inchangé), total restant recalculé
+  (~12-18 jours chemin critique : #77 fin + #85 + #87).
+
+---
+
+## [2.27.0] — 2026-09-25
+
+### Ajouté
+
+- **#152 — Viewer XLSX** : affichage des fichiers `.xlsx` en tableaux multi-feuilles (onglets,
+  en-têtes A1), édition inline des cellules avec `PUT /api/file/{vault}/xlsx/save` (backup avant
+  écriture, coercion numérique) et téléchargement du fichier d'origine.
+
+---
+
+## [2.25.1] — 2026-09-24
+
+### Corrigé
+
+- **`/api/diagnostics` — erreur 500 « dictionary changed size during iteration ».**
+  Le calcul des statistiques d'index itérait `inv.word_index` et `index` en
+  direct, pendant que l'indexeur les modifiait depuis un autre thread (build au
+  démarrage, hooks incrémentaux) : l'itérateur de dict levait `RuntimeError` et
+  l'endpoint renvoyait 500. Les deux dicts sont désormais **copiés avant
+  itération** (copie atomique sous le GIL), ce qui supprime la course.
+
+---
+
+## [2.25.0] — 2026-09-24
+
+### Ajouté
+
+- **#115 — barre d'outils de lecture toujours visible.** La barre d'actions d'un
+  document (pop-out, bookmark, Editer, Source, Copier, Partager…) est désormais
+  **épinglée en haut** de la zone de lecture : elle reste accessible en permanence,
+  même au bas d'un document long, au lieu de disparaître au défilement. Elle est
+  rendue comme un enfant direct du conteneur de défilement (`.file-toolbar`), masquée
+  en mode lecture, et alignée dans la fenêtre pop-out.
+- **#117 — avatars prédéfinis dans le profil.** La section **Profil** propose une
+  galerie de **12 avatars** fournis avec l'application (`frontend/icons/avatar/`) :
+  un clic charge l'image, la recadre au format carré 256 px (même pipeline que
+  l'import) et l'enregistre sur le compte. L'avatar actif est surligné ; l'import
+  d'une photo personnalisée et la suppression restent disponibles.
+
+### Corrigé
+
+- **BUG-078 — coloration syntaxique des fichiers de code perdue.** Les feuilles de
+  style highlight.js étaient basculées à partir de la **clé de thème**
+  (`defaut-obsigate`, …) au lieu du **mode** (`dark`/`light`) : les deux feuilles se
+  retrouvaient désactivées et les blocs de code (`.py`, `.sh`, `.ps1`, `.yml`, JSON,
+  blocs Markdown…) s'affichaient en texte brut. Le basculement est désormais piloté
+  par le mode, de façon déterministe, dans le moteur de thème (`themes.js`) comme au
+  premier rendu (`ui.js`) ; sépia et contraste élevé réutilisent la palette claire.
+
+---
+
+## [2.24.0] — 2026-09-24
+
+### Ajouté
+
+- **BUG-077 — assistant IA : bouton « Stop ».** Pendant qu'une réponse se diffuse, le
+  bouton d'envoi du composeur devient un bouton **Stop** (icône carrée, couleur
+  d'alerte) : un clic interrompt immédiatement l'exécution de l'agent (abort de la
+  requête SSE, annulation de la tâche côté serveur à la déconnexion) et la réponse
+  partielle est conservée avec un marqueur « ⏹ Exécution arrêtée. ». Le bouton reste
+  actif (il n'est plus désactivé) tant que l'agent travaille, y compris pendant la
+  reprise d'une confirmation.
+
+### Modifié
+
+- **BUG-075 — assistant IA : approbation globale des actions.** Une même réponse du
+  modèle peut demander **plusieurs** mutations (créer un dossier et les fichiers
+  qu'il contient…). Elles sont désormais **regroupées en une seule confirmation** (au
+  lieu d'une action après l'autre) : la carte liste chaque action avec son libellé et
+  son aperçu de diff, et un unique bouton « **Tout approuver (N)** » envoie
+  `confirm_all` — les actions en attente sont appliquées d'un bloc, puis la suite de
+  l'exécution est autorisée sans nouvelle carte. Les appels en lecture du même lot
+  s'exécutent immédiatement (conversation valide). Côté backend, `pending.actions`
+  remplace le report `deferred` des mutations d'un lot (`backend/agent/loop.py`) et
+  `confirm_all` arme `ToolContext.confirmed` pour le reste du run
+  (`backend/bookslm_routes.py`).
+
+### Corrigé
+
+- **BUG-074 — assistant IA : bloc d'étapes sans titre et compteur figé à 1.** Le
+  résumé replié affiche désormais un **titre** (le libellé de la première action,
+  « N étapes — Fichier créé : notes/a.md ▶ »), le compteur ne compte plus les
+  **réflexions** (seules les actions) et la reprise d'une confirmation continue de
+  diffuser dans **le même message** au lieu de créer un nouveau message « 1 étape »
+  par approbation : le bloc d'étapes s'accumule sur tout l'échange.
+- **BUG-076 — assistant IA : arborescence et document ouvert non rafraîchis.** Après
+  une action mutatrice de l'agent (création/suppression/renommage de fichier ou
+  dossier, écriture), l'arborescence est rafraîchie immédiatement (rafraîchissement
+  débouncé sur les événements `tool` mutateurs, sans attendre le watcher) et le
+  document affiché est rechargé depuis le disque ; les outils de création de documents
+  (xlsx/docx/csv/pdf) notifient désormais aussi la visionneuse.
+
+---
+
+## [2.23.0] — 2026-09-24
+
+### Ajouté
+
+- **#114 — Configuration, refonte mobile-responsive.** La page « Configurations »
+  est désormais pensée pour le tactile (≤ 768 px) : modale **plein écran**
+  (`100dvh`, safe-area), sommaire en **drawer coulissant** gauche
+  (`position: fixed`, largeur `min(320px, 88vw)`) avec fond assombri
+  (`#config-modal.config-toc-open::before`) et bouton de fermeture
+  `#config-toc-close` (tap sur le backdrop ou Échap ferme le drawer d'abord,
+  puis la modale) ; formulaires sur **une colonne** ; tous les boutons
+  (save/secondary/danger/add/sm/hamburger/fermer) et liens du sommaire en cibles
+  **≥ 44 px** ; champs et selects en **16 px + min-height 44 px** (anti-zoom
+  iOS) ; rangée « Sauvegarder / Réindexer / Réinitialiser » **sticky** en bas de
+  sa section avec safe-area ; MFA (codes de secours en 1 colonne, champ de code
+  full-width et wrap des rangées d'action) ; débordements webhook/token/share
+  corrigés. Dettes HTML/i18n de l'audit incluses : `.config-actions-row` replacée
+  dans `#cfg-backend-settings` (+ `</section>` orphelin supprimé), id dupliqué
+  `cfg-partages-publics` retiré du `<h2>`, conteneur mort
+  `#plugins-settings-container` supprimé, libellé `#mt-explorer` i18n
+  (`settings.explorer`), doublons `.config-btn-add` et règle morte
+  `.mfa-recovery-input` purgés ; i18n : clés mortes `settings.backend`,
+  `settings.backend_hint`, `settings.restart_badge`, `settings.save`,
+  `settings.plugins` supprimées, `config.toc_close` ajoutée, `settings.tabs` FR
+  corrigé (« Onglets »). Tests : `config-mobile.test.mjs` étendu (27, au CI) +
+  E2E `config-mobile.spec.js` (5, projet `chromium-mobile`). Fiche :
+  [docs/features/settings-mobile-114.md](./docs/features/settings-mobile-114.md).
+
+---
+
+## [2.22.1] — 2026-09-23
+
+### Corrigé
+
+- **BUG-073 — mobile, fin de contenu masquée.** La barre de navigation fixe du bas
+  (`#mobile-toolbar`, 64 px + safe-area) recouvrait le bas de tous les documents et
+  pages en vue mobile (≤ 768 px) : les dernières lignes restaient définitivement sous
+  la barre. Cause : la règle de clearance du bloc mobile ciblait `.main-layout`,
+  classe absente de `index.html` (le vrai conteneur est `.main-body`) — sélecteur
+  mort, aucun dégagement réservé. Correctif : cible `.main-body`
+  (`padding-bottom: calc(64px + env(safe-area-inset-bottom, 0))`), suppression de la
+  règle sœur morte `.editor-modal.active ~ .main-layout`, reset du dégagement en mode
+  lecture (barre masquée) et `body.np-active .content-area` ramené à `76 px` (le
+  dégagement dock, sans double comptage avec `.main-body`). Tests :
+  `tests/frontend/mobile-toolbar.test.mjs` (7, au CI) et E2E
+  `tests/e2e/mobile-toolbar.spec.js` (2, projet `chromium-mobile`).
+
+---
+
+## [2.22.0] — 2026-09-23
+
+### Ajouté
+
+- **#113 — avatar utilisateur.** La section « Profil » des Configurations permet de
+  **choisir / importer une image** (PNG, JPG, WEBP, 8 Mo max) : elle est recadrée en
+  carré 256 px côté client, validée côté serveur (data-URL + octets magiques, sans SVG)
+  et persistée sur le compte (`avatar` dans `data/users.json`, exposé par
+  `GET/PATCH /api/auth/me` et la réponse de login). L'image s'affiche dans le **cercle
+  du profil en bas de la sidebar** (initiales en repli) et peut être supprimée. UI :
+  aperçu circulaire avec overlay caméra au survol, boutons Choisir / Supprimer, erreurs
+  en ligne. Clés i18n FR/EN.
+
+### Modifié
+
+- **#113 — ordre des sections Configurations.** La TOC et la page sont réorganisées
+  dans un ordre naturel et **parfaitement synchronisées** : **Profil en premier**,
+  puis Sécurité, Thèmes, Recherche, Historique récent, Tags, Fichiers cachés,
+  Synchronisation, Backend, Diagnostics, IA, Sources connectées, Clés API & MCP,
+  Push, Webhooks, Partages publics, Plugins et **À propos en dernier**. Les ancres
+  `cfg-tags` et `cfg-partages-publics` sont désormais portées par leur `<section>`
+  (cible de défilement = haut de section). Garde-fous : test statique
+  `tests/frontend/settings-order-avatar.test.mjs` (ordre TOC = page, pas d'ancre morte).
+
+---
+
+## [2.21.0] — 2026-09-23
+
+### Ajouté
+
+- **#112 — section compte en bas de la sidebar.** L'identité (avatar avec
+  initiales, nom, rôle) et la **déconnexion** sont regroupées dans un bloc
+  épinglé au bas de la barre latérale, comme sur les sites professionnels ; un
+  clic sur l'identité ouvre le Profil. Nouvelle clef i18n FR/EN pour le rôle.
+- **#112 — pellicule d'images défilable.** La molette de la souris fait défiler
+  horizontalement la bande de miniatures et deux **flèches translucides** sur les
+  côtés (révélées au survol) remplissent la même fonction.
+
+### Modifié
+
+- **#112 — en-tête allégé.** La **version** quitte le header pour le menu
+  **Options** (ligne « Version ») ; le **bouton de déconnexion** et le **nom de
+  l'utilisateur** sont retirés du header au profit de la section compte de la
+  sidebar. Le header droit ne conserve que l'indicateur hors-ligne, le contexte
+  vault et le bouton Options.
+
+---
+
+## [2.20.0] — 2026-09-23
+
+### Ajouté
+
+- **#111 — visionneuse d'images : flèches latérales translucides.** Deux boutons
+  superposés le long des bords du cadre passent à l'image précédente/suivante ;
+  quasi invisibles au repos, ils se révèlent au survol (et restent visibles sur
+  les appareils tactiles). Un compteur `n / total` complète la barre d'outils.
+
+### Modifié
+
+- **#111 — navigation d'images fluide.** Changer d'image se fait désormais **en
+  place** (`showSibling` remplace le `src` du `<img>`) : plus de rechargement de
+  la vue ni de nouvel appel `/api/browse` à chaque flèche, **même dans un dossier
+  contenant beaucoup d'images**. La liste du dossier est mise en cache (TTL court)
+  et les images voisines sont préchargées ; la **pellicule de miniatures reste
+  visible** et la vignette active est simplement re-marquée.
+- **#111 — image toujours ajustée au cadre.** La visionneuse occupe tout l'espace
+  disponible (zone de contenu en flex, sans défilement de page) et l'image est
+  systématiquement redimensionnée dans son cadre, y compris panneau
+  « Métadonnées » ouvert.
+
+---
+
+## [2.19.2] — 2026-09-23
+
+### Ajouté
+
+- **Lanceur E2E Windows/PowerShell** : `scripts/run-e2e-local.ps1` (+ script npm
+  `test:e2e:ps`) reproduit localement le job CI `e2e` (uvicorn natif, auth
+  désactivée, fixtures TestVault/TestDir, port 2029, projet `chromium-desktop`)
+  sans dépendre de `bash` — indispensable sur les postes Windows où WSL ne
+  démarre pas et où git-bash est bloqué par une politique de contrôle
+  d'application. Le script `bash` reste la référence pour la CI/Linux.
+
+### Corrigé
+
+- **BUG-072 — visionneuse d'images** : le plein écran (lightbox) et le panneau
+  « Métadonnées » sont désormais **conservés lors de la navigation** entre images
+  (flèches ←/→ et clic sur la pellicule) ; auparavant chaque changement d'image
+  recréait la visionneuse et perdait ces états. Le panneau de métadonnées s'affiche
+  maintenant en **barre latérale à droite de l'image** (au lieu d'une bande sous la
+  pellicule) et reste visible en plein écran.
+
+---
+
+## [2.19.1] — 2026-09-23
+
+### Corrigé
+
+- **#110 — lisibilité et positionnement du lecteur média** : en mode mobile, la
+  barre audio passe en grille (barre de progression pleine largeur sur sa propre
+  ligne) et les actions secondaires (précédent/suivant/agrandir/volume) sont
+  masquées pour éviter tout chevauchement ; le volume est aussi masqué sur les
+  écrans intermédiaires en desktop, et `overflow: hidden` empêche le débordement
+  hors de la pilule. La mini-fenêtre vidéo n'est plus ré-aimantée sur les bords :
+  elle se déplace et se redimensionne **librement** (position absolue mémorisée,
+  centre autorisé), le glisser fonctionnant désormais depuis n'importe quel point
+  de la fenêtre (boutons/curseurs/poignée exclus, seuil de 4 px pour préserver
+  les contrôles natifs de la vidéo).
+
+---
+
+## [2.19.0] — 2026-09-23
+
+### Ajouté
+
+- **#110 — Lecteur média persistant « Now Playing »** : les fichiers audio et
+  vidéo continuent de jouer pendant la navigation grâce à un contrôleur global
+  `frontend/js/now-playing.js` qui possède **un seul** élément `<audio>`/`<video>`
+  téléporté entre la vue inline (onglet/panneau) et un dock flottant
+  (`<body>`), sans interruption de lecture. Dock desktop : pilule verre dépoli
+  (artwork, titre, voûte, play/pause, précédent/suivant, barre de progression,
+  volume, retour au média, agrandir, fermer). Mini-fenêtre vidéo flottante
+  déplaçable/redimensionnable avec aimantation aux coins et bouton
+  Picture-in-Picture natif. Mode mobile : mini-player fixé au-dessus de la barre
+  d'outils (safe-area `viewport-fit=cover`). Intégration **Media Session** (écran
+  verrouillé, touches matérielles, Windows SMTC), panneau étendu façon « Now
+  Playing », lecture auto du média suivant/précédent du dossier, reprise après
+  rechargement, notification quand l'onglet est fermé pendant la lecture. Fiche :
+  [docs/features/media-viewers-109.md](docs/features/media-viewers-109.md) (§ Now
+  Playing, #110).
+
+---
+
+## [2.18.0] — 2026-09-23
+
+### Ajouté
+
+- **#109 — Support audio & vidéo (lecteurs HTML5 intégrés)** : les fichiers audio
+  (`.mp3 .m4a .aac .wav .ogg .oga .opus .flac`) et vidéo (`.mp4 .webm .mov .m4v`)
+  apparaissent désormais dans l'arborescence et l'index (nom/taille/date
+  uniquement, contenu jamais lu, intégrés à `SUPPORTED_EXTENSIONS` via
+  `media_types.py`). Nouvel endpoint `GET /api/media/{vault}?path=…` avec support
+  HTTP `Range` / `206 Partial Content` (`Content-Range`, `Accept-Ranges`, `416`
+  sur plage invalide, `413` au-delà de `OBSIGATE_MEDIA_MAX_INLINE_MB`, défaut
+  500 Mo) — le helper Range de `pdf/stream` a été extrait en
+  `_stream_file_with_range()` et est partagé. `api_file_view()` expose
+  `is_audio`/`is_video`/`stream_url`/`media_mime` avant toute lecture texte.
+  Frontend : lecteur audio dédié (artwork, durée via `loadedmetadata`) et lecteur
+  vidéo (`playsinline`, scène noire letterboxée), icônes Lucide `audio-lines` /
+  `video`, pause à la réinitialisation de la vue, repli téléchargement si le codec
+  n'est pas lisible ou le fichier trop volumineux. Les médias sont exclus du
+  contexte textuel BooksLM et du cache hors-ligne du service worker. Fiche :
+  [docs/features/media-viewers-109.md](docs/features/media-viewers-109.md).
+
+---
+
+## [2.17.0] — 2026-09-23
+
+### Ajouté
+
+- **#108 — Support complet des images (arborescence, visionneuse, indexation)** :
+  les images (`.png .jpg .jpeg .gif .svg .webp .bmp .ico`) apparaissent désormais
+  dans l'arborescence et l'index comme les autres fichiers — nom/taille/date
+  uniquement, jamais les octets (contenu indexé vide, TF-IDF préservé). Nouveau
+  module partagé `backend/media_types.py` (extensions + MIME, socle réutilisé par
+  #109). Visionneuse dédiée : zoom molette 0,1×–8×, pan au glisser, double-clic
+  pour réinitialiser, boutons +/−/reset et badge de zoom, navigation ←/→ entre
+  les images du dossier avec pellicule de miniatures, panneau métadonnées
+  (dimensions, taille, type, chemin, date), lightbox plein écran, « Ouvrir
+  l'original » et téléchargement. Endpoint `GET /api/media/{vault}/thumb`
+  (miniature WebP 256 px, cache disque invalidé par mtime, repli sur l'original
+  pour le SVG, `pillow>=10.0`). Filtre `ext:png`/`ext:jpg` opérationnel ;
+  compteurs d'images séparés dans `/api/dashboard` (`image_count`/`total_images`).
+  Fiche : [docs/features/image-support.md](docs/features/image-support.md).
+
+### Corrigé
+
+- **#108-B1 — Affichage isolé d'une image** : le `<img>` généré par
+  `api_file_view()` pointait vers `/api/file/{vault}/raw` (qui renvoie du JSON)
+  au lieu de `/api/image/{vault}` (octets + MIME correct). Corrigé côté backend
+  et dans `viewer.js` (bouton Plein écran), avec encodage d'URL des chemins.
+- **#108-B3 — XSS via SVG** : `/api/image` (et le repli miniatures) pose
+  `Content-Security-Policy: sandbox` sur les SVG ouverts directement, pour
+  empêcher l'exécution du JavaScript embarqué ; le middleware n'écrase plus une
+  politique stricte posée par une route.
+
+---
+
 ## [2.16.6] — 2026-09-22

 ### Ajouté
@@ -4,7 +4,7 @@

 **Porte d'entrée web ultra-léger pour vos vaults Obsidian** — Accédez, naviguez et recherchez dans toutes vos notes Obsidian depuis n'importe quel appareil via une interface web moderne et responsive.

-[![Version](https://img.shields.io/badge/Version-2.16.6-blue.svg)]()
+[![Version](https://img.shields.io/badge/Version-2.28.4-blue.svg)]()
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![Docker](https://img.shields.io/badge/Docker-Ready-blue.svg)](https://www.docker.com/)
 [![Python](https://img.shields.io/badge/Python-3.11+-green.svg)](https://www.python.org/)
@@ -83,7 +83,9 @@ Les **guides d'utilisation** pas à pas se trouvent dans [`docs/GUIDES/`](docs/G
 - **🏷️ Tag cloud** : Filtrage par tags extraits des frontmatters YAML
 - **🔗 Wikilinks** : Les `[[liens internes]]` Obsidian sont cliquables
 - **🖼️ Images Obsidian** : Support complet des syntaxes d'images Obsidian avec résolution intelligente
+- **🎬 Audio & vidéo** : Lecteurs HTML5 intégrés (`.mp3 .wav .flac .mp4 .webm`…) avec streaming HTTP Range (lecture, déplacement, plein écran) et **lecture persistante** (mini-lecteur flottant / mini-fenêtre vidéo, retour au média ou arrêt à tout moment, contrôles écran verrouillé via Media Session), repli téléchargement si le format n'est pas lisible par le navigateur
 - **🎨 Diagrammes Excalidraw** : Visualiseur/éditeur natif des fichiers `.excalidraw` et `.excalidraw.md` (iframe sandboxée, auto-save, thème clair/sombre, texte des diagrammes indexé pour la recherche)
+- **📊 Tableurs Excel** : les fichiers `.xlsx` s'ouvrent dans un visualiseur dédié — un tableau par feuille avec onglets, en-têtes A1 et édition directe des cellules (`PUT /api/file/{vault}/xlsx/save`, backup automatique), plus le téléchargement du fichier d'origine
 - **🎨 Syntax highlight** : Coloration syntaxique des blocs de code
 - **🌓 Thème clair/sombre** : Toggle persisté en localStorage
 - **📡 Synchronisation temps réel** : Surveillance automatique des fichiers via watchdog avec mise à jour incrémentale de l'index
@@ -296,6 +298,7 @@ Un compte **admin** connecté voit une icône 🛡️ dans le header : liste, cr
 | `OBSIGATE_WEBHOOK_ALLOW_HTTP` | Autoriser les webhooks non HTTPS | `false` |
 | `OBSIGATE_WEBHOOK_ALLOW_PRIVATE` | Autoriser les webhooks vers des adresses privées/boucle | `false` |
 | `OBSIGATE_PDF_MAX_SIZE_MB` | Taille max des PDF extraits (text indexation) | `50` |
+| `OBSIGATE_MEDIA_MAX_INLINE_MB` | Taille max pour la lecture audio/vidéo intégrée (au-delà : téléchargement) | `500` |
 | `OBSIGATE_PDF_EXTRACT_TIMEOUT` | Timeout extraction PDF (secondes) | `30` |
 | `OBSIGATE_TAVILY_API_KEY` / `OBSIGATE_BRAVE_API_KEY` / `OBSIGATE_SERPAPI_API_KEY` / `OBSIGATE_EXA_API_KEY` | Fournisseurs de recherche web à clé (essayés avant SearXNG) | — |
 | `OBSIGATE_WEB_PROVIDERS` | Ordre des fournisseurs de recherche (ex. `brave,searxng`) | — |
@@ -406,6 +409,18 @@ ObsiGate supporte **toutes les syntaxes d'images Obsidian** avec résolution int
 6. Index de démarrage (match le plus proche)
 7. Fallback : placeholder stylisé `[image not found: filename.ext]`

+### Visionneuse & arborescence
+
+Les images sont de plein droit des fichiers du vault : elles apparaissent dans
+l'arborescence, sont indexées (nom + métadonnées, **jamais les octets**) et
+s'ouvrent dans une **visionneuse dédiée** — zoom molette 0,1×–8×, pan au
+glisser, double-clic pour réinitialiser, navigation ←/→ entre les images du
+dossier (avec pellicule de miniatures WebP), panneau de métadonnées, lightbox
+plein écran, ouverture de l'original et téléchargement. Le filtre de recherche
+`ext:png`/`ext:jpg` est disponible. Formats décodables : PNG, JPEG, GIF, WebP,
+BMP, ICO, SVG (SVG servi avec une politique CSP `sandbox`). **HEIC/HEIF**
+(iPhone) n'est pas décodable par les navigateurs et n'est pas pris en charge.
+
 ### Configuration

 ```yaml
@@ -637,6 +652,7 @@ ObsiGate expose une API REST complète :
 | `/api/events` | Flux SSE temps réel | GET | Oui |
 | `/api/vaults/add` / `/api/vaults/{name}` | Gestion dynamique des vaults | POST/DELETE | Admin |
 | `/api/image/{vault}?path=` | Servir une image | GET | Oui |
+| `/api/media/{vault}/thumb?path=&size=` | Miniature WebP (cache disque) | GET | Oui |
 | `/api/config` | Lire / écrire la configuration | GET/POST | Oui/Admin |
 | `/api/diagnostics` | Statistiques index et mémoire | GET | Admin |

@@ -857,7 +873,7 @@ Configurables via l'interface (Settings) ou l'API `/api/config`.
 | Validation des imports frontend | `node tests/frontend/validate-imports.mjs` | `lint` |
 | Tests unitaires frontend | `node tests/frontend/unit.test.mjs` | `lint` |
 | Tests backend | `pytest tests/ -q` | `test` |
-| **E2E Playwright** | `npm run test:e2e` (~5 min) | `e2e` |
+| **E2E Playwright** | `npm run test:e2e` (~10 min) | `e2e` |

 #### Tests E2E locaux (`npm run test:e2e`)

@@ -880,6 +896,15 @@ bash scripts/run-e2e-local.sh --headed            # navigateur visible
 bash scripts/run-e2e-local.sh -g "reset panes"    # filtre sur un test
 ```

+Sous Windows, si `bash` n'est pas exploitable (WSL indisponible, git-bash
+bloqué par une politique de contrôle d'application), utiliser le lanceur
+PowerShell équivalent :
+
+```powershell
+npm run test:e2e:ps
+pwsh -File scripts/run-e2e-local.ps1 -PlaywrightArgs @('-g','reset panes')
+```
+
 La suite doit se terminer sur **tous les tests passant** (60 actuellement),
 sans échec ni dépendance aux retries. En cas d'échec : corriger et relancer
 localement jusqu'à 100 %, puis seulement commiter.
@@ -951,8 +976,8 @@ Ce projet est sous licence **MIT** — voir le fichier [LICENSE](LICENSE) pour l

 ## 📝 Changelog

-Consultez le [CHANGELOG.md](./CHANGELOG.md) pour l'historique complet de toutes les versions (v1.0.0 → v2.16.6).
+Consultez le [CHANGELOG.md](./CHANGELOG.md) pour l'historique complet de toutes les versions (v1.0.0 → v2.28.4).

 ---

-*Projet : ObsiGate | Version : 2.16.6 | Dernière mise à jour : Septembre 2026*
+*Projet : ObsiGate | Version : 2.28.4 | Dernière mise à jour : Septembre 2026*
@@ -2,7 +2,7 @@

 **Ultra-light web gateway for your Obsidian vaults** — Access, browse, and search all your Obsidian notes from any device via a modern, responsive web interface.

-[![Version](https://img.shields.io/badge/Version-2.16.6-blue.svg)]()
+[![Version](https://img.shields.io/badge/Version-2.28.4-blue.svg)]()
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![Docker](https://img.shields.io/badge/Docker-Ready-blue.svg)](https://www.docker.com/)
 [![Python](https://img.shields.io/badge/Python-3.11+-green.svg)](https://www.python.org/)
@@ -82,7 +82,9 @@ Step-by-step **user guides** live in [`docs/GUIDES/`](docs/GUIDES/):
 - **🏷️ Tag Cloud** : Filtering by tags extracted from YAML frontmatters
 - **🔗 Wikilinks** : `[[internal links]]` from Obsidian are clickable
 - **🖼️ Obsidian Images** : Full support for all Obsidian image syntaxes with intelligent resolution
+- **🎬 Audio & video** : Built-in HTML5 players (`.mp3 .wav .flac .mp4 .webm`…) with HTTP Range streaming (play, seek, fullscreen) and **persistent playback** (floating mini-player / mini video window, return to media or stop anytime, lock-screen controls via Media Session), falling back to download when the format is not playable in the browser
 - **🎨 Excalidraw Diagrams** : Native viewer/editor for `.excalidraw` and `.excalidraw.md` files (sandboxed iframe, autosave, dark/light theme, diagram text indexed for search)
+- **📊 Excel Spreadsheets** : `.xlsx` files open in a dedicated viewer — one table per sheet with tabs, A1 headers and inline cell editing (`PUT /api/file/{vault}/xlsx/save`, automatic backup), plus download of the original file
 - **🎨 Syntax Highlight** : Syntax highlighting for code blocks
 - **🌓 Light/Dark Theme** : Toggle persisted in localStorage
 - **📡 Real-time Sync** : Automatic file monitoring via watchdog with incremental index updates
@@ -340,6 +342,7 @@ When an **admin** account is logged in, a 🛡️ icon appears in the header. Cl
 | `OBSIGATE_WEBHOOK_ALLOW_HTTP` | Allow non-HTTPS webhook targets | `false` |
 | `OBSIGATE_WEBHOOK_ALLOW_PRIVATE` | Allow webhooks to private/loopback addresses | `false` |
 | `OBSIGATE_PDF_MAX_SIZE_MB` | Max PDF size for text extraction | `50` |
+| `OBSIGATE_MEDIA_MAX_INLINE_MB` | Max size for inline audio/video playback (above: download) | `500` |
 | `OBSIGATE_PDF_EXTRACT_TIMEOUT` | PDF extraction timeout (seconds) | `30` |
 | `OBSIGATE_TAVILY_API_KEY` / `OBSIGATE_BRAVE_API_KEY` / `OBSIGATE_SERPAPI_API_KEY` / `OBSIGATE_EXA_API_KEY` | Keyed web-search providers (tried before SearXNG) | — |
 | `OBSIGATE_WEB_PROVIDERS` | Search provider order (e.g. `brave,searxng`) | — |
@@ -516,6 +519,17 @@ ObsiGate uses 7 resolution strategies in order of priority:
 6. **Startup index (closest match)** : If multiple files have the same name
 7. **Fallback** : Display a styled placeholder `[image not found: filename.ext]`

+### Viewer & file tree
+
+Images are first-class vault files: they appear in the tree, are indexed (name +
+metadata, **never the bytes**) and open in a **dedicated viewer** — wheel zoom
+0.1×–8×, drag pan, double-click to reset, ←/→ navigation between images in the
+same folder (WebP thumbnail filmstrip), metadata panel, full-screen lightbox,
+open original and download. The `ext:png`/`ext:jpg` search filter is available.
+Decodable formats: PNG, JPEG, GIF, WebP, BMP, ICO, SVG (SVG served with a
+`sandbox` CSP). **HEIC/HEIF** (iPhone) is not decodable by browsers and is not
+supported.
+
 ### Configuration

 To optimize resolution, configure the attachments folder for each vault:
@@ -756,6 +770,7 @@ ObsiGate exposes a complete REST API :
 | `/api/events` | Real-time SSE stream | GET | Yes |
 | `/api/vaults/add` / `/api/vaults/{name}` | Dynamic vault management | POST/DELETE | Admin |
 | `/api/image/{vault}?path=` | Serve an image | GET | Yes |
+| `/api/media/{vault}/thumb?path=&size=` | WebP thumbnail (disk cache) | GET | Yes |
 | `/api/config` | Read / write configuration | GET/POST | Yes/Admin |
 | `/api/diagnostics` | Index and memory statistics | GET | Admin |

@@ -1028,7 +1043,7 @@ These parameters are configurable via the interface (Settings) or the `/api/conf
 | Frontend import validation | `node tests/frontend/validate-imports.mjs` | `lint` |
 | Frontend unit tests | `node tests/frontend/unit.test.mjs` | `lint` |
 | Backend tests | `pytest tests/ -q` | `test` |
-| **E2E Playwright** | `npm run test:e2e` (~5 min) | `e2e` |
+| **E2E Playwright** | `npm run test:e2e` (~10 min) | `e2e` |

 #### Local E2E Tests (`npm run test:e2e`)

@@ -1051,6 +1066,14 @@ bash scripts/run-e2e-local.sh --headed            # visible browser
 bash scripts/run-e2e-local.sh -g "reset panes"    # filter on a test
 ```

+On Windows, when `bash` is unusable (WSL unavailable, git-bash blocked by an
+Application Control policy), use the equivalent PowerShell launcher:
+
+```powershell
+npm run test:e2e:ps
+pwsh -File scripts/run-e2e-local.ps1 -PlaywrightArgs @('-g','reset panes')
+```
+
 The suite must end with **all tests passing** (60 currently), with no failure
 or reliance on retries. In case of failure: fix and re-run locally until 100 %,
 then only commit.
@@ -1128,8 +1151,8 @@ This project is licensed under the **MIT License** - see the [LICENSE](LICENSE)

 ## 📝 Changelog

-See [CHANGELOG.md](./CHANGELOG.md) for the complete version history (v1.0.0 → v2.16.6).
+See [CHANGELOG.md](./CHANGELOG.md) for the complete version history (v1.0.0 → v2.28.4).

 ---

-*Project: ObsiGate | Version: 2.16.6 | Last updated: September 2026*
+*Project: ObsiGate | Version: 2.28.4 | Last updated: September 2026*
@@ -1 +1 @@
-2.16.6
+2.28.4
@@ -28,6 +28,7 @@ from backend.tools.api import (
    ToolError,
    ToolScope,
    call_tool,
+    get_tool,
    get_tool_schemas,
 )
 from backend.tools.labels import thought_step_label, tool_step_label
@@ -121,12 +122,15 @@ def _assistant_tool_message(content: str | None, tool_calls: list[Any]) -> dict[
 def _deferred_tool_message(call: Any, reason: str | None = None) -> dict[str, Any]:
    """Answer a tool call that was not reached because the run stopped early.

-    A single LLM response may carry several tool calls. When one of them is
-    mutating and pauses the run for confirmation, the assistant message already
-    lists *all* of them, so every ``tool_call_id`` must get a tool result before
-    the next LLM call (the OpenAI tool protocol rejects dangling ids). The calls
-    that were not reached get a synthetic ``deferred`` result; the model
-    re-issues them once the confirmed call has been applied (BUG-050).
+    A single LLM response may carry several tool calls; when the run stops
+    before reaching some of them (tool-call quota), the assistant message still
+    lists *all* of them, so every ``tool_call_id`` must get a tool result
+    before the next LLM call (the OpenAI tool protocol rejects dangling ids).
+    The calls that were not reached get a synthetic ``deferred`` result.
+
+    Note: mutating calls that pause the run for confirmation are no longer
+    deferred — they are batched and applied together on resume (BUG-075); this
+    helper remains for budget stops (BUG-050/BUG-052).
    """
    return {
        "role": "tool",
@@ -135,13 +139,29 @@ def _deferred_tool_message(call: Any, reason: str | None = None) -> dict[str, An
        "content": json.dumps({
            "status": "deferred",
            "reason": reason or (
-                "Not executed: the run paused to confirm an earlier tool call. "
+                "Not executed: the run stopped before reaching this tool call. "
                "Re-issue this call if it is still needed."
            ),
        }, ensure_ascii=False),
    }


+def _action_descriptor(call: Any) -> dict[str, Any]:
+    """Describe one paused mutating tool call for the confirmation payload.
+
+    A single LLM response may request several mutations (create a folder and
+    the files inside it…). They are batched into one confirmation so the user
+    approves the whole plan in one click (BUG-075). ``step`` reuses the
+    Notion-style label, so the confirmation card reads like the steps block.
+    """
+    return {
+        "id": call.id,
+        "tool": call.name,
+        "arguments": call.arguments,
+        "step": tool_step_label(call.name, call.arguments),
+    }
+
+
 def _fallback_summary(executed: list[ToolCallRecord]) -> str:
    """Deterministic non-empty answer built from the gathered tool results.

@@ -212,53 +232,66 @@ def _execute_confirmed(
    executed: list[ToolCallRecord],
    on_tool_call: Callable[[ToolCallRecord], None] | None,
 ) -> None:
-    """Apply a previously-paused mutating tool call and feed its result back.
+    """Apply previously-paused mutating tool calls and feed their results back.

    The pending payload is the ``error`` object emitted by a ``confirmation``
-    event. The assistant tool-call message is expected to already be in
+    event, optionally carrying an ``actions`` list with every mutating call of
+    the LLM turn (BUG-075). Each action is applied with a one-shot confirmation
+    and its ``tool_call_id`` answered, keeping the conversation valid for the
+    resumed turn. The assistant tool-call message is expected to already be in
    ``convo`` (it is part of the snapshot returned with the confirmation).
    """
    from backend.ai_chat import ToolCall

-    error = confirm_pending.get("error", confirm_pending)
-    name = error.get("tool")
-    arguments = error.get("arguments") or {}
-    call_id = error.get("id") or "call_pending"
+    error = confirm_pending.get("error", confirm_pending) or {}
+    actions = confirm_pending.get("actions")
+    if not isinstance(actions, list) or not actions:
+        # Legacy single-action payload (no ``actions`` list).
+        actions = [{
+            "id": error.get("id") or "call_pending",
+            "tool": error.get("tool"),
+            "arguments": error.get("arguments") or {},
+        }]

-    if not name:
-        raise ToolError("Malformed confirmation payload", code="invalid_confirmation")
+    for action in actions:
+        name = action.get("tool")
+        arguments = action.get("arguments") or {}
+        call_id = action.get("id") or "call_pending"

-    # Make sure the assistant tool-call message is present in the snapshot.
-    if not any(
-        m.get("role") == "assistant" and any(
-            tc.get("id") == call_id for tc in (m.get("tool_calls") or [])
+        if not name:
+            raise ToolError("Malformed confirmation payload", code="invalid_confirmation")
+
+        # Make sure the assistant tool-call message is present in the snapshot.
+        if not any(
+            m.get("role") == "assistant" and any(
+                tc.get("id") == call_id for tc in (m.get("tool_calls") or [])
+            )
+            for m in convo
+        ):
+            convo.append(_assistant_tool_message(None, [ToolCall(id=call_id, name=name, arguments=arguments)]))
+
+        try:
+            result = call_tool(name, ctx, arguments, confirm=True)
+            payload = result.data
+            ok = True
+        except ToolError as e:
+            payload = e.to_dict()
+            ok = False
+
+        record = ToolCallRecord(
+            name=name, arguments=arguments, ok=ok, result=payload,
+            step=tool_step_label(name, arguments),
        )
-        for m in convo
-    ):
-        convo.append(_assistant_tool_message(None, [ToolCall(id=call_id, name=name, arguments=arguments)]))
+        executed.append(record)
+        if on_tool_call is not None:
+            on_tool_call(record)

-    try:
-        result = call_tool(name, ctx, arguments, confirm=True)
-        payload = result.data
-        ok = True
-    except ToolError as e:
-        payload = e.to_dict()
-        ok = False
-
-    record = ToolCallRecord(
-        name=name, arguments=arguments, ok=ok, result=payload,
-        step=tool_step_label(name, arguments),
-    )
-    executed.append(record)
-    if on_tool_call is not None:
-        on_tool_call(record)
-
-    convo.append({
-        "role": "tool",
-        "tool_call_id": call_id,
-        "name": name,
-        "content": json.dumps(_truncate(payload), ensure_ascii=False, default=str),
-    })
+        convo.append({
+            "role": "tool",
+            "tool_call_id": call_id,
+            "name": name,
+            "content": json.dumps(_truncate(payload), ensure_ascii=False, default=str),
+        })


 async def run_agent(
@@ -315,6 +348,36 @@ async def run_agent(
    convo = [dict(m) for m in (resume_messages if resume_messages is not None else messages)]
    executed: list[ToolCallRecord] = []

+    def _run_call(call: Any) -> None:
+        """Execute one tool call, record it and answer its ``tool_call_id``.
+
+        ``ToolConfirmationRequired`` propagates to the caller so the loop can
+        pause and batch the mutating calls of the turn (BUG-075).
+        """
+        try:
+            result = call_tool(call.name, ctx, call.arguments)
+            payload: Any = result.data
+            ok = True
+        except ToolConfirmationRequired:
+            raise
+        except ToolError as e:
+            payload = e.to_dict()
+            ok = False
+        record = ToolCallRecord(
+            name=call.name, arguments=call.arguments, ok=ok, result=payload,
+            step=tool_step_label(call.name, call.arguments),
+        )
+        executed.append(record)
+        steps.append(record.step)
+        if on_tool_call is not None:
+            on_tool_call(record)
+        convo.append({
+            "role": "tool",
+            "tool_call_id": call.id,
+            "name": call.name,
+            "content": json.dumps(_truncate(payload), ensure_ascii=False, default=str),
+        })
+
    if confirm_pending:
        if quota is not None and len(executed) >= quota:
            return AgentResult(
@@ -357,19 +420,25 @@ async def run_agent(
                    llm, convo, executed, steps, iteration, STOP_QUOTA_EXCEEDED
                )
            try:
-                result = call_tool(call.name, ctx, call.arguments)
-                payload = result.data
-                ok = True
+                _run_call(call)
            except ToolConfirmationRequired as e:
                logger.info(f"Agent paused: confirmation required for '{call.name}'")
                pending = e.to_dict()
                # Include the tool-call id so the client can echo it back.
                pending["error"]["id"] = call.id
-                # BUG-050: the assistant message lists every tool call of this
-                # batch, so answer the ones we did not reach to keep the
-                # conversation valid for the resumed turn.
-                for skipped in response.tool_calls[index + 1:]:
-                    convo.append(_deferred_tool_message(skipped))
+                # BUG-075: batch every mutating call of this LLM turn so the
+                # user approves the whole plan at once (one resume applies them
+                # all) instead of approving one action after another. Read-only
+                # calls of the batch run immediately and answer their
+                # ``tool_call_id`` so the resumed turn stays valid.
+                actions = [_action_descriptor(call)]
+                for after in response.tool_calls[index + 1:]:
+                    spec = get_tool(after.name)
+                    if spec is not None and spec.requires_confirmation:
+                        actions.append(_action_descriptor(after))
+                    else:
+                        _run_call(after)
+                pending["actions"] = actions
                return AgentResult(
                    content=response.content or "",
                    messages=convo,
@@ -379,25 +448,6 @@ async def run_agent(
                    stopped=STOP_CONFIRMATION_REQUIRED,
                    pending=pending,
                )
-            except ToolError as e:
-                payload = e.to_dict()
-                ok = False
-
-            record = ToolCallRecord(
-                name=call.name, arguments=call.arguments, ok=ok, result=payload,
-                step=tool_step_label(call.name, call.arguments),
-            )
-            executed.append(record)
-            steps.append(record.step)
-            if on_tool_call is not None:
-                on_tool_call(record)
-
-            convo.append({
-                "role": "tool",
-                "tool_call_id": call.id,
-                "name": call.name,
-                "content": json.dumps(_truncate(payload), ensure_ascii=False, default=str),
-            })

    logger.warning(f"Agent reached max iterations ({max_iterations})")
    return await _finalize_answer(
@@ -4,10 +4,9 @@ import threading
 from pathlib import Path
 from typing import Any

-logger = logging.getLogger("obsigate.attachment_indexer")
+from backend.media_types import IMAGE_EXTENSIONS

-# Image file extensions to index
-IMAGE_EXTENSIONS = {".png", ".jpg", ".jpeg", ".gif", ".svg", ".webp", ".bmp", ".ico"}
+logger = logging.getLogger("obsigate.attachment_indexer")

 # Global attachment index: {vault_name: {filename_lower: [absolute_path, ...]}}
 attachment_index: dict[str, dict[str, list[Path]]] = {}
@@ -119,25 +119,30 @@ def decode_token(token: str) -> dict | None:
 _revoked_map: dict[str, int] = {}
 _revoked_loaded = False

+# ROADMAP #85 T10a — verrou autour du read-modify-write du store de
+# révocation (perte de révocations en cas de logouts concurrents).
+_revoked_lock = threading.RLock()
+

 def _load_revoked():
    """Load revoked token JTIs from disk into memory (once)."""
    global _revoked_loaded, _revoked_map
-    if _revoked_loaded:
-        return
-    if REVOKED_TOKENS_FILE.exists():
-        try:
-            data = json.loads(REVOKED_TOKENS_FILE.read_text())
-            # Drop entries whose underlying token has itself expired.
-            now = int(time.time())
-            _revoked_map = {
-                jti: int(exp) for jti, exp in data.items()
-                if int(exp) > now
-            }
-        except Exception as e:
-            logger.warning(f"Failed to load revoked tokens: {e}")
-            _revoked_map = {}
-    _revoked_loaded = True
+    with _revoked_lock:
+        if _revoked_loaded:
+            return
+        if REVOKED_TOKENS_FILE.exists():
+            try:
+                data = json.loads(REVOKED_TOKENS_FILE.read_text())
+                # Drop entries whose underlying token has itself expired.
+                now = int(time.time())
+                _revoked_map = {
+                    jti: int(exp) for jti, exp in data.items()
+                    if int(exp) > now
+                }
+            except Exception as e:
+                logger.warning(f"Failed to load revoked tokens: {e}")
+                _revoked_map = {}
+        _revoked_loaded = True


 def _save_revoked():
@@ -154,24 +159,26 @@ def revoke_token(jti: str, expires_at: int | None = None):
    ``expires_at`` is the revoked token's own ``exp`` (unix seconds) — the
    record is kept at least that long so a long-lived API token cannot
    outlive its revocation. ``None`` means the token never expires (API/MCP
-    "sans fin") → the record is kept forever (capped at ~100 years, the JWT
+    "sans fin") → the     record is kept forever (capped at ~100 years, the JWT
    store's practical infinity). Default keeps 7 days (session tokens).
    """
-    _load_revoked()
-    now = int(time.time())
-    if expires_at is None:
-        until = now + 100 * 365 * 24 * 3600
-    else:
-        until = max(int(expires_at), now + REFRESH_TOKEN_EXPIRE_SECONDS)
-    _revoked_map[jti] = until
-    _save_revoked()
+    with _revoked_lock:
+        _load_revoked()
+        now = int(time.time())
+        if expires_at is None:
+            until = now + 100 * 365 * 24 * 3600
+        else:
+            until = max(int(expires_at), now + REFRESH_TOKEN_EXPIRE_SECONDS)
+        _revoked_map[jti] = until
+        _save_revoked()
    logger.debug(f"Revoked token JTI: {jti[:8]}...")


 def is_token_revoked(jti: str) -> bool:
    """Check if a token JTI has been revoked."""
-    _load_revoked()
-    return jti in _revoked_map
+    with _revoked_lock:
+        _load_revoked()
+        return jti in _revoked_map


 # ---------------------------------------------------------------------------
@@ -2,7 +2,10 @@
 # All /api/auth/* endpoints: login, logout, refresh, me, change-password,
 # and admin user CRUD.

+import base64
+import binascii
 import logging
+import os
 import re

 from fastapi import APIRouter, Body, Depends, HTTPException, Request, Response
@@ -54,6 +57,17 @@ logger = logging.getLogger("obsigate.auth.router")
 router = APIRouter(prefix="/api/auth", tags=["auth"])


+def is_secure_cookies() -> bool:
+    """True when auth cookies must carry the ``Secure`` flag (#87 T3).
+
+    Opt-in via ``OBSIGATE_SECURE_COOKIES=true`` (required behind TLS).
+    Default stays ``false`` so logins keep working over plain HTTP on
+    trusted loopback deployments — browsers drop ``Secure`` cookies sent
+    over HTTP, which would silently break localhost logins.
+    """
+    return os.environ.get("OBSIGATE_SECURE_COOKIES", "false").lower() == "true"
+
+
 # ── Pydantic request models ──────────────────────────────────────────

 class LoginRequest(BaseModel):
@@ -109,6 +123,43 @@ class UpdateUserRequest(BaseModel):
        return validate_password_strength(v)


+# ── Profile avatar (#113) ───────────────────────────────────────────
+
+#: Avatar data-URL pattern — PNG/JPEG/WebP only (no SVG: XSS surface).
+_AVATAR_DATA_URL_RE = re.compile(
+    r"^data:image/(?:png|jpeg|webp);base64,[A-Za-z0-9+/]+={0,2}$"
+)
+#: ~300 KB of base64 payload (a 256px JPEG is ~15 KB; generous headroom).
+_AVATAR_MAX_CHARS = 400_000
+
+
+def _validate_avatar(data_url: str) -> str | None:
+    """Validate an avatar data-URL for storage on the user profile.
+
+    Returns the normalized data-URL, or ``None`` when clearing the avatar
+    (empty string).  Raises ``HTTPException(400)`` on anything else.
+    """
+    if data_url == "":
+        return None
+    if len(data_url) > _AVATAR_MAX_CHARS:
+        raise HTTPException(400, "Avatar image too large")
+    if not _AVATAR_DATA_URL_RE.match(data_url):
+        raise HTTPException(400, "Avatar must be a PNG, JPEG or WebP data URL")
+    try:
+        raw = base64.b64decode(data_url.split(",", 1)[1], validate=True)
+    except (ValueError, binascii.Error) as exc:  # pragma: no cover — regex guards
+        raise HTTPException(400, "Avatar payload is not valid base64") from exc
+    # Confirm the decoded bytes really are a supported image (magic numbers).
+    is_png = raw.startswith(b"\x89PNG\r\n\x1a\n")
+    is_jpeg = raw.startswith(b"\xff\xd8\xff")
+    is_webp = (
+        len(raw) >= 12 and raw[:4] == b"RIFF" and raw[8:12] == b"WEBP"
+    )
+    if not (is_png or is_jpeg or is_webp):
+        raise HTTPException(400, "Avatar payload is not a PNG, JPEG or WebP image")
+    return data_url
+
+
 # ── Public endpoints ──────────────────────────────────────────────────

@router.get("/status")
@@ -190,9 +241,8 @@ def _issue_tokens(user: dict, username: str, remember_me: bool, response: Respon
    access_token = create_access_token(user)
    refresh_token, refresh_jti = create_refresh_token(username, remember=remember_me)

-    import os
    max_age = 2592000 if remember_me else 604800  # 30d or 7d
-    secure = os.environ.get("OBSIGATE_SECURE_COOKIES", "false").lower() == "true"
+    secure = is_secure_cookies()
    response.set_cookie(
        key="refresh_token",
        value=refresh_token,
@@ -214,13 +264,15 @@ def _issue_tokens(user: dict, username: str, remember_me: bool, response: Respon
    )
    return {
        "access_token": access_token,
-        "token_type": "bearer",  # nosec B105 — OAuth2 token_type, pas un mot de passe
+        # OAuth2 token_type, pas un mot de passe (B105) :
+        "token_type": "bearer",  # nosec B105
        "expires_in": ACCESS_TOKEN_EXPIRE_SECONDS,
        "user": {
            "username": user["username"],
            "display_name": user["display_name"],
            "role": user["role"],
            "vaults": user["vaults"],
+            "avatar": user.get("avatar"),
        },
    }

@@ -259,9 +311,7 @@ async def refresh_token_endpoint(request: Request, response: Response):
        if stale:
            raise HTTPException(401, "Session expirée, veuillez vous reconnecter")

-    import os
-
-    secure = os.environ.get("OBSIGATE_SECURE_COOKIES", "false").lower() == "true"
+    secure = is_secure_cookies()
    remember_me = bool(payload.get("remember", False))

    # BUG-027: rotate the refresh token — the old one is now single-use.
@@ -292,7 +342,8 @@ async def refresh_token_endpoint(request: Request, response: Response):

    return {
        "access_token": new_access_token,
-        "token_type": "bearer",  # nosec B105 — OAuth2 token_type, pas un mot de passe
+        # OAuth2 token_type, pas un mot de passe (B105) :
+        "token_type": "bearer",  # nosec B105
        "expires_in": ACCESS_TOKEN_EXPIRE_SECONDS,
    }

@@ -343,6 +394,7 @@ async def get_me(current_user=Depends(require_auth)):
        "vaults": current_user["vaults"],
        "language": current_user.get("language", "fr"),
        "last_login": current_user.get("last_login"),
+        "avatar": current_user.get("avatar"),
    }


@@ -350,19 +402,23 @@ class UpdateMeRequest(BaseModel):
    """Fields the user can update on their own profile."""
    display_name: str | None = None
    language: str | None = None
+    #: Image data-URL (PNG/JPEG/WebP), or ``""`` to remove the avatar (#113).
+    avatar: str | None = None


@router.patch("/me")
 async def patch_me(req: UpdateMeRequest, current_user=Depends(require_auth)):
-    """Update current user's profile fields (display_name, language)."""
+    """Update current user's profile fields (display_name, language, avatar)."""
    from .user_store import update_user
-    updates = {}
+    updates: dict[str, object] = {}
    if req.display_name is not None:
        updates["display_name"] = req.display_name
    if req.language is not None:
        if req.language not in ("fr", "en"):
            raise HTTPException(400, "language must be 'fr' or 'en'")
        updates["language"] = req.language
+    if req.avatar is not None:
+        updates["avatar"] = _validate_avatar(req.avatar)
    if not updates:
        raise HTTPException(400, "No fields to update")
    updated = update_user(current_user["username"], updates)
@@ -373,6 +429,7 @@ async def patch_me(req: UpdateMeRequest, current_user=Depends(require_auth)):
        "vaults": updated["vaults"],
        "language": updated.get("language", "fr"),
        "last_login": updated.get("last_login"),
+        "avatar": updated.get("avatar"),
    }


@@ -96,6 +96,7 @@ def create_user(
            "vaults": vaults or [],
            "active": True,
            "language": "fr",  # default UI language
+            "avatar": None,  # profile picture data-URL (#113)
            "created_at": datetime.now(timezone.utc).isoformat(),
            "password_changed_at": datetime.now(timezone.utc).timestamp(),
            "last_login": None,
@@ -15,6 +15,7 @@ import time
 from pathlib import Path
 from typing import Any

+from backend.media_types import is_media
 from backend.secret_redactor import redact_file_content

 logger = logging.getLogger("obsigate.bookslm")
@@ -185,6 +186,10 @@ def collect_directory_context(vault_path: Path, directory: str) -> dict[str, Any
 def _file_entry(target: Path, rel_path: str, remaining: int) -> dict[str, Any] | None:
    """Read, redact and truncate a single file into a context entry."""
    suffix = target.suffix.lower()
+    # #109-D3 — audio/video (and images) carry no extractable text; never feed
+    # raw bytes to the model. Images are handled separately via vision data URLs.
+    if is_media(suffix):
+        return None
    try:
        if suffix == ".pdf":
            from backend.pdf_reader import extract_pdf_text
@@ -110,6 +110,12 @@ class BooksLMChatRequest(BaseModel):
        description="Conversation snapshot returned alongside a ``confirmation`` event, "
                    "echoed back to resume the agent run.",
    )
+    confirm_all: bool = Field(
+        default=False,
+        description="Global approval (BUG-075): apply every pending action of the batch "
+                    "and auto-approve the remaining mutating calls of the same run, "
+                    "so the run does not pause on each action.",
+    )
    app_context: dict[str, Any] | None = Field(
        default=None,
        description="Live client UI state for the General assistant: open_documents, "
@@ -506,9 +512,11 @@ async def api_bookslm_agent(
    Same context as ``/chat`` but the model may call tools (read/search the
    vault) through the shared tool layer. Emits one ``tool`` event per executed
    tool call, then a final ``message`` event. Mutating tools pause the run with
-    a ``confirmation`` event (two-step propose/apply) carrying the pending call
-    and the conversation snapshot; the client resumes by echoing them back in
-    ``confirm`` / ``confirm_messages``.
+    a ``confirmation`` event (two-step propose/apply) carrying the pending
+    ``actions`` (every mutating call of the turn) and the conversation snapshot;
+    the client resumes by echoing them back in ``confirm`` / ``confirm_messages``,
+    optionally with ``confirm_all`` to apply the whole batch and auto-approve the
+    rest of the run (BUG-075).
    """
    _validate_vision_support(req)
    system_prompt = _resolve_system_prompt(req, current_user, agent=True)
@@ -523,6 +531,10 @@ async def api_bookslm_agent(
    messages.append({"role": "user", "content": _build_user_content(req, vault_path)})

    ctx = ToolContext(user=current_user, mode=ToolMode.IN_APP)
+    if req.confirm_all:
+        # BUG-075: a single global approval authorizes the whole plan, so the
+        # run no longer pauses on every subsequent mutating call.
+        ctx.confirmed = True

    async def _llm(msgs, tool_schemas):
        return await chat_completion(
@@ -35,7 +35,8 @@ def diagram_png_for(code: str) -> Path | None:
    Mermaid, ou None. Le hash doit rester synchrone avec le script de build :
    sha1(unescape(code).strip())[:16]."""
    normalized = html.unescape(code).strip()
-    sha = hashlib.sha1(normalized.encode("utf-8")).hexdigest()[:16]
+    # Identifiant de cache déterministe (pas un usage sécurité).
+    sha = hashlib.sha1(normalized.encode("utf-8")).hexdigest()[:16]  # nosec B324
    png = DIAGRAMS_DIR / (sha + ".png")
    return png if png.exists() else None

@@ -11,6 +11,8 @@ from typing import Any

 import frontmatter

+from backend.media_types import AUDIO_EXTENSIONS, IMAGE_EXTENSIONS, VIDEO_EXTENSIONS, is_media
+
 logger = logging.getLogger("obsigate.indexer")

 # Global in-memory index
@@ -63,13 +65,14 @@ SUPPORTED_EXTENSIONS = {
    ".sh", ".bash", ".zsh", ".fish", ".bat", ".cmd", ".ps1",
    ".json", ".yaml", ".yml", ".toml", ".xml", ".csv",
    ".cfg", ".ini", ".conf", ".env", ".pdf",
+    ".xlsx",
    ".html", ".css", ".scss", ".less",
    ".java", ".c", ".cpp", ".h", ".hpp", ".cs", ".go", ".rs", ".rb",
    ".php", ".sql", ".r", ".m", ".swift", ".kt",
    ".dockerfile", ".makefile", ".cmake",
    ".excalidraw",
    ".excalidraw.md",
-}
+} | set(IMAGE_EXTENSIONS) | set(AUDIO_EXTENSIONS) | set(VIDEO_EXTENSIONS)


 # Ignored directories (configurable via OBSIGATE_IGNORED_DIRS env var)
@@ -550,6 +553,19 @@ def _scan_vault(
                    title = fpath.stem.replace(".excalidraw", "").replace("-", " ").replace("_", " ")
                    content_preview = ""
                    excalidraw_text_pending = True
+                elif is_media(ext):
+                    # #108 — images (and future media, #109) are binary: index
+                    # name/size/mtime only and never read the bytes. ``content``
+                    # stays empty so the TF-IDF index remains clean.
+                    raw = ""
+                    title = fpath.stem.replace("-", " ").replace("_", " ")
+                    content_preview = ""
+                elif ext == ".xlsx":
+                    # #152 — binary workbook: metadata only, the viewer renders
+                    # it (parity with _index_single_file_sync).
+                    raw = ""
+                    title = fpath.stem.replace("-", " ").replace("_", " ")
+                    content_preview = ""
                else:
                    raw = fpath.read_text(encoding="utf-8", errors="replace")
                    title = fpath.stem.replace("-", " ").replace("_", " ")
@@ -934,6 +950,14 @@ def _index_single_file_sync(vault_name: str, vault_path: str, file_path: str, va
            raw = extract_excalidraw_indexable(raw)
            title = fpath.stem.replace(".excalidraw", "").replace("-", " ").replace("_", " ")
            content_preview = raw[:200].strip()
+        elif is_media(ext):
+            # #108 — binary media: metadata only, never read the bytes.
+            raw = ""
+            content_preview = ""
+        elif ext == ".xlsx":
+            # #152 — binary workbook: metadata only (parity with _scan_vault).
+            raw = ""
+            content_preview = ""
        else:
            raw = fpath.read_text(encoding="utf-8", errors="replace")
            content_preview = raw[:200].strip()
@@ -0,0 +1,75 @@
+"""Image thumbnail generation and disk cache (roadmap #108-C).
+
+Thumbnails are generated on demand with Pillow and cached under
+``<OBSIGATE_DATA_DIR>/.obsigate-cache/thumbs/<sha1>.webp``. The cache key
+embeds the source path, mtime (ns) and size, so an edited image naturally
+invalidates its stale thumbnail without any explicit cleanup.
+"""
+
+from __future__ import annotations
+
+import hashlib
+import os
+from pathlib import Path
+
+DEFAULT_THUMB_SIZE = 256
+
+# Extensions Pillow cannot decode without extra native libraries: served as-is.
+_UNDECODABLE = {".svg"}
+
+
+def thumbs_cache_dir() -> Path:
+    """Return (and create) the thumbnail cache directory."""
+    base = Path(os.environ.get("OBSIGATE_DATA_DIR", "data")) / ".obsigate-cache" / "thumbs"
+    base.mkdir(parents=True, exist_ok=True)
+    return base
+
+
+def thumb_cache_path(file_path: Path, size: int) -> Path:
+    """Compute the deterministic cache path for *file_path* at *size*."""
+    try:
+        st = file_path.stat()
+        stamp = f"{st.st_mtime_ns}:{st.st_size}"
+    except OSError:
+        stamp = "0:0"
+    # Clé de cache miniature (pas un usage sécurité).
+    key = hashlib.sha1(f"{file_path}:{stamp}:{size}".encode()).hexdigest()  # nosec B324
+    return thumbs_cache_dir() / f"{key}.webp"
+
+
+def is_decodable(file_path: Path) -> bool:
+    """True when Pillow can be expected to decode *file_path*."""
+    return file_path.suffix.lower() not in _UNDECODABLE
+
+
+def generate_thumbnail(file_path: Path, size: int = DEFAULT_THUMB_SIZE) -> Path | None:
+    """Generate (or reuse) a WebP thumbnail and return its path.
+
+    Returns ``None`` when the file cannot be decoded (e.g. SVG) or Pillow is
+    unavailable, so the caller can fall back to serving the original.
+    """
+    cache_path = thumb_cache_path(file_path, size)
+    if cache_path.exists():
+        return cache_path
+
+    try:
+        from PIL import Image, ImageOps
+    except Exception:  # pragma: no cover - Pillow is an optional runtime dep
+        return None
+
+    try:
+        with Image.open(file_path) as opened:
+            # Animated formats: keep only the first frame.
+            if getattr(opened, "is_animated", False):
+                opened.seek(0)
+            img = ImageOps.exif_transpose(opened) or opened
+            if img.mode not in ("RGB", "RGBA"):
+                img = img.convert("RGBA")
+            img.thumbnail((size, size))
+
+            tmp = cache_path.with_suffix(".tmp")
+            img.save(tmp, "WEBP", quality=80)
+        os.replace(tmp, cache_path)
+        return cache_path
+    except Exception:
+        return None
@@ -0,0 +1,76 @@
+"""Shared media type constants and helpers.
+
+Single source of truth for the file extensions and MIME types handled by the
+image support (roadmap #108) and reused by the audio/video players (#109).
+Keeping these sets here avoids the previous duplication (``indexer.py``,
+``attachment_indexer.py`` and ``main.py`` each carried their own copy).
+"""
+
+from __future__ import annotations
+
+import mimetypes
+
+# Image extensions viewable in the browser (HEIC/HEIF deliberately excluded —
+# no browser decodes them natively; see roadmap #108).
+IMAGE_EXTENSIONS: frozenset[str] = frozenset({
+    ".png", ".jpg", ".jpeg", ".gif", ".svg", ".webp", ".bmp", ".ico",
+})
+
+# Audio extensions (socle for #109, not wired into the index yet).
+AUDIO_EXTENSIONS: frozenset[str] = frozenset({
+    ".mp3", ".m4a", ".aac", ".wav", ".ogg", ".oga", ".opus", ".flac",
+})
+
+# Video extensions (socle for #109, not wired into the index yet).
+VIDEO_EXTENSIONS: frozenset[str] = frozenset({
+    ".mp4", ".webm", ".mov", ".m4v",
+})
+
+MEDIA_EXTENSIONS: frozenset[str] = IMAGE_EXTENSIONS | AUDIO_EXTENSIONS | VIDEO_EXTENSIONS
+
+# Explicit MIME types for extensions ``mimetypes`` gets wrong or does not know.
+_MIME_OVERRIDES: dict[str, str] = {
+    ".jpg": "image/jpeg",
+    ".jpeg": "image/jpeg",
+    ".svg": "image/svg+xml",
+    ".ico": "image/x-icon",
+    ".webp": "image/webp",
+    ".m4a": "audio/mp4",
+    ".oga": "audio/ogg",
+    ".opus": "audio/ogg",
+    ".mov": "video/quicktime",
+    ".m4v": "video/mp4",
+}
+
+
+def is_image(ext: str) -> bool:
+    """Return True when *ext* (with leading dot, any case) is an image."""
+    return ext.lower() in IMAGE_EXTENSIONS
+
+
+def is_audio(ext: str) -> bool:
+    """Return True when *ext* is an audio extension."""
+    return ext.lower() in AUDIO_EXTENSIONS
+
+
+def is_video(ext: str) -> bool:
+    """Return True when *ext* is a video extension."""
+    return ext.lower() in VIDEO_EXTENSIONS
+
+
+def is_media(ext: str) -> bool:
+    """Return True when *ext* is any supported image/audio/video extension."""
+    return ext.lower() in MEDIA_EXTENSIONS
+
+
+def media_mime_type(path: str) -> str:
+    """Return the best MIME type for *path* (extension based).
+
+    Falls back to ``application/octet-stream`` when the type is unknown.
+    """
+    lower = path.lower()
+    for ext, mime in _MIME_OVERRIDES.items():
+        if lower.endswith(ext):
+            return mime
+    guessed, _ = mimetypes.guess_type(path)
+    return guessed or "application/octet-stream"
@@ -181,6 +181,10 @@ _ENDPOINT_EXAMPLES: dict[tuple[str, str], dict[str, Any]] = {
        "request": {"path": "notes/Accueil.md", "content": "# Accueil\n\nMis à jour."},
        "response": {"status": "ok", "vault": "TestVault", "path": "notes/Accueil.md", "size": 26},
    },
+    ("put", "/api/file/{vault_name}/xlsx/save"): {
+        "request": {"sheet": "Budget", "cells": {"B1": "250"}},
+        "response": {"status": "ok", "vault": "TestVault", "path": "data/budget.xlsx", "size": 1},
+    },
    ("post", "/api/search/replace"): {
        "request": {"query": "Python", "replacement": "Python 3", "vault": "all", "dry_run": True},
        "response": {"matches": [{"vault": "TestVault", "path": "note1.md", "title": "Python", "match_count": 3}], "total_matches": 3, "dry_run": True},
@@ -12,14 +12,24 @@ the per-account lockout in ``user_store.py``.
   deployment, front this service with a shared store (Redis) or a single
   worker.  This limitation is intentional and documented (BUG-031).

+   Opt-in persistence (ROADMAP #85 T10b) : if ``OBSIGATE_RATELIMIT_DB`` points
+   to a SQLite file, counters are stored there instead (WAL mode, one short
+   connection per call — safe across threads, processes and restarts sharing
+   the same file).  Semantics (windows, budgets, success reset) are identical
+   to the in-memory store, which remains the default when the variable is
+   unset.
+
 Configuration via environment variables:
    OBSIGATE_LOGIN_MAX_ATTEMPTS     Max failures per IP (default: 10)
    OBSIGATE_ACCOUNT_MAX_ATTEMPTS   Max failures per account (default: 10)
    OBSIGATE_LOGIN_WINDOW_SECONDS   Lockout window in seconds (default: 900)
+    OBSIGATE_RATELIMIT_DB           SQLite file for shared/persistent counters (default: unset = memory)
 """

 import logging
 import os
+import sqlite3
+import threading
 import time
 from collections import defaultdict

@@ -37,6 +47,127 @@ _last_cleanup = time.time()
 CLEANUP_INTERVAL = 60  # seconds


+def _db_path() -> str | None:
+    """SQLite file for shared counters, or ``None`` for the in-memory store."""
+    path = os.environ.get("OBSIGATE_RATELIMIT_DB", "").strip()
+    return path or None
+
+
+def _db_connect(path: str) -> sqlite3.Connection:
+    """Open a short-lived connection (WAL + busy timeout for concurrent workers)."""
+    _db_ensure_schema(path)
+    conn = sqlite3.connect(path, timeout=10.0)
+    conn.execute("PRAGMA busy_timeout=10000")
+    return conn
+
+
+_schema_ready: set[str] = set()
+_schema_lock = threading.Lock()
+
+
+def _db_ensure_schema(path: str) -> None:
+    """Create the store schema once per file (DDL under a process-wide lock)."""
+    with _schema_lock:
+        if path in _schema_ready:
+            return
+        conn = sqlite3.connect(path, timeout=10.0)
+        try:
+            conn.execute("PRAGMA journal_mode=WAL")
+            conn.execute(
+                "CREATE TABLE IF NOT EXISTS attempts"
+                " (kind TEXT NOT NULL, key TEXT NOT NULL, ts REAL NOT NULL, success INTEGER NOT NULL)"
+            )
+            conn.execute(
+                "CREATE INDEX IF NOT EXISTS idx_attempts_kind_key_ts"
+                " ON attempts (kind, key, ts)"
+            )
+            conn.commit()
+        finally:
+            conn.close()
+        _schema_ready.add(path)
+
+
+def _db_write(fn, *args):
+    """Run a write op, retrying once on lock contention (concurrent workers)."""
+    try:
+        return fn(*args)
+    except sqlite3.OperationalError as e:
+        if "locked" not in str(e).lower():
+            raise
+        time.sleep(0.05)
+        return fn(*args)
+
+
+def _db_prune(conn: sqlite3.Connection, cutoff: float) -> None:
+    """Drop expired entries (best-effort cap on disk growth)."""
+    conn.execute("DELETE FROM attempts WHERE ts <= ?", (cutoff,))
+
+
+def _db_record(kind: str, key: str, success: bool) -> int:
+    """Record one attempt in SQLite; return the live failure count."""
+    path = _db_path()
+    assert path is not None
+    now = time.time()
+    cutoff = now - WINDOW_SECONDS
+
+    def _write() -> int:
+        with _db_connect(path) as conn:
+            _db_prune(conn, cutoff)
+            if success:
+                # Mirror the in-memory reset: replace history with one success.
+                conn.execute("DELETE FROM attempts WHERE kind = ? AND key = ?", (kind, key))
+            conn.execute(
+                "INSERT INTO attempts (kind, key, ts, success) VALUES (?, ?, ?, ?)",
+                (kind, key, now, int(success)),
+            )
+            conn.commit()
+            (failures,) = conn.execute(
+                "SELECT COUNT(*) FROM attempts WHERE kind = ? AND key = ? AND ts > ? AND success = 0",
+                (kind, key, cutoff),
+            ).fetchone()
+        return failures
+
+    return _db_write(_write)
+
+
+def _db_failures(kind: str, key: str) -> int:
+    """Live failure count in SQLite (expired entries never count)."""
+    path = _db_path()
+    assert path is not None
+    cutoff = time.time() - WINDOW_SECONDS
+    with _db_connect(path) as conn:
+        (failures,) = conn.execute(
+            "SELECT COUNT(*) FROM attempts WHERE kind = ? AND key = ? AND ts > ? AND success = 0",
+            (kind, key, cutoff),
+        ).fetchone()
+    return failures
+
+
+def _db_tracked(kind: str) -> int:
+    """Number of distinct keys ever seen for one budget (SQLite)."""
+    path = _db_path()
+    assert path is not None
+    with _db_connect(path) as conn:
+        (n,) = conn.execute(
+            "SELECT COUNT(DISTINCT key) FROM attempts WHERE kind = ?", (kind,)
+        ).fetchone()
+    return n
+
+
+def _db_limited_count(kind: str, max_attempts: int) -> int:
+    """Number of keys currently over budget (SQLite)."""
+    path = _db_path()
+    assert path is not None
+    cutoff = time.time() - WINDOW_SECONDS
+    with _db_connect(path) as conn:
+        rows = conn.execute(
+            "SELECT key, COUNT(*) FROM attempts"
+            " WHERE kind = ? AND ts > ? AND success = 0 GROUP BY key",
+            (kind, cutoff),
+        ).fetchall()
+    return sum(1 for _, n in rows if n >= max_attempts)
+
+
 def _prune(store: dict[str, list], cutoff: float) -> None:
    """Drop expired entries from one store in place."""
    expired = []
@@ -66,6 +197,12 @@ def record_failure(ip: str) -> tuple[int, int]:
    Returns:
        (current_failure_count, remaining_attempts)
    """
+    if _db_path() is not None:
+        failures = _db_record("ip", ip, False)
+        remaining = max(0, MAX_ATTEMPTS - failures)
+        if failures >= MAX_ATTEMPTS:
+            logger.warning(f"IP {ip} rate-limited after {failures} failed logins")
+        return failures, remaining
    _cleanup_expired()
    _ip_attempts[ip].append((time.time(), False))
    failures = sum(1 for _, success in _ip_attempts[ip] if not success)
@@ -77,12 +214,17 @@ def record_failure(ip: str) -> tuple[int, int]:

 def record_success(ip: str):
    """Clear rate limit state for an IP after successful login."""
+    if _db_path() is not None:
+        _db_record("ip", ip, True)
+        return
    _cleanup_expired()
    _ip_attempts[ip] = [(time.time(), True)]


 def is_rate_limited(ip: str) -> bool:
    """Check if an IP has exceeded the rate limit."""
+    if _db_path() is not None:
+        return _db_failures("ip", ip) >= MAX_ATTEMPTS
    _cleanup_expired()
    failures = sum(1 for _, success in _ip_attempts.get(ip, []) if not success)
    return failures >= MAX_ATTEMPTS
@@ -94,8 +236,14 @@ def record_account_failure(account: str) -> tuple[int, int]:
    Returns:
        (current_failure_count, remaining_attempts)
    """
-    _cleanup_expired()
    key = account.lower()
+    if _db_path() is not None:
+        failures = _db_record("account", key, False)
+        remaining = max(0, ACCOUNT_MAX_ATTEMPTS - failures)
+        if failures >= ACCOUNT_MAX_ATTEMPTS:
+            logger.warning(f"Account {account} rate-limited after {failures} failed attempts")
+        return failures, remaining
+    _cleanup_expired()
    _account_attempts[key].append((time.time(), False))
    failures = sum(1 for _, success in _account_attempts[key] if not success)
    remaining = max(0, ACCOUNT_MAX_ATTEMPTS - failures)
@@ -106,12 +254,17 @@ def record_account_failure(account: str) -> tuple[int, int]:

 def record_account_success(account: str):
    """Clear the per-account rate limit state after a successful login."""
+    if _db_path() is not None:
+        _db_record("account", account.lower(), True)
+        return
    _cleanup_expired()
    _account_attempts[account.lower()] = [(time.time(), True)]


 def is_account_rate_limited(account: str) -> bool:
    """Check if an account has exceeded the per-account rate limit."""
+    if _db_path() is not None:
+        return _db_failures("account", account.lower()) >= ACCOUNT_MAX_ATTEMPTS
    _cleanup_expired()
    failures = sum(
        1 for _, success in _account_attempts.get(account.lower(), []) if not success
@@ -121,6 +274,24 @@ def is_account_rate_limited(account: str) -> bool:

 def get_status(ip: str | None = None) -> dict:
    """Get rate limit status for an IP (for diagnostics)."""
+    if _db_path() is not None:
+        if ip:
+            failures = _db_failures("ip", ip)
+            return {
+                "ip": ip,
+                "failures": failures,
+                "max": MAX_ATTEMPTS,
+                "limited": failures >= MAX_ATTEMPTS,
+                "window_seconds": WINDOW_SECONDS,
+            }
+        return {
+            "tracked_ips": _db_tracked("ip"),
+            "tracked_accounts": _db_tracked("account"),
+            "max_attempts": MAX_ATTEMPTS,
+            "account_max_attempts": ACCOUNT_MAX_ATTEMPTS,
+            "window_seconds": WINDOW_SECONDS,
+            "limited_ips": _db_limited_count("ip", MAX_ATTEMPTS),
+        }
    _cleanup_expired()
    if ip:
        attempts = _ip_attempts.get(ip, [])
@@ -0,0 +1,207 @@
+"""Markdown rendering pipeline (ROADMAP #85, tranche 9).
+
+Helpers extraits de :mod:`backend.main` sans changement de comportement :
+slugification des headings, IDs d'ancrage, rendu mistune singleton,
+wikilinks, normalisation des sauts de ligne et pipeline complet
+:func:`_render_markdown` (rendu + sanitizer XSS BUG-021).
+
+Les noms gardent leur préfixe ``_`` d'origine pour un déplacement
+strictement verbatim (tests et routers pointent ici désormais).
+"""
+
+from __future__ import annotations
+
+import html as html_mod
+import re
+import unicodedata
+from pathlib import Path
+
+import mistune
+
+from backend.image_processor import preprocess_images
+from backend.indexer import find_file_in_index, get_vault_data
+from backend.secret_redactor import redact_file_content
+from backend.services.sanitizer import sanitize_html
+
+
+def _heading_slugify(text: str) -> str:
+    """Generate a URL-safe slug from heading text.
+
+    Matches the JavaScript slugify algorithm exactly using
+    Unicode-aware character classification:
+    1. Strip HTML tags (e.g. wikilink spans rendered inside headings)
+    2. Decode HTML entities (e.g. ``&amp;`` → ``&``)
+    3. Lowercase
+    4. NFD normalize + strip combining marks
+    5. Keep only Unicode letters, numbers, spaces, hyphens
+    6. Replace spaces with hyphens, collapse multiple hyphens
+
+    Args:
+        text: The heading text content (may contain inline HTML).
+
+    Returns:
+        A URL-safe slug string.
+    """
+    # Strip any inline HTML so it does not pollute the slug
+    text = re.sub(r"<[^>]+>", "", text)
+    # Decode HTML entities so &amp; becomes & before slugification
+    text = html_mod.unescape(text)
+    text = text.lower()
+    text = unicodedata.normalize("NFD", text)
+    text = "".join(ch for ch in text if not unicodedata.combining(ch))
+    # Unicode-aware: keep letters (L*), numbers (N*), spaces, and hyphens
+    cleaned = []
+    for ch in text:
+        cat = unicodedata.category(ch)
+        if cat.startswith('L') or cat.startswith('N') or ch in (' ', '-'):
+            cleaned.append(ch)
+    text = "".join(cleaned)
+    text = re.sub(r"\s+", "-", text)
+    text = re.sub(r"-+", "-", text)
+    result = text.strip("-")
+    return result if result else "heading"
+
+
+def _add_heading_ids(html: str) -> str:
+    """Post-process rendered HTML to add IDs to heading tags.
+
+    Adds an ``id`` attribute to every ``<h1>`` through ``<h6>`` tag
+    using a slug generated from the heading's text content.
+    Duplicate slugs get a ``-2``, ``-3``, etc. suffix.
+
+    Args:
+        html: Rendered HTML string.
+
+    Returns:
+        HTML with heading IDs injected.
+    """
+    used_ids: dict[str, int] = {}
+
+    def _replace_heading(match):
+        tag = match.group(1)
+        content = match.group(2)
+        slug = _heading_slugify(content)
+        count = used_ids.get(slug, 0)
+        used_ids[slug] = count + 1
+        if count > 0:
+            slug = f"{slug}-{count + 1}"
+        return f'<{tag} id="{slug}">{content}</{tag}>'
+
+    # Match h1-h6 tags with text content (no existing id attribute)
+    return re.sub(
+        r'<(h[1-6])>([^<]*(?:<(?!/?h[1-6])[^<]*)*)</h[1-6]>',
+        _replace_heading,
+        html,
+    )
+
+
+# Cached mistune renderer — avoids re-creating on every request
+_markdown_renderer = mistune.create_markdown(
+    escape=False,
+    plugins=["table", "strikethrough", "footnotes", "task_lists"],
+)
+
+
+def _convert_wikilinks(content: str, current_vault: str) -> str:
+    """Convert ``[[wikilinks]]`` and ``[[target|display]]`` to clickable HTML.
+
+    Supports:
+    - Internal file links: ``[[My Note]]`` / ``[[My Note|display]]``
+    - Same-document anchors: ``[[#Heading]]`` / ``[[#Heading|display]]``
+
+    Resolved file links get a ``data-vault`` / ``data-path`` attribute pair.
+    Anchor links target the slugified heading ID in the current document.
+    Unresolved links are rendered as ``<span class="wikilink-missing">``.
+
+    Args:
+        content: Markdown string potentially containing wikilinks.
+        current_vault: Active vault name for resolution priority.
+
+    Returns:
+        Markdown string with wikilinks replaced by HTML anchors.
+    """
+    def _replace(match):
+        target = match.group(1).strip()
+        display = match.group(2).strip() if match.group(2) else target
+
+        # Same-document anchor link: [[#Heading|display]]
+        if target.startswith("#"):
+            anchor_text = target[1:].strip()
+            anchor_slug = _heading_slugify(anchor_text)
+            link_display = display if display != target else anchor_text
+            return f'<a class="wikilink-anchor" href="#{anchor_slug}">{link_display}</a>'
+
+        found = find_file_in_index(target, current_vault)
+        if found:
+            return (
+                f'<a class="wikilink" href="#" '
+                f'data-vault="{found["vault"]}" '
+                f'data-path="{found["path"]}">{display}</a>'
+            )
+        return f'<span class="wikilink-missing">{display}</span>'
+
+    pattern = r'\[\[([^\]|]+)(?:\|([^\]]+))?\]\]'
+    return re.sub(pattern, _replace, content)
+
+
+def _normalize_line_breaks(text: str) -> str:
+    """Convert single newlines to hard breaks (matching Obsidian default behavior).
+
+    In standard Markdown, a single ``\\n`` is a "soft break" — it renders as a space,
+    not a visible line break.  Obsidian defaults to treating single newlines as hard
+    breaks (equivalent to ``<br>``).  This function pre-processes the Markdown source
+    so that mistune renders standalone lines on separate rows, while still honouring
+    blank lines as paragraph separators.
+
+    Fenced code blocks (`` ``` ``) are left untouched so their internal newlines are
+    preserved verbatim.
+    """
+    parts = re.split(r"(```[\s\S]*?```)", text)
+    for i, part in enumerate(parts):
+        if part.startswith("```"):
+            continue  # Protect fenced code blocks
+        # Single \n (not preceded or followed by another \n) → two spaces + \n
+        parts[i] = re.sub(r"(?<!\n)\n(?!\n)", "  \n", part)
+    return "".join(parts)
+
+
+def _render_markdown(raw_md: str, vault_name: str, current_file_path: Path | None = None) -> str:
+    """Render a markdown string to HTML with wikilink and image support.
+
+    Uses the cached singleton mistune renderer for performance.
+
+    Args:
+        raw_md: Raw markdown text (frontmatter already stripped).
+        vault_name: Current vault for wikilink resolution context.
+        current_file_path: Absolute path to the current markdown file.
+
+    Returns:
+        HTML string.
+    """
+    # Get vault data for image resolution
+    vault_data = get_vault_data(vault_name)
+    vault_root = Path(vault_data["path"]) if vault_data else None
+    attachments_path = vault_data.get("config", {}).get("attachmentsPath") if vault_data else None
+
+    # Redact secrets before rendering (P0 security)
+    raw_md = redact_file_content(raw_md, str(current_file_path) if current_file_path else "")
+
+    # Preprocess images first
+    if vault_root:
+        raw_md = preprocess_images(raw_md, vault_name, vault_root, current_file_path, attachments_path)
+
+    # Convert wikilinks
+    converted = _convert_wikilinks(raw_md, vault_name)
+
+    # Normalize line breaks to match Obsidian behavior (single \n → hard break)
+    converted = _normalize_line_breaks(converted)
+
+    rendered = _markdown_renderer(converted)
+
+    # Add heading IDs for TOC navigation
+    rendered = _add_heading_ids(rendered)
+
+    # Sanitize: raw HTML in vault content must never reach the DOM (BUG-021).
+    rendered = sanitize_html(rendered)
+
+    return rendered
@@ -24,3 +24,4 @@ sse-starlette==2.1.3
 openpyxl>=3.1
 python-docx>=1.1
 reportlab>=4.0
+pillow>=10.0
@@ -0,0 +1,7 @@
+"""ObsiGate — routers FastAPI par domaine (ROADMAP #85).
+
+Découpage progressif du monolithe ``backend/main.py`` : chaque module de ce
+paquet expose un ``APIRouter`` monté par ``main.py``. Les handlers sont
+déplacés sans changement de comportement (mêmes chemins, mêmes modèles de
+réponse, mêmes dépendances d'authentification).
+"""
@@ -0,0 +1,412 @@
+"""Backup endpoints (ROADMAP #85, tranche 4).
+
+Handlers déplacés depuis :mod:`backend.main` sans changement de
+comportement : mêmes chemins (``/api/file/{vault}/backups|diff|restore``,
+``/api/backups*``), mêmes modèles de réponse, mêmes dépendances
+d'authentification. La logique métier vit déjà dans
+:mod:`backend.services.backups`.
+
+Adaptations strictement équivalentes :
+- ``_resolve_safe_path`` / ``_backup_file`` / ``_list_backup_files`` de
+  ``main`` n'étaient que des wrappers directs : appelés ici via
+  :mod:`backend.services.paths` et :mod:`backend.services.backups`.
+- ``RestoreRequest`` / ``RestoreResponse`` / ``DiffResponse`` ont déménagé
+  dans :mod:`backend.schemas`.
+- Le singleton SSE vit désormais dans :mod:`backend.sse` (partagé avec
+  ``main`` : les clients ``/api/events`` reçoivent les mêmes broadcasts).
+"""
+
+import logging
+import os
+import time
+from datetime import datetime, timezone
+from pathlib import Path
+from typing import Any
+
+from fastapi import APIRouter, Body, Depends, HTTPException, Query
+
+from backend.auth.middleware import check_vault_access, require_auth
+from backend.indexer import get_vault_data, index, update_single_file
+from backend.schemas import (
+    BackupContentResponse,
+    BackupsAutoResponse,
+    BackupsCompressResponse,
+    BackupsDeletedResponse,
+    BackupsListResponse,
+    BackupsResponse,
+    DiffResponse,
+    RestoreRequest,
+    RestoreResponse,
+)
+from backend.services.backups import (
+    create_backup,
+)
+from backend.services.backups import (
+    diff_backup as service_diff_backup,
+)
+from backend.services.backups import (
+    list_backup_files as service_list_backup_files,
+)
+from backend.services.mutations import (
+    restore_backup as service_restore_backup,
+)
+from backend.services.paths import resolve_safe_path
+from backend.sse import sse_manager
+from backend.webhooks import dispatch_webhooks
+
+logger = logging.getLogger("obsigate")
+
+router = APIRouter(tags=["backups"])
+
+
+@router.get("/api/file/{vault_name}/backups", response_model=BackupsResponse)
+async def api_file_backups(
+    vault_name: str,
+    path: str = Query(..., description="Relative path to file"),
+    current_user=Depends(require_auth),
+):
+    """List all available backups for a file.
+
+    Args:
+        vault_name: Name of the vault.
+        path: Relative path of the file within the vault.
+
+    Returns:
+        BackupListResponse with backups sorted newest first.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+
+    vault_data = get_vault_data(vault_name)
+    if not vault_data:
+        raise HTTPException(status_code=404, detail=f"Vault '{vault_name}' not found")
+
+    vault_root = Path(vault_data["path"])
+    file_path = resolve_safe_path(vault_root, path)
+
+    if not file_path.exists() or not file_path.is_file():
+        raise HTTPException(status_code=404, detail=f"File not found: {path}")
+
+    try:
+        backups = service_list_backup_files(vault_name, path)
+    except Exception as e:
+        logger.error(f"Error listing backups for {vault_name}/{path}: {type(e).__name__}: {e}", exc_info=True)
+        raise HTTPException(status_code=500, detail=f"Erreur lors de la lecture des backups: {e!s}")
+
+    return {"vault": vault_name, "path": path, "backups": backups}
+
+
+@router.get("/api/file/{vault_name}/diff", response_model=DiffResponse)
+async def api_file_diff(
+    vault_name: str,
+    path: str = Query(..., description="Relative path to file"),
+    version: int = Query(..., description="Timestamp of the backup version (left/old side)"),
+    compare_with: int | None = Query(default=None, description="Timestamp of another backup (right/new side). If omitted, compares with the current file."),
+    current_user=Depends(require_auth),
+):
+    """Generate a unified diff between a backup version and another version or the current file.
+
+    Args:
+        vault_name: Name of the vault.
+        path: Relative path of the file within the vault.
+        version: Timestamp of the backup to use as the old/left side.
+        compare_with: Optional timestamp of another backup as the new/right side.
+                       If omitted, the current file on disk is used.
+
+    Returns:
+        DiffResponse containing the unified diff string.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+
+    return service_diff_backup(vault_name, path, version, compare_with)
+
+
+@router.post("/api/file/{vault_name}/restore", response_model=RestoreResponse)
+async def api_file_restore(
+    vault_name: str,
+    path: str = Query(..., description="Relative path to file"),
+    body: RestoreRequest = ..., # type: ignore
+    current_user=Depends(require_auth),
+):
+    """Restore a file from a backup version.
+
+    The current file is backed up before being overwritten (so the operation is reversible).
+
+    Args:
+        vault_name: Name of the vault.
+        path: Relative path of the file within the vault.
+        body: RestoreRequest with the backup version timestamp.
+
+    Returns:
+        RestoreResponse confirming the restore.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+
+    result = service_restore_backup(vault_name, path, body.version)
+    current_backed_up = result["current_backed_up"]
+
+    # Update index
+    await update_single_file(vault_name, path)
+
+    # Broadcast SSE event
+    await sse_manager.broadcast("file_restored", {
+        "vault": vault_name,
+        "path": path,
+        "restored_from": body.version,
+        "current_backed_up": current_backed_up,
+    })
+    await dispatch_webhooks("file_restored", {"vault": vault_name, "path": path, "restored_from": body.version})
+
+    return {
+        "success": True,
+        "vault": vault_name,
+        "path": path,
+        "restored_from": body.version,
+        "current_backed_up": current_backed_up,
+    }
+
+
+@router.get("/api/backups", response_model=BackupsListResponse)
+async def api_backups_list(
+    vault: str | None = Query(None, description="Filter by vault name"),
+    current_user=Depends(require_auth),
+):
+    """List all backups across vaults, grouped by file."""
+    result: list[dict[str, Any]] = []
+    try:
+      for vault_name in index:
+        if vault and vault_name != vault:
+            continue
+        if not check_vault_access(vault_name, current_user):
+            continue
+        vd = get_vault_data(vault_name)
+        if not vd:
+            continue
+        vault_root = Path(vd["path"])
+        backup_root = Path(os.environ.get("OBSIGATE_BACKUP_DIR", ".obsigate-backup"))
+        if not backup_root.is_absolute():
+            backup_root = vault_root / backup_root
+        vault_backup_dir = backup_root / vault_name
+        if not vault_backup_dir.exists():
+            continue
+        for fpath in vault_backup_dir.rglob("*.bak"):
+            if not fpath.is_file():
+                continue
+            st = fpath.stat()
+            fsize = st.st_size
+            ts_part = fpath.name.rsplit(".", 2)
+            if len(ts_part) < 3 or not ts_part[-2].isdigit():
+                continue
+            ts = int(ts_part[-2])
+            rel_dir = str(fpath.parent.relative_to(vault_backup_dir)).replace("\\", "/")
+            rel_file = rel_dir + "/" + ts_part[0] if rel_dir != "." else ts_part[0]
+            result.append({
+                "vault": vault_name,
+                "file": rel_file,
+                "backup_file": fpath.name,
+                "timestamp": ts,
+                "datetime": datetime.fromtimestamp(ts, tz=timezone.utc).isoformat(),
+                "size": fsize,
+                "full_path": str(fpath),
+            })
+
+      result.sort(key=lambda x: x["timestamp"], reverse=True)
+      total_size = sum(r["size"] for r in result)
+      return {"backups": result, "total": len(result), "total_size_bytes": total_size}
+    except Exception as e:
+        logger.error(f"Error listing backups: {type(e).__name__}: {e}", exc_info=True)
+        raise HTTPException(status_code=500, detail=f"Erreur listing backups: {e!s}")
+
+
+@router.post("/api/backups/delete", response_model=BackupsDeletedResponse)
+async def api_backups_delete(
+    body: dict = Body(...),
+    current_user=Depends(require_auth),
+):
+    """Delete one or more backup files."""
+    paths = body.get("paths", [])
+    if not paths:
+        raise HTTPException(status_code=400, detail="No backup paths provided")
+
+    deleted = 0
+    for p in paths:
+        try:
+            fpath = Path(p)
+            # Security: ensure path is within a backup directory
+            if ".obsigate-backup" not in str(fpath):
+                continue
+            if fpath.exists() and fpath.is_file():
+                fpath.unlink()
+                deleted += 1
+        except Exception as e:
+            logger.warning(f"Failed to delete backup {p}: {e}")
+
+    return {"deleted": deleted}
+
+
+@router.post("/api/backups/purge", response_model=BackupsDeletedResponse)
+async def api_backups_purge(
+    body: dict = Body(...),
+    current_user=Depends(require_auth),
+):
+    """Purge all backups for a specific file or entire vault."""
+    vault_name = body.get("vault")
+    file_path = body.get("file")  # optional
+
+    if not vault_name:
+        raise HTTPException(status_code=400, detail="Vault name required")
+
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail="Access denied")
+
+    vd = get_vault_data(vault_name)
+    if not vd:
+        raise HTTPException(status_code=404, detail="Vault not found")
+
+    vault_root = Path(vd["path"])
+    backup_root = Path(os.environ.get("OBSIGATE_BACKUP_DIR", ".obsigate-backup"))
+    if not backup_root.is_absolute():
+        backup_root = vault_root / backup_root
+
+    if file_path:
+        # Delete backups for specific file
+        backup_dir = backup_root / vault_name / Path(file_path).parent
+        if backup_dir.exists():
+            fname = Path(file_path).name
+            deleted = 0
+            for f in backup_dir.iterdir():
+                if f.is_file() and f.name.startswith(fname + ".") and f.name.endswith(".bak"):
+                    f.unlink()
+                    deleted += 1
+            return {"deleted": deleted}
+        return {"deleted": 0}
+    else:
+        # Delete all backups for vault
+        vault_backup_dir = backup_root / vault_name
+        if vault_backup_dir.exists():
+            deleted = 0
+            for f in vault_backup_dir.rglob("*.bak"):
+                if f.is_file():
+                    f.unlink()
+                    deleted += 1
+            return {"deleted": deleted}
+        return {"deleted": 0}
+
+
+
+@router.get("/api/backups/content", response_model=BackupContentResponse)
+async def api_backups_content(
+    path: str = Query(..., description="Full path to backup file"),
+    current_user=Depends(require_auth),
+):
+    """Return the content of a specific backup file."""
+    try:
+        fpath = Path(path)
+        if ".obsigate-backup" not in str(fpath):
+            raise HTTPException(status_code=403, detail="Access denied")
+        if not fpath.exists() or not fpath.is_file():
+            raise HTTPException(status_code=404, detail="Backup not found")
+        content = fpath.read_text(encoding="utf-8", errors="replace")
+        # Truncate large files to 100KB
+        if len(content) > 102400:
+            content = content[:102400] + "\n\n... (tronque a 100 Ko)"
+        return {"content": content, "name": fpath.name, "size": len(content)}
+    except HTTPException:
+        raise
+    except Exception as e:
+        raise HTTPException(status_code=500, detail=str(e))
+
+
+@router.post("/api/backups/compress", response_model=BackupsCompressResponse)
+async def api_backups_compress(
+    body: dict = Body(...),
+    current_user=Depends(require_auth),
+):
+    """Compress backups older than N days. Body: {older_than_days: 30, dry_run: false}"""
+    import gzip as gz_mod
+    older_than = body.get("older_than_days", 30)
+    dry_run = body.get("dry_run", False)
+    cutoff = time.time() - (older_than * 86400)
+    compressed = 0
+    saved_bytes = 0
+
+    for vault_name in index:
+        if not check_vault_access(vault_name, current_user):
+            continue
+        vd = get_vault_data(vault_name)
+        if not vd:
+            continue
+        vault_root = Path(vd["path"])
+        backup_root = Path(os.environ.get("OBSIGATE_BACKUP_DIR", ".obsigate-backup"))
+        if not backup_root.is_absolute():
+            backup_root = vault_root / backup_root
+        vault_dir = backup_root / vault_name
+        if not vault_dir.exists():
+            continue
+        for fpath in vault_dir.rglob("*.bak"):
+            if not fpath.is_file():
+                continue
+            if fpath.name.endswith(".bak.gz"):
+                continue
+            mtime = fpath.stat().st_mtime
+            if mtime > cutoff:
+                continue
+            if not dry_run:
+                try:
+                    gz_path = fpath.with_suffix(fpath.suffix + ".gz")
+                    data = fpath.read_bytes()
+                    with gz_mod.open(str(gz_path), "wb", compresslevel=6) as gzf:
+                        gzf.write(data)
+                    orig_size = len(data)
+                    gz_size = gz_path.stat().st_size
+                    if gz_size < orig_size:
+                        fpath.unlink()
+                        saved_bytes += (orig_size - gz_size)
+                    else:
+                        gz_path.unlink()  # compression didn't help
+                    compressed += 1
+                except Exception as e:
+                    logger.warning(f"Failed to compress {fpath}: {e}")
+            else:
+                compressed += 1
+
+    return {"compressed": compressed, "saved_bytes": saved_bytes, "dry_run": dry_run}
+
+
+@router.post("/api/backups/auto", response_model=BackupsAutoResponse)
+async def api_backups_auto(
+    body: dict = Body(...),
+    current_user=Depends(require_auth),
+):
+    """Create backups for files modified since a given time. Body: {since_hours: 24}"""
+    since_hours = body.get("since_hours", 24)
+    cutoff = time.time() - (since_hours * 3600)
+    backed_up = 0
+
+    for vault_name in index:
+        if not check_vault_access(vault_name, current_user):
+            continue
+        vd = get_vault_data(vault_name)
+        if not vd:
+            continue
+        vault_root = Path(vd["path"])
+        for fpath in vault_root.rglob("*"):
+            if not fpath.is_file():
+                continue
+            if fpath.name.startswith('.'):
+                continue
+            if any(p.startswith('.') or p in {'.obsidian', '.trash', '.git', '.obsigate-backup', '__pycache__', 'node_modules'} for p in fpath.relative_to(vault_root).parts):
+                continue
+            mtime = fpath.stat().st_mtime
+            if mtime < cutoff:
+                continue
+            try:
+                rel = str(fpath.relative_to(vault_root)).replace("\\", "/")
+                create_backup(fpath, vault_name, rel)
+                backed_up += 1
+            except Exception as e:
+                logger.warning(f"Auto-backup failed for {rel}: {e}")
+
+    return {"backed_up": backed_up, "since_hours": since_hours}
@@ -0,0 +1,531 @@
+"""Configuration, AI keys, diagnostics & dashboard endpoints (ROADMAP #85, tranche 7).
+
+Handlers déplacés depuis :mod:`backend.main` sans changement de
+comportement : mêmes chemins (``/api/config*``, ``/api/diagnostics``,
+``/api/dashboard``), mêmes modèles de réponse, mêmes dépendances
+d'authentification.
+
+Adaptations strictement équivalentes :
+- ``_load_config`` / ``_save_config`` / ``_DEFAULT_CONFIG`` /
+  ``_CONFIG_PATH`` / ``_BASE_DIR`` ont déménagé ici : ``main`` les
+  réimporte pour son lifespan (pas de cycle : ce module ne dépend pas de
+  ``main``).
+- ``AI_KEYS_FILE`` / ``_write_ai_keys`` / ``_FALLBACK_MODELS`` ont déménagé
+  ici (``AI_KEYS_FILE`` garde son chemin relatif ``data/api_keys.json``,
+  résolu depuis le même CWD au runtime).
+"""
+
+import json as _json
+import logging
+import os
+import urllib.request
+from pathlib import Path
+
+from fastapi import APIRouter, Body, Depends, HTTPException, Query
+
+from backend.ai import PROVIDERS, _read_ai_keys, get_ai_key
+from backend.auth.middleware import require_admin, require_auth
+from backend.indexer import index
+from backend.media_types import IMAGE_EXTENSIONS
+from backend.schemas import (
+    AIKeyDeleteResponse,
+    AIKeysResponse,
+    AIModelsResponse,
+    AITestResponse,
+    AppConfigResponse,
+    DashboardResponse,
+    DiagnosticsResponse,
+    StatusResponse,
+)
+from backend.search_executor import get_search_executor
+from backend.tools.secrets import (
+    TOOL_KEY_NAMES as _TOOL_KEY_NAMES,
+)
+from backend.tools.secrets import (
+    delete_tool_key as _delete_tool_key,
+)
+from backend.tools.secrets import (
+    get_tool_key as _get_tool_key,
+)
+from backend.tools.secrets import (
+    mask_value as _mask_tool_value,
+)
+from backend.tools.secrets import (
+    set_tool_key as _set_tool_key,
+)
+
+logger = logging.getLogger("obsigate")
+
+router = APIRouter(tags=["System"])
+
+_BASE_DIR = Path(__file__).resolve().parent.parent.parent
+_CONFIG_PATH = _BASE_DIR / "data" / "config.json"
+
+_DEFAULT_CONFIG = {
+    "search_workers": 2,
+    "debounce_ms": 300,
+    "results_per_page": 50,
+    "min_query_length": 2,
+    "search_timeout_ms": 30000,
+    "max_content_size": 100000,
+    "snippet_context_chars": 120,
+    "max_snippet_highlights": 5,
+    "title_boost": 3.0,
+    "path_boost": 1.5,
+    "watcher_enabled": True,
+    "watcher_use_polling": False,
+    "watcher_polling_interval": 5.0,
+    "watcher_debounce": 2.0,
+    "tag_boost": 2.0,
+    "prefix_max_expansions": 50,
+    "recent_files_limit": 20,
+    "max_backups_per_file": 10,
+    "ai_default_provider": "deepseek",
+    "ai_default_models": {},
+}
+
+
+def _load_config() -> dict:
+    """Load config from disk, merging with defaults."""
+    config = dict(_DEFAULT_CONFIG)
+    if _CONFIG_PATH.exists():
+        try:
+            stored = _json.loads(_CONFIG_PATH.read_text(encoding="utf-8"))
+            config.update(stored)
+        except Exception as e:
+            logger.warning(f"Failed to read config.json: {e}")
+    return config
+
+
+def _save_config(config: dict) -> None:
+    """Persist config to disk."""
+    try:
+        _CONFIG_PATH.write_text(
+            _json.dumps(config, indent=2, ensure_ascii=False),
+            encoding="utf-8",
+        )
+    except Exception as e:
+        logger.error(f"Failed to write config.json: {e}")
+        raise HTTPException(status_code=500, detail=f"Failed to save config: {e}")
+
+
+AI_KEYS_FILE = Path("data/api_keys.json")
+
+def _write_ai_keys(data: dict):
+    AI_KEYS_FILE.parent.mkdir(parents=True, exist_ok=True)
+    tmp = AI_KEYS_FILE.with_suffix(".tmp")
+    tmp.write_text(_json.dumps(data, indent=2), encoding="utf-8")
+    tmp.replace(AI_KEYS_FILE)
+
+@router.get("/api/config", response_model=AppConfigResponse)
+async def api_get_config(current_user=Depends(require_auth)):
+    """Return current configuration with defaults for missing keys."""
+    return _load_config()
+
+
+@router.post("/api/config", response_model=AppConfigResponse)
+async def api_set_config(body: dict = Body(...), current_user=Depends(require_admin)):
+    """Update configuration. Only known keys are accepted.
+
+    Keys matching ``_DEFAULT_CONFIG`` are validated and persisted.
+    Unknown keys are silently ignored.
+    Returns the full merged config after update.
+    """
+    current = _load_config()
+    updated_keys = []
+    for key, value in body.items():
+        if key in _DEFAULT_CONFIG:
+            expected_type = type(_DEFAULT_CONFIG[key])
+            if isinstance(value, expected_type) or (expected_type is float and isinstance(value, (int, float))):
+                current[key] = value
+                updated_keys.append(key)
+            else:
+                raise HTTPException(
+                    status_code=400,
+                    detail=f"Invalid type for '{key}': expected {expected_type.__name__}, got {type(value).__name__}",
+                )
+    _save_config(current)
+    if any(k.startswith("ai_") for k in updated_keys):
+        try:
+            from backend.ai import reload_ai_config
+            reload_ai_config()
+        except Exception as e:
+            logger.warning(f"Failed to reload AI config: {e}")
+    logger.info(f"Config updated: {updated_keys}")
+    return current
+
+
+@router.get("/api/config/ai-keys", response_model=AIKeysResponse)
+async def api_get_ai_keys(current_user=Depends(require_admin)):
+    """Return stored AI keys (values masked)."""
+    keys = _read_ai_keys()
+    masked = {}
+    for k in ["DEEPSEEK_API_KEY", "OPENROUTER_API_KEY", "GEMINI_API_KEY", "NVIDIA_API_KEY", "QWENCLOUD_API_KEY", "XIAOMI_API_KEY", "MISTRAL_API_KEY"]:
+        val = keys.get(k, "") or os.environ.get(k, "")
+        if val:
+            masked[k] = val[:4] + "..." + val[-4:] if len(val) > 8 else "***"
+        else:
+            masked[k] = ""
+    return masked
+
+@router.post("/api/config/ai-keys", response_model=StatusResponse)
+async def api_set_ai_keys(body: dict = Body(...), current_user=Depends(require_admin)):
+    """Save AI keys. Pass {"DEEPSEEK_API_KEY":"sk-...","OPENROUTER_API_KEY":"...","GEMINI_API_KEY":"..."}"""
+    keys = _read_ai_keys()
+    for k in ["DEEPSEEK_API_KEY", "OPENROUTER_API_KEY", "GEMINI_API_KEY", "NVIDIA_API_KEY", "QWENCLOUD_API_KEY", "XIAOMI_API_KEY", "MISTRAL_API_KEY"]:
+        if body.get(k):
+            keys[k] = body[k]
+    _write_ai_keys(keys)
+    logger.info("AI keys updated")
+    return {"status": "ok"}
+
+
+@router.delete("/api/config/ai-keys/{provider_env}", response_model=AIKeyDeleteResponse)
+async def api_delete_ai_key(provider_env: str, current_user=Depends(require_admin)):
+    """Delete a specific AI provider key from storage."""
+    allowed = {"DEEPSEEK_API_KEY", "OPENROUTER_API_KEY", "GEMINI_API_KEY",
+               "NVIDIA_API_KEY", "QWENCLOUD_API_KEY", "XIAOMI_API_KEY", "MISTRAL_API_KEY"}
+    key_name = provider_env.upper()
+    if key_name not in allowed:
+        raise HTTPException(status_code=400, detail=f"Clé inconnue: {provider_env}")
+    keys = _read_ai_keys()
+    if key_name in keys:
+        del keys[key_name]
+        _write_ai_keys(keys)
+    # Also clear from env at runtime so get_ai_key() no longer finds it
+    os.environ.pop(key_name, None)
+    logger.info(f"AI key deleted: {key_name}")
+    return {"status": "deleted", "key": key_name}
+
+
+@router.get("/api/config/tool-keys", response_model=AIKeysResponse)
+async def api_get_tool_keys(current_user=Depends(require_admin)):
+    """Return tool/connected-source configuration (tokens masked, URLs clear)."""
+    masked = {}
+    for name in _TOOL_KEY_NAMES:
+        masked[name] = _mask_tool_value(name, _get_tool_key(name))
+    return masked
+
+
+@router.post("/api/config/tool-keys", response_model=StatusResponse)
+async def api_set_tool_keys(body: dict = Body(...), current_user=Depends(require_admin)):
+    """Save tool/connected-source keys.
+
+    Only whitelisted names (``backend.tools.secrets.TOOL_KEY_NAMES``) are
+    accepted: Tavily/Brave/SerpAPI/Exa API keys, Gitea URL + token, GitHub
+    token. Empty values delete the stored entry.
+    """
+    updated = []
+    for name, value in body.items():
+        if name not in _TOOL_KEY_NAMES:
+            raise HTTPException(status_code=400, detail=f"Clé inconnue: {name}")
+        if value is not None and not isinstance(value, str):
+            raise HTTPException(status_code=400, detail=f"Type invalide pour {name}")
+        _set_tool_key(name, value or "")
+        updated.append(name)
+    logger.info(f"Tool keys updated: {updated}")
+    return {"status": "ok"}
+
+
+@router.delete("/api/config/tool-keys/{name}", response_model=AIKeyDeleteResponse)
+async def api_delete_tool_key(name: str, current_user=Depends(require_admin)):
+    """Delete a stored tool key (the environment fallback still applies)."""
+    key_name = name.upper()
+    try:
+        existed = _delete_tool_key(key_name)
+    except ValueError as e:
+        raise HTTPException(status_code=400, detail=str(e))
+    logger.info(f"Tool key deleted: {key_name} (existed={existed})")
+    return {"status": "deleted", "key": key_name}
+
+
+@router.post("/api/config/ai-keys/test", response_model=AITestResponse)
+async def api_test_ai_keys(current_user=Depends(require_admin)):
+    """Test which AI providers are configured.
+
+    Each provider has a dedicated (URL, header-name) test pair.
+    - Most OpenAI-compatible APIs use `Authorization: Bearer KEY`
+    - Xiaomi MiMo uses `api-key: KEY`
+    - Gemini uses a query-string key
+    """
+    results = {}
+    for key_name, label, test_url_tmpl, header_name in [
+        # OpenAI-compatible — Authorization: Bearer
+        ("DEEPSEEK_API_KEY",  "deepseek",   "https://api.deepseek.com/v1/models",                   "Authorization"),
+        ("OPENROUTER_API_KEY","openrouter", "https://openrouter.ai/api/v1/models",                   "Authorization"),
+        ("NVIDIA_API_KEY",    "nvidia",     "https://integrate.api.nvidia.com/v1/models",           "Authorization"),
+        ("QWENCLOUD_API_KEY", "qwencloud",  "https://dashscope.aliyuncs.com/compatible-mode/v1/models", "Authorization"),
+        ("MISTRAL_API_KEY",   "mistral",    "https://api.mistral.ai/v1/models",                     "Authorization"),
+        # Xiaomi MiMo — dedicated api-key header (NOT Authorization: Bearer)
+        ("XIAOMI_API_KEY",    "xiaomi",     "https://api.xiaomimimo.com/v1/models",                 "api-key"),
+        # Gemini — key in query string
+        ("GEMINI_API_KEY",    "gemini",     "https://generativelanguage.googleapis.com/v1beta/models?key={key}", None),
+    ]:
+        key = get_ai_key(key_name)
+        if not key:
+            results[label] = "non configuré"
+            continue
+        try:
+            url = test_url_tmpl.replace("{key}", key) if "{key}" in test_url_tmpl else test_url_tmpl
+            if header_name:
+                req = urllib.request.Request(url, headers={header_name: key})
+            else:
+                req = urllib.request.Request(url)
+            urllib.request.urlopen(req, timeout=5)
+            results[label] = "ok"
+        except Exception as e:
+            # Truncate the error to keep the response small.
+            results[label] = "erreur: " + str(e)[:80]
+    return results
+
+
+@router.get("/api/config/ai-models", response_model=AIModelsResponse)
+async def api_list_ai_models(provider: str = Query(...), current_user=Depends(require_admin)):
+    """List available models for a given AI provider.
+
+    Strategy:
+    1. Try the provider's public models endpoint (OpenAI-compatible /v1/models or Gemini).
+    2. If the network call fails (timeout, 4xx, 5xx, DNS, etc.), fall back to a
+       curated static list of known-good models for that provider.
+    3. Always return a non-empty list when the provider is known, so the UI
+       dropdown is never empty.
+    """
+    provider = provider.lower()
+
+    from backend.model_capabilities import get_capabilities_for_models
+    from backend.provider_capabilities import remember_declared_capabilities
+
+    all_providers = ("deepseek", "openrouter", "gemini", "nvidia", "qwencloud", "xiaomi", "mistral")
+    if provider not in all_providers:
+        return {"models": [], "error": f"Unknown provider: {provider}", "source": "validation"}
+
+    key_name = f"{provider.upper()}_API_KEY"
+    key = get_ai_key(key_name)
+    if not key:
+        # No key configured — return curated fallback list so the UI can
+        # still show what WOULD be available once a key is set.
+        fallback = _FALLBACK_MODELS.get(provider, [])
+        return {"models": fallback, "source": "fallback",
+                "capabilities": get_capabilities_for_models(provider, fallback),
+                "note": "API key not configured — showing default model list"}
+
+    # Build URL
+    if provider == "gemini":
+        url = f"https://generativelanguage.googleapis.com/v1beta/models?key={key}"
+    elif provider == "deepseek":
+        url = "https://api.deepseek.com/v1/models"
+    elif provider == "openrouter":
+        url = "https://openrouter.ai/api/v1/models"
+    elif provider == "nvidia":
+        url = "https://integrate.api.nvidia.com/v1/models"
+    elif provider == "qwencloud":
+        url = "https://dashscope.aliyuncs.com/compatible-mode/v1/models"
+    elif provider == "xiaomi":
+        # Xiaomi MiMo — dedicated api-key header (NOT Authorization: Bearer).
+        # Endpoint: https://api.xiaomimimo.com/v1/models
+        url = "https://api.xiaomimimo.com/v1/models"
+        models = []  # parsed below with the custom header
+    elif provider == "mistral":
+        url = "https://api.mistral.ai/v1/models"
+
+    try:
+        if provider == "gemini":
+            req = urllib.request.Request(url)
+        elif provider == "xiaomi":
+            # Xiaomi MiMo uses a dedicated api-key header.
+            req = urllib.request.Request(url, headers={"api-key": key})
+        else:
+            req = urllib.request.Request(url, headers={"Authorization": "Bearer " + key})
+
+        with urllib.request.urlopen(req, timeout=10) as resp:
+            data = _json.loads(resp.read().decode())
+
+        if provider == "gemini":
+            models = [m.get("name", "") for m in data.get("models", []) if m.get("name")]
+            # Gemini returns names like "models/gemini-1.5-flash" — strip prefix
+            models = [m.replace("models/", "") for m in models]
+        else:
+            models = [m.get("id", "") for m in data.get("data", []) if m.get("id")]
+
+        # Cache the capabilities the provider declares for these models
+        # (BUG-044) — get_capabilities_for_models() below then returns the
+        # provider's own truth for the flags it declares, the curated table
+        # for the rest. Providers that declare nothing are left untouched.
+        remember_declared_capabilities(provider, data)
+
+        if models:
+            # Prepend the configured default if not already present
+            default = PROVIDERS.get(provider, {}).get("model")
+            if default and default not in models:
+                models = [default] + models
+            return {"models": models, "source": "live", "count": len(models),
+                    "capabilities": get_capabilities_for_models(provider, models)}
+        # Empty list from API — fall through to fallback
+        raise ValueError("empty model list from provider API")
+    except Exception as e:
+        # Network error, auth error, parsing error — use curated fallback
+        fallback = _FALLBACK_MODELS.get(provider, [])
+        return {"models": fallback, "source": "fallback", "error": str(e)[:200],
+                "capabilities": get_capabilities_for_models(provider, fallback),
+                "note": "Could not reach provider API — showing default model list"}
+
+
+# ── Curated fallback model lists ──────────────────────────────────────────
+# Used when the provider API is unreachable or returns empty.
+# Keep these short and focused on models known to work with the
+# OpenAI-compatible chat completions interface (or Gemini's generateContent).
+_FALLBACK_MODELS: dict[str, list[str]] = {
+    "deepseek": [
+        "deepseek-chat",
+        "deepseek-reasoner",
+    ],
+    "openrouter": [
+        "openai/gpt-4o-mini",
+        "openai/gpt-4o",
+        "anthropic/claude-3.5-sonnet",
+        "anthropic/claude-3-haiku",
+        "google/gemini-2.0-flash-exp:free",
+        "meta-llama/llama-3.1-70b-instruct",
+        "meta-llama/llama-3.1-8b-instruct:free",
+        "mistralai/mistral-large-latest",
+    ],
+    "gemini": [
+        "gemini-2.0-flash",
+        "gemini-2.0-flash-exp",
+        "gemini-1.5-pro",
+        "gemini-1.5-flash",
+        "gemini-1.5-flash-8b",
+    ],
+    "nvidia": [
+        "meta/llama-3.1-405b-instruct",
+        "meta/llama-3.1-70b-instruct",
+        "meta/llama-3.1-8b-instruct",
+        "mistralai/mistral-large",
+        "google/gemma-2-27b-it",
+        "nvidia/llama-3.1-nemotron-70b-instruct",
+    ],
+    "qwencloud": [
+        "qwen-max",
+        "qwen-plus",
+        "qwen-turbo",
+        "qwen-long",
+        "qwen-vl-max",
+        "qwen-vl-plus",
+    ],
+    "xiaomi": [
+        # Xiaomi MiMo models — the public /v1/models endpoint requires the
+        # `api-key` custom header (NOT Authorization: Bearer), so the live
+        # call often fails with 401 even with the right key. We ship a
+        # known-good list as fallback. See https://mimo.mi.com/docs/
+        "mimo-v2.5-pro",
+        "mimo-v2.5",
+        "mimo-v2.5-asr",
+        "mimo-v2.5-tts",
+        "mimo-v2.5-tts-voiceclone",
+        "mimo-v2.5-tts-voicedesign",
+    ],
+    "mistral": [
+        "mistral-large-latest",
+        "mistral-medium-latest",
+        "mistral-small-latest",
+        "open-mistral-7b",
+        "open-mixtral-8x7b",
+        "codestral-latest",
+    ],
+}
+
+
+@router.get("/api/diagnostics", response_model=DiagnosticsResponse)
+async def api_diagnostics(current_user=Depends(require_admin)):
+    """Return index statistics and system diagnostics.
+
+    Includes document counts, token counts, memory estimates,
+    and inverted index status.
+    """
+    import sys
+
+    from backend.search import get_inverted_index
+
+    inv = get_inverted_index()
+
+    # Per-vault stats
+    vault_stats = {}
+    total_files = 0
+    total_tags = 0
+    # Snapshot both dicts first: the indexer mutates them from background
+    # threads, and iterating a live dict raises "dictionary changed size".
+    for vname, vdata in list(index.items()):
+        file_count = len(vdata.get("files", []))
+        tag_count = len(vdata.get("tags", {}))
+        vault_stats[vname] = {"file_count": file_count, "tag_count": tag_count}
+        total_files += file_count
+        total_tags += tag_count
+
+    # Memory estimate for inverted index
+    word_index = inv.word_index.copy()
+    word_index_entries = sum(len(docs) for docs in word_index.values())
+    mem_estimate_mb = round(
+        (sys.getsizeof(inv.word_index) + word_index_entries * 80
+         + len(inv.doc_info) * 200
+         + len(inv._sorted_tokens) * 60) / (1024 * 1024), 2
+    )
+
+    return {
+        "index": {
+            "total_files": total_files,
+            "total_tags": total_tags,
+            "vaults": vault_stats,
+        },
+        "inverted_index": {
+            "unique_tokens": len(word_index),
+            "total_postings": word_index_entries,
+            "documents": inv.doc_count,
+            "sorted_tokens": len(inv._sorted_tokens),
+            "is_stale": inv.is_stale(),
+            "memory_estimate_mb": mem_estimate_mb,
+        },
+        "config": _load_config(),
+        "search_executor": {
+            "active": get_search_executor() is not None,
+            "max_workers": get_search_executor()._max_workers if get_search_executor() else 0,
+        },
+    }
+
+
+@router.get("/api/dashboard", response_model=DashboardResponse)
+async def api_dashboard(current_user=Depends(require_auth)):
+    """Aggregated dashboard statistics across all accessible vaults."""
+    user_vaults = current_user.get("_token_vaults") or current_user.get("vaults", [])
+    vault_stats = []
+    total_files = 0
+    total_tags = set()
+    total_size = 0
+    total_images = 0
+    for vname, vdata in index.items():
+        if "*" not in user_vaults and vname not in user_vaults:
+            continue
+        files = vdata.get("files", [])
+        fc = len(files)
+        total_files += fc
+        vtags = set()
+        vsize = 0
+        vimages = 0
+        for f in files:
+            vtags.update(f.get("tags", []))
+            vsize += f.get("size", 0)
+            if (f.get("extension") or "").lower() in IMAGE_EXTENSIONS:
+                vimages += 1
+        total_tags.update(vtags)
+        total_size += vsize
+        total_images += vimages
+        vault_stats.append({
+            "name": vname, "file_count": fc, "tag_count": len(vtags),
+            "total_size_bytes": vsize, "image_count": vimages,
+        })
+    return {
+        "vaults": vault_stats,
+        "total_files": total_files,
+        "total_tags": len(total_tags),
+        "total_size_bytes": total_size,
+        "total_images": total_images,
+    }
@@ -0,0 +1,73 @@
+"""Syncthing conflict endpoints (ROADMAP #85, tranche 8).
+
+Handlers déplacés depuis :mod:`backend.main` sans changement de
+comportement : mêmes chemins (``/api/conflicts*``), mêmes modèles de
+réponse, mêmes dépendances d'authentification.
+
+Adaptations strictement équivalentes :
+- ``_resolve_safe_path`` / ``_backup_file`` → :mod:`backend.services.paths`
+  et :mod:`backend.services.backups` (pass-through).
+"""
+
+import logging
+import shutil
+from pathlib import Path
+
+from fastapi import APIRouter, Body, Depends, HTTPException
+
+from backend.audit import log_file_delete
+from backend.auth.middleware import check_vault_access, require_auth
+from backend.indexer import get_conflicts, get_vault_data, remove_single_file
+from backend.schemas import ConflictResolveResponse, ConflictsResponse
+from backend.services.backups import create_backup
+from backend.services.paths import resolve_safe_path
+from backend.sse import sse_manager
+
+logger = logging.getLogger("obsigate")
+
+router = APIRouter(tags=["conflicts"])
+
+
+@router.get("/api/conflicts", response_model=ConflictsResponse)
+async def api_conflicts(current_user=Depends(require_auth)):
+    """List sync-conflict files across accessible vaults."""
+    user_vaults = current_user.get("_token_vaults") or current_user.get("vaults", [])
+    all_conflicts = get_conflicts()
+    if "*" not in user_vaults:
+        all_conflicts = [c for c in all_conflicts if c["vault"] in user_vaults]
+    return {"conflicts": all_conflicts, "total": len(all_conflicts)}
+
+
+@router.post("/api/conflicts/resolve", response_model=ConflictResolveResponse)
+async def api_conflict_resolve(body: dict = Body(...), current_user=Depends(require_auth)):
+    """Resolve a conflict: keep_local (delete conflict file) or keep_conflict (replace original)."""
+    vault_name = body.get("vault")
+    conflict_path = body.get("conflict_path")
+    original_path = body.get("original_path")
+    action = body.get("action")  # "keep_local" or "keep_conflict"
+    # mypy: narrow down from dict values
+    assert isinstance(vault_name, str), "'vault' is required and must be a string"
+    assert isinstance(conflict_path, str), "'conflict_path' is required and must be a string"
+    assert isinstance(original_path, str), "'original_path' is required and must be a string"
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(403, f"Accès refusé à la vault '{vault_name}'")
+    vault_data = get_vault_data(vault_name)
+    if not vault_data:
+        raise HTTPException(404, "Vault not found")
+    vault_root = Path(vault_data["path"])
+    conf_file = resolve_safe_path(vault_root, conflict_path)
+    orig_file = resolve_safe_path(vault_root, original_path)
+    if not conf_file.exists():
+        raise HTTPException(404, "Conflict file not found")
+    try:
+        if action == "keep_conflict":
+            create_backup(orig_file, vault_name, original_path)
+            shutil.copy2(conf_file, orig_file)
+            logger.info(f"Conflict resolved (keep_conflict): {conflict_path} → {original_path}")
+        conf_file.unlink()
+        await remove_single_file(vault_name, conflict_path)
+        log_file_delete(current_user["username"], vault_name, conflict_path)
+        await sse_manager.broadcast("file_deleted", {"vault": vault_name, "path": conflict_path})
+        return {"status": "resolved", "action": action}
+    except Exception as e:
+        raise HTTPException(500, f"Error resolving conflict: {e!s}")
@@ -0,0 +1,569 @@
+"""Media, PDF, export & vault-settings endpoints (ROADMAP #85, tranche 6c).
+
+Handlers déplacés depuis :mod:`backend.main` sans changement de
+comportement : mêmes chemins (``/api/file/*/pdf*``, ``/api/export/*``,
+``/api/guide/download``, ``/api/image/*``, ``/api/media*``,
+``/api/attachments/*``, ``/api/vaults/*/settings``, ``/api/vault/*/files``,
+``/api/vaults/settings/all``), mêmes modèles de réponse, mêmes dépendances
+d'authentification.
+
+Adaptations strictement équivalentes :
+- ``_resolve_safe_path`` → :mod:`backend.services.paths` (pass-through).
+- ``_render_markdown`` vient de :mod:`backend.render` (#85 T9, sans cycle
+  d'import).
+- ``_resolve_export_target`` / ``_safe_export_name`` (export uniquement)
+  sont définis ici ; ``stream_file_with_range`` vit dans
+  :mod:`backend.routers.helpers` (partagé).
+"""
+
+import asyncio
+import logging
+from pathlib import Path
+
+from fastapi import APIRouter, Body, Depends, HTTPException, Query, Request
+from fastapi.responses import FileResponse, Response
+
+from backend.attachment_indexer import get_attachment_stats, rescan_vault_attachments
+from backend.auth.middleware import check_vault_access, require_admin, require_auth
+from backend.export import ExportError, export_epub, export_html, export_md_bundle
+from backend.history import record_open
+from backend.indexer import get_vault_data, index, parse_markdown_file
+from backend.media_thumbs import generate_thumbnail, is_decodable
+from backend.media_types import is_audio, is_image, is_video, media_mime_type
+from backend.render import _render_markdown
+from backend.routers.helpers import media_max_inline_bytes, stream_file_with_range
+from backend.schemas import (
+    AllVaultSettingsResponse,
+    AttachmentRescanResponse,
+    AttachmentStatsResponse,
+    PdfInfoResponse,
+    VaultFilesResponse,
+    VaultSettingsResponse,
+)
+from backend.secret_redactor import redact_file_content
+from backend.services.paths import resolve_safe_path
+from backend.services.vaults import list_all_files
+from backend.vault_settings import get_vault_setting, update_vault_setting
+
+logger = logging.getLogger("obsigate")
+
+# Lazy import: WeasyPrint PDF export (requires GTK, may not be available everywhere)
+try:
+    from backend.pdf_export import build_pdf_html, generate_pdf
+except Exception:  # pragma: no cover - WeasyPrint/GTK missing
+    generate_pdf = None  # type: ignore[assignment]
+    build_pdf_html = None  # type: ignore[assignment]
+
+    logging.getLogger("obsigate").warning("PDF export unavailable (WeasyPrint/GTK not found)")
+
+router = APIRouter()  # pas de tags : assignation par chemin via openapi_docs.tag_for_path (comme avant)
+
+
+def _resolve_export_target(vault_name: str, path: str, current_user: dict) -> tuple[Path, Path]:
+    """Resolve a vault + relative path into (vault_root, absolute file path).
+
+    Enforces auth (vault access) and path traversal protection.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+    vault_data = get_vault_data(vault_name)
+    if not vault_data:
+        raise HTTPException(status_code=404, detail=f"Vault '{vault_name}' not found")
+    vault_root = Path(vault_data["path"])
+    target = resolve_safe_path(vault_root, path)
+    return vault_root, target
+
+
+def _safe_export_name(name: str) -> str:
+    """ASCII-safe, filename-safe download name (falls back to 'document')."""
+    cleaned = "".join(c for c in name if c.isascii() and (c.isalnum() or c in " _-.")).strip()
+    return cleaned or "document"
+
+
+@router.get(
+    "/api/file/{vault_name}/pdf",
+    response_class=Response,
+    responses={200: {"content": {"application/pdf": {}}, "description": "PDF document"}},
+)
+async def api_file_pdf(vault_name: str, path: str = Query(..., description="Relative path to file"), current_user=Depends(require_auth)):
+    """Download a markdown file as PDF."""
+    if generate_pdf is None:
+        raise HTTPException(501, "PDF export unavailable (WeasyPrint/GTK not available)")
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(403, f"Accès refusé à la vault '{vault_name}'")
+    vault_data = get_vault_data(vault_name)
+    if not vault_data:
+        raise HTTPException(404, f"Vault '{vault_name}' not found")
+    vault_root = Path(vault_data["path"])
+    file_path = resolve_safe_path(vault_root, path)
+    if not file_path.exists():
+        raise HTTPException(404, f"File not found: {path}")
+    try:
+        raw = file_path.read_text(encoding="utf-8", errors="replace")
+    except Exception:
+        raise HTTPException(500, "Cannot read file")
+    record_open(current_user.get("username"), vault_name, path)
+    raw = redact_file_content(raw, str(file_path))
+    post = parse_markdown_file(raw)
+    html = _render_markdown(post.content, vault_name, file_path)
+    title = post.metadata.get("title", file_path.stem)
+    pdf_html = build_pdf_html(html, str(title))
+    pdf_bytes = generate_pdf(pdf_html, str(title))
+    safe_name = "".join(c for c in str(title) if c.isascii() and (c.isalnum() or c in " _-.")).strip() or "document"
+    return Response(content=pdf_bytes, media_type="application/pdf", headers={"Content-Disposition": f'attachment; filename="{safe_name}.pdf"'})
+
+
+@router.get(
+    "/api/export/html",
+    response_class=Response,
+    responses={200: {"content": {"text/html": {}}, "description": "Standalone HTML file"}},
+)
+async def api_export_html(
+    vault: str = Query(..., description="Vault name"),
+    path: str = Query(..., description="Relative path to file"),
+    current_user=Depends(require_auth),
+):
+    """Export a markdown note as a standalone HTML file."""
+    try:
+        vault_root, target = _resolve_export_target(vault, path, current_user)
+        html_bytes = export_html(vault_root, target)
+    except ExportError as e:
+        raise HTTPException(status_code=400, detail=str(e))
+    record_open(current_user.get("username"), vault, path)
+    safe_name = _safe_export_name(target.stem)
+    return Response(
+        content=html_bytes,
+        media_type="text/html; charset=utf-8",
+        headers={"Content-Disposition": f'attachment; filename="{safe_name}.html"'},
+    )
+
+
+@router.get(
+    "/api/export/md-bundle",
+    response_class=Response,
+    responses={200: {"content": {"application/zip": {}}, "description": "Markdown ZIP bundle"}},
+)
+async def api_export_md_bundle(
+    vault: str = Query(..., description="Vault name"),
+    path: str = Query(..., description="Relative path to directory or file"),
+    current_user=Depends(require_auth),
+):
+    """Export a directory (or single file) of markdown as a ZIP bundle."""
+    try:
+        vault_root, target = _resolve_export_target(vault, path, current_user)
+        zip_bytes = export_md_bundle(vault_root, target)
+    except ExportError as e:
+        raise HTTPException(status_code=400, detail=str(e))
+    safe_name = _safe_export_name(target.name)
+    return Response(
+        content=zip_bytes,
+        media_type="application/zip",
+        headers={"Content-Disposition": f'attachment; filename="{safe_name}.zip"'},
+    )
+
+
+@router.get(
+    "/api/export/epub",
+    response_class=Response,
+    responses={200: {"content": {"application/epub+zip": {}}, "description": "ePub document"}},
+)
+async def api_export_epub(
+    vault: str = Query(..., description="Vault name"),
+    path: str = Query(..., description="Relative path to file"),
+    current_user=Depends(require_auth),
+):
+    """Export a markdown note as an ePub document."""
+    try:
+        vault_root, target = _resolve_export_target(vault, path, current_user)
+        epub_bytes = export_epub(vault_root, target)
+    except ExportError as e:
+        raise HTTPException(status_code=400, detail=str(e))
+    record_open(current_user.get("username"), vault, path)
+    safe_name = _safe_export_name(target.stem)
+    return Response(
+        content=epub_bytes,
+        media_type="application/epub+zip",
+        headers={"Content-Disposition": f'attachment; filename="{safe_name}.epub"'},
+    )
+
+
+@router.get(
+    "/api/guide/download",
+    response_class=Response,
+    responses={200: {"content": {"application/pdf": {}, "text/markdown": {}}}},
+)
+async def api_guide_download(
+    format: str = Query("md", description="Download format: 'md' or 'pdf'"),
+    lang: str = Query("fr", description="Guide language: 'fr' or 'en'"),
+    current_user=Depends(require_auth),
+):
+    """Download the in-app user guide as Markdown or PDF (#105).
+
+    The document is generated from the live help modal in index.html resolved
+    through the locale files, so it always mirrors exactly what the user sees.
+    """
+    from backend.guide_export import get_guide_document
+
+    if format not in ("md", "pdf"):
+        raise HTTPException(status_code=400, detail="format doit être 'md' ou 'pdf'")
+    try:
+        payload, media, fname = get_guide_document(format, lang)
+    except Exception as e:  # weasyprint/reportlab unavailable
+        logger.exception("guide export failed")
+        raise HTTPException(status_code=500, detail=f"Export impossible: {e}") from e
+    return Response(
+        content=payload,
+        media_type=media,
+        headers={"Content-Disposition": f'attachment; filename="{fname}"'},
+    )
+
+
+@router.get("/api/file/{vault_name}/pdf/stream", response_class=FileResponse)
+async def api_pdf_stream(
+    request: Request,
+    vault_name: str,
+    path: str = Query(...),
+    current_user=Depends(require_auth),
+):
+    """Stream a PDF file with Content-Type: application/pdf for inline browser viewing.
+
+    Supports HTTP Range requests (206 Partial Content) so browsers can
+    progressively render large PDFs in the native viewer.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+    vault_data = get_vault_data(vault_name)
+    if not vault_data:
+        raise HTTPException(status_code=404, detail=f"Vault '{vault_name}' not found")
+    vault_root = Path(vault_data["path"])
+    file_path = resolve_safe_path(vault_root, path)
+    if not file_path.exists() or not file_path.is_file():
+        raise HTTPException(status_code=404, detail=f"File not found: {path}")
+    if file_path.suffix.lower() != ".pdf":
+        raise HTTPException(status_code=400, detail="Not a PDF file")
+
+    return stream_file_with_range(file_path, request, "application/pdf")
+
+
+@router.get("/api/file/{vault_name}/pdf/info", response_model=PdfInfoResponse)
+async def api_pdf_info(
+    vault_name: str,
+    path: str = Query(..., description="Relative path to PDF file"),
+    current_user=Depends(require_auth),
+):
+    """Return PDF metadata (pages, title, author, size) without the document content.
+
+    Lets the UI display file info before loading a heavy PDF into the viewer.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+    vault_data = get_vault_data(vault_name)
+    if not vault_data:
+        raise HTTPException(status_code=404, detail=f"Vault '{vault_name}' not found")
+    vault_root = Path(vault_data["path"])
+    file_path = resolve_safe_path(vault_root, path)
+    if not file_path.exists() or not file_path.is_file():
+        raise HTTPException(status_code=404, detail=f"File not found: {path}")
+    if file_path.suffix.lower() != ".pdf":
+        raise HTTPException(status_code=400, detail="Not a PDF file")
+
+    from backend.pdf_reader import extract_pdf_metadata
+    meta = extract_pdf_metadata(file_path)
+    stat = file_path.stat()
+    return {
+        "vault": vault_name,
+        "path": path,
+        "pages": meta.get("pages", 0),
+        "title": meta.get("title") or file_path.name,
+        "author": meta.get("author", ""),
+        "size_bytes": stat.st_size,
+    }
+
+
+@router.get(
+    "/api/image/{vault_name}",
+    response_class=Response,
+    responses={200: {"content": {"application/octet-stream": {}}, "description": "Image bytes"}},
+)
+async def api_image(vault_name: str, path: str = Query(..., description="Relative path to image"), current_user=Depends(require_auth)):
+    """Serve an image file with proper MIME type.
+
+    Args:
+        vault_name: Name of the vault.
+        path: Relative file path within the vault.
+
+    Returns:
+        Image file with appropriate content-type header.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+    vault_data = get_vault_data(vault_name)
+    if not vault_data:
+        raise HTTPException(status_code=404, detail=f"Vault '{vault_name}' not found")
+
+    vault_root = Path(vault_data["path"])
+    file_path = resolve_safe_path(vault_root, path)
+
+    if not file_path.exists() or not file_path.is_file():
+        raise HTTPException(status_code=404, detail=f"Image not found: {path}")
+
+    mime_type = media_mime_type(str(file_path))
+
+    # #108-B3 — a standalone SVG opened in a tab executes its embedded JS
+    # (same-origin XSS). ``sandbox`` forces a unique opaque origin with no
+    # script execution; inside an <img> tag the header is irrelevant.
+    headers = {"X-Content-Type-Options": "nosniff"}
+    if file_path.suffix.lower() == ".svg":
+        headers["Content-Security-Policy"] = "sandbox"
+
+    try:
+        # Read and return the image file
+        content = file_path.read_bytes()
+        return Response(content=content, media_type=mime_type, headers=headers)
+    except PermissionError:
+        raise HTTPException(status_code=403, detail="Permission denied")
+    except Exception as e:
+        logger.error(f"Error serving image {vault_name}/{path}: {e}")
+        raise HTTPException(status_code=500, detail=f"Error serving image: {e!s}")
+
+
+@router.get("/api/media/{vault_name}", response_class=FileResponse)
+async def api_media_stream(
+    request: Request,
+    vault_name: str,
+    path: str = Query(..., description="Relative path to audio/video file"),
+    current_user=Depends(require_auth),
+):
+    """Stream an audio/video file with HTTP Range support (roadmap #109-A2).
+
+    Serves the bytes with the correct MIME type and honours ``Range`` requests
+    (``206 Partial Content`` + ``Content-Range``/``Accept-Ranges``), which is
+    what enables scrubbing in ``<audio>``/``<video>`` and is required by Safari
+    for MP4. Files above ``OBSIGATE_MEDIA_MAX_INLINE_MB`` (default 500 MB) are
+    refused with ``413`` — the viewer falls back to the download button.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+    vault_data = get_vault_data(vault_name)
+    if not vault_data:
+        raise HTTPException(status_code=404, detail=f"Vault '{vault_name}' not found")
+
+    vault_root = Path(vault_data["path"])
+    file_path = resolve_safe_path(vault_root, path)
+    if not file_path.exists() or not file_path.is_file():
+        raise HTTPException(status_code=404, detail=f"Media not found: {path}")
+
+    ext = file_path.suffix.lower()
+    if not (is_audio(ext) or is_video(ext)):
+        raise HTTPException(status_code=400, detail="Not an audio/video file")
+
+    if file_path.stat().st_size > media_max_inline_bytes():
+        raise HTTPException(status_code=413, detail="Media too large for inline streaming")
+
+    return stream_file_with_range(file_path, request, media_mime_type(str(file_path)))
+
+
+@router.get("/api/media/{vault_name}/thumb", response_class=FileResponse)
+async def api_media_thumb(
+    vault_name: str,
+    path: str = Query(..., description="Relative path to image"),
+    size: int = Query(256, ge=32, le=1024, description="Max thumbnail edge in pixels"),
+    current_user=Depends(require_auth),
+):
+    """Serve a cached WebP thumbnail of an image (roadmap #108-C).
+
+    SVG (and any format Pillow cannot decode) falls back to the original
+    bytes. Generation runs in a thread and is capped at 2 s; on timeout or
+    failure the original is served so the UI never breaks.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+    vault_data = get_vault_data(vault_name)
+    if not vault_data:
+        raise HTTPException(status_code=404, detail=f"Vault '{vault_name}' not found")
+
+    vault_root = Path(vault_data["path"])
+    file_path = resolve_safe_path(vault_root, path)
+    if not file_path.exists() or not file_path.is_file():
+        raise HTTPException(status_code=404, detail=f"Image not found: {path}")
+    if not is_image(file_path.suffix.lower()):
+        raise HTTPException(status_code=400, detail="Not an image file")
+
+    mime_type = media_mime_type(str(file_path))
+    if not is_decodable(file_path):
+        # SVG: never let a standalone navigation execute embedded JS (#108-B3).
+        svg_headers = {"X-Content-Type-Options": "nosniff"}
+        if file_path.suffix.lower() == ".svg":
+            svg_headers["Content-Security-Policy"] = "sandbox"
+        return FileResponse(str(file_path), media_type=mime_type, headers=svg_headers)
+
+    loop = asyncio.get_running_loop()
+    thumb: Path | None = None
+    try:
+        thumb = await asyncio.wait_for(
+            loop.run_in_executor(None, generate_thumbnail, file_path, size),
+            timeout=2.0,
+        )
+    except Exception:
+        thumb = None
+
+    if thumb is not None and thumb.exists():
+        return FileResponse(str(thumb), media_type="image/webp")
+    return FileResponse(str(file_path), media_type=mime_type)
+
+
+@router.post("/api/attachments/rescan/{vault_name}", response_model=AttachmentRescanResponse)
+async def api_rescan_attachments(vault_name: str, current_user=Depends(require_admin)):
+    """Rescan attachments for a specific vault.
+
+    Args:
+        vault_name: Name of the vault to rescan.
+
+    Returns:
+        Dict with status and attachment count.
+    """
+    vault_data = get_vault_data(vault_name)
+    if not vault_data:
+        raise HTTPException(status_code=404, detail=f"Vault '{vault_name}' not found")
+
+    vault_path = vault_data["path"]
+    count = await rescan_vault_attachments(vault_name, vault_path)
+
+    logger.info(f"Rescanned attachments for vault '{vault_name}': {count} attachments")
+    return {"status": "ok", "vault": vault_name, "attachment_count": count}
+
+
+@router.get("/api/attachments/stats", response_model=AttachmentStatsResponse)
+async def api_attachment_stats(vault: str | None = Query(None, description="Vault filter"), current_user=Depends(require_auth)):
+    """Get attachment statistics for vaults.
+
+    Args:
+        vault: Optional vault name to filter stats.
+
+    Returns:
+        Dict with vault names as keys and attachment counts as values.
+    """
+    stats = get_attachment_stats(vault)
+    return {"vaults": stats}
+
+
+@router.get("/api/vaults/{vault_name}/settings", response_model=VaultSettingsResponse)
+async def api_get_vault_settings(vault_name: str, current_user=Depends(require_auth)):
+    """Get UI display settings for a specific vault.
+
+    Args:
+        vault_name: Name of the vault.
+
+    Returns:
+        Dict with vault settings including hideHiddenFiles.
+    """
+    if vault_name not in index:
+        raise HTTPException(status_code=404, detail=f"Vault '{vault_name}' not found")
+
+    # Get persisted settings
+    persisted = get_vault_setting(vault_name) or {}
+
+    # Default settings
+    settings = {
+        "hideHiddenFiles": False,
+    }
+    settings.update(persisted)
+
+    return settings
+
+
+@router.post("/api/vaults/{vault_name}/settings", response_model=VaultSettingsResponse)
+async def api_update_vault_settings(vault_name: str, body: dict = Body(...), current_user=Depends(require_admin)):
+    """Update UI display settings for a specific vault.
+
+    Args:
+        vault_name: Name of the vault.
+        body: Dict with settings to update (hideHiddenFiles).
+
+    Returns:
+        Updated settings dict.
+    """
+    if vault_name not in index:
+        raise HTTPException(status_code=404, detail=f"Vault '{vault_name}' not found")
+
+    # Validate settings
+    settings_to_update = {}
+
+    if "hideHiddenFiles" in body:
+        if not isinstance(body["hideHiddenFiles"], bool):
+            raise HTTPException(status_code=400, detail="hideHiddenFiles must be a boolean")
+        settings_to_update["hideHiddenFiles"] = body["hideHiddenFiles"]
+
+    # Update persisted settings
+    try:
+        updated = update_vault_setting(vault_name, settings_to_update)
+    except PermissionError as e:
+        logger.error(f"Permission error saving settings for vault '{vault_name}': {e}")
+        raise HTTPException(
+            status_code=500,
+            detail="Permission denied: Cannot write to settings file. Check /app/data permissions."
+        )
+    except Exception as e:
+        logger.error(f"Error saving settings for vault '{vault_name}': {e}")
+        raise HTTPException(
+            status_code=500,
+            detail=f"Failed to save settings: {e!s}"
+        )
+
+    logger.info(f"Updated settings for vault '{vault_name}': {settings_to_update}")
+
+    return updated
+
+
+@router.get("/api/vault/{vault_name}/files", response_model=VaultFilesResponse)
+async def api_vault_recent_files(
+    vault_name: str,
+    dir: str = Query("", description="Directory path within the vault (empty = root)"),
+    limit: int = Query(200, description="Maximum number of files to return"),
+    recursive: bool = Query(True, description="If true, list files recursively from directory and all subdirectories"),
+    current_user=Depends(require_auth),
+):
+    """List files in a vault directory sorted by modification time (newest first).
+
+    Returns file metadata suitable for a vault home page display.
+    Unlike /api/browse, this endpoint sorts by mtime and returns
+    additional metadata (size, modified time, extension).
+
+    When recursive=True (default), lists files from the directory
+    AND all its subdirectories, with a ``rel_dir`` field indicating
+    the subdirectory path relative to the requested directory.
+
+    Args:
+        vault_name: Name of the vault.
+        dir: Relative directory path within the vault (empty for root).
+        limit: Maximum files to return (default 200).
+        recursive: If true, recursively list files in subdirectories (default true).
+
+    Returns:
+        JSON with vault, directory, count, recursive flag, and list of file entries.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+
+    return list_all_files(vault_name, dir=dir, limit=limit, recursive=recursive)
+
+
+@router.get("/api/vaults/settings/all", response_model=AllVaultSettingsResponse)
+async def api_get_all_vault_settings(current_user=Depends(require_auth)):
+    """Get UI display settings for all vaults.
+
+    Returns:
+        Dict mapping vault names to their settings.
+    """
+    all_settings = {}
+
+    for vault_name in index:
+        persisted = get_vault_setting(vault_name) or {}
+
+        settings = {
+            "hideHiddenFiles": False,
+        }
+        settings.update(persisted)
+        all_settings[vault_name] = settings
+
+    return all_settings
@@ -0,0 +1,524 @@
+"""File browsing & reading endpoints (ROADMAP #85, tranche 6a).
+
+Handlers déplacés depuis :mod:`backend.main` sans changement de
+comportement : mêmes chemins (``/api/browse/*``, ``/api/file/*`` en
+lecture), mêmes modèles de réponse (déménagés dans
+:mod:`backend.schemas`), mêmes dépendances d'authentification.
+
+Adaptations strictement équivalentes :
+- ``_resolve_safe_path`` → :mod:`backend.services.paths` (pass-through).
+- ``_render_markdown`` vient de :mod:`backend.render` (#85 T9, sans cycle
+  d'import).
+- ``_content_disposition`` / ``_media_max_inline_bytes`` / ``EXT_TO_LANG``
+  ont déménagé : helpers partagés dans :mod:`backend.routers.helpers`
+  (``EXT_TO_LANG`` n'était utilisé que par la vue fichier).
+"""
+
+import html as html_mod
+import logging
+from pathlib import Path
+from urllib.parse import quote
+
+from fastapi import APIRouter, Depends, HTTPException, Query
+from fastapi.responses import FileResponse
+
+from backend.auth.middleware import check_vault_access, require_auth
+from backend.history import record_open
+from backend.indexer import (
+    _extract_tags,
+    get_backlinks,
+    get_vault_data,
+    parse_markdown_file,
+)
+from backend.media_types import is_audio, is_image, is_video, media_mime_type
+from backend.render import _render_markdown
+from backend.routers.helpers import media_max_inline_bytes
+from backend.schemas import (
+    BacklinksResponse,
+    BrowseResponse,
+    FileContentResponse,
+    FileRawResponse,
+)
+from backend.services.files import read_raw_file
+from backend.services.paths import resolve_safe_path
+from backend.services.vaults import browse_directory
+
+logger = logging.getLogger("obsigate")
+
+# Map file extensions to highlight.js language hints
+EXT_TO_LANG = {
+    ".py": "python", ".js": "javascript", ".ts": "typescript",
+    ".jsx": "jsx", ".tsx": "tsx", ".sh": "bash", ".bash": "bash",
+    ".zsh": "bash", ".fish": "fish", ".bat": "batch", ".cmd": "batch",
+    ".ps1": "powershell", ".json": "json", ".yaml": "yaml", ".yml": "yaml",
+    ".toml": "toml", ".xml": "xml", ".csv": "plaintext",
+    ".cfg": "ini", ".ini": "ini", ".conf": "ini", ".env": "bash",
+    ".html": "html", ".css": "css", ".scss": "scss", ".less": "less",
+    ".java": "java", ".c": "c", ".cpp": "cpp", ".h": "c", ".hpp": "cpp",
+    ".cs": "csharp", ".go": "go", ".rs": "rust", ".rb": "ruby",
+    ".php": "php", ".sql": "sql", ".r": "r", ".swift": "swift",
+    ".kt": "kotlin", ".txt": "plaintext", ".log": "plaintext",
+    ".lua": "lua", ".pl": "perl", ".pm": "perl", ".ex": "elixir", ".exs": "elixir",
+    ".dart": "dart", ".tf": "haskell", ".gradle": "groovy", ".groovy": "groovy",
+    ".graphql": "graphql", ".gql": "graphql", ".prisma": "sql", ".proto": "c",
+    ".vb": "basic", ".asm": "x86asm", ".s": "armasm",
+    ".vue": "xml", ".svelte": "xml", ".astro": "xml",
+    ".properties": "ini", ".service": "ini", ".hosts": "ini",
+    ".ksh": "bash", ".dockerfile": "dockerfile",
+    ".makefile": "makefile", ".cmake": "cmake",
+}
+
+router = APIRouter(tags=["files"])
+
+
+@router.get("/api/browse/{vault_name}", response_model=BrowseResponse)
+async def api_browse(vault_name: str, path: str = "", current_user=Depends(require_auth)):
+    """Browse directories and files in a vault at a given path level.
+
+    Returns sorted entries (directories first, then files) with metadata.
+    Hidden files/directories (starting with ``"."`` ) are excluded.
+
+    Args:
+        vault_name: Name of the vault to browse.
+        path: Relative directory path within the vault (empty = root).
+
+    Returns:
+        ``BrowseResponse`` with vault name, path, and item list.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+    return browse_directory(vault_name, path)
+
+
+@router.get("/api/file/{vault_name}/raw", response_model=FileRawResponse)
+async def api_file_raw(vault_name: str, path: str = Query(..., description="Relative path to file"), current_user=Depends(require_auth)):
+    """Return raw file content as plain text.
+
+    Args:
+        vault_name: Name of the vault.
+        path: Relative file path within the vault.
+
+    Returns:
+        ``FileRawResponse`` with vault, path, and raw text content.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+    return read_raw_file(vault_name, path)
+
+
+@router.get("/api/file/{vault_name}/download", response_class=FileResponse)
+async def api_file_download(vault_name: str, path: str = Query(..., description="Relative path to file"), current_user=Depends(require_auth)):
+    """Download a file as an attachment.
+
+    Args:
+        vault_name: Name of the vault.
+        path: Relative file path within the vault.
+
+    Returns:
+        ``FileResponse`` with ``application/octet-stream`` content-type.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+    vault_data = get_vault_data(vault_name)
+    if not vault_data:
+        raise HTTPException(status_code=404, detail=f"Vault '{vault_name}' not found")
+
+    vault_root = Path(vault_data["path"])
+    file_path = resolve_safe_path(vault_root, path)
+
+    if not file_path.exists() or not file_path.is_file():
+        raise HTTPException(status_code=404, detail=f"File not found: {path}")
+
+    # Record history
+    record_open(current_user.get("username"), vault_name, path)
+
+    return FileResponse(
+        path=str(file_path),
+        filename=file_path.name,
+        media_type="application/octet-stream",
+    )
+
+
+@router.get("/api/file/{vault_name}/backlinks", response_model=BacklinksResponse)
+async def api_file_backlinks(
+    vault_name: str,
+    path: str = Query(..., description="Relative path to file"),
+    current_user=Depends(require_auth),
+):
+    """Get backlinks (files linking to this file via wikilinks).
+
+    Returns a list of files that contain `[[wikilinks]]` pointing
+    to the requested file, across all accessible vaults.
+
+    Args:
+        vault_name: Name of the vault containing the target file.
+        path: Relative path of the target file within the vault.
+
+    Returns:
+        ``{"vault": str, "path": str, "backlinks": [...]}``
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+    vault_data = get_vault_data(vault_name)
+    if not vault_data:
+        raise HTTPException(status_code=404, detail=f"Vault '{vault_name}' not found")
+
+    user_vaults = current_user.get("_token_vaults") or current_user.get("vaults", [])
+    backlinks = get_backlinks(vault_name, path)
+
+    # Filter by user-accessible vaults
+    if "*" not in user_vaults:
+        backlinks = [b for b in backlinks if b["vault"] in user_vaults]
+
+    return {
+        "vault": vault_name,
+        "path": path,
+        "backlinks": backlinks,
+        "total": len(backlinks),
+    }
+
+
+@router.get("/api/file/{vault_name}", response_model=FileContentResponse)
+async def api_file(vault_name: str, path: str = Query(..., description="Relative path to file"), current_user=Depends(require_auth)):
+    """Return rendered HTML and metadata for a file.
+
+    Markdown files are parsed for frontmatter, rendered with wikilink
+    support, and returned with extracted tags. Other supported file
+    types are syntax-highlighted as code blocks.
+
+    Args:
+        vault_name: Name of the vault.
+        path: Relative file path within the vault.
+
+    Returns:
+        ``FileContentResponse`` with HTML, metadata, and tags.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+    vault_data = get_vault_data(vault_name)
+    if not vault_data:
+        raise HTTPException(status_code=404, detail=f"Vault '{vault_name}' not found")
+
+    vault_root = Path(vault_data["path"])
+    file_path = resolve_safe_path(vault_root, path)
+
+    if not file_path.exists() or not file_path.is_file():
+        raise HTTPException(status_code=404, detail=f"File not found: {path}")
+
+    # Record history
+    record_open(current_user.get("username"), vault_name, path, title=file_path.name)
+
+    ext = file_path.suffix.lower()
+
+    # === PDF: special handling before read_text (binary file) ===
+    if ext == ".pdf":
+        try:
+            from backend.pdf_reader import extract_pdf_metadata, extract_pdf_text, extract_pdf_toc
+            pdf_text = extract_pdf_text(file_path, max_chars=100000)
+            pdf_meta = extract_pdf_metadata(file_path)
+            pdf_toc = extract_pdf_toc(file_path)
+            size = file_path.stat().st_size
+            return {
+                "vault": vault_name,
+                "path": path,
+                "title": pdf_meta.get("title") or file_path.name,
+                "tags": [],
+                "frontmatter": {},
+                "html": f"<div class='pdf-viewer'><p>PDF — {pdf_meta.get('pages', '?')} pages</p><pre>{pdf_text[:5000]}</pre></div>",
+                "raw_length": size,
+                "extension": ext,
+                "is_markdown": False,
+                "is_pdf": True,
+                "unsupported": False,
+                "pdf_metadata": pdf_meta,
+                "pdf_toc": pdf_toc,
+                "size_bytes": size,
+            }
+        except Exception as e:
+            logger.error(f"PDF read error for {path}: {e}")
+            raise HTTPException(status_code=500, detail=f"Error reading PDF: {e!s}")
+
+    # === Excel .xlsx: render sheets as HTML tables (binary, before read_text) ===
+    if ext == ".xlsx":
+        try:
+            from backend.xlsx_reader import render_sheets
+
+            sheets = render_sheets(file_path)
+            size = file_path.stat().st_size
+            return {
+                "vault": vault_name,
+                "path": path,
+                "title": file_path.name,
+                "tags": [],
+                "frontmatter": {},
+                "html": sheets[0]["html"] if sheets else "",
+                "raw_length": size,
+                "extension": ext,
+                "is_markdown": False,
+                "is_xlsx": True,
+                "xlsx_sheets": sheets,
+                "unsupported": False,
+                "size_bytes": size,
+            }
+        except Exception as e:
+            logger.error(f"XLSX read error for {path}: {e}")
+            raise HTTPException(status_code=500, detail=f"Error reading XLSX: {e!s}")
+
+    # === Images: return as viewable image ===
+    if is_image(ext):
+        size = file_path.stat().st_size
+        mime = media_mime_type(str(file_path))
+        # #108-B1 — the raw endpoint returns JSON (FileRawResponse), so the
+        # standalone <img> must point to /api/image, which serves the bytes
+        # with the right MIME type. Paths are URL-encoded (accents, spaces).
+        img_url = f"/api/image/{quote(vault_name, safe='')}?path={quote(path, safe='')}"
+        html = (
+            f'<div class="image-viewer">'
+            f'<img src="{img_url}" '
+            f'alt="{html_mod.escape(file_path.name, quote=True)}" '
+            f'style="max-width:100%;max-height:80vh;object-fit:contain" />'
+            f'</div>'
+        )
+        return {
+            "vault": vault_name,
+            "path": path,
+            "title": file_path.name,
+            "tags": [],
+            "frontmatter": {},
+            "html": html,
+            "raw_length": size,
+            "extension": ext,
+            "is_markdown": False,
+            "is_image": True,
+            "image_mime": mime,
+            "size_bytes": size,
+        }
+
+    # === Audio / Video: HTML5 players streamed from /api/media (roadmap #109) ===
+    if is_audio(ext) or is_video(ext):
+        size = file_path.stat().st_size
+        mime = media_mime_type(str(file_path))
+        media_kind = "audio" if is_audio(ext) else "video"
+
+        # #109-A3 — beyond the inline limit the viewer falls back to download
+        # (a single uvicorn worker must not be pinned by multi-GB media).
+        if size > media_max_inline_bytes():
+            return {
+                "vault": vault_name,
+                "path": path,
+                "title": file_path.name,
+                "tags": [],
+                "frontmatter": {},
+                "html": "",
+                "raw_length": size,
+                "extension": ext,
+                "is_markdown": False,
+                "unsupported": True,
+                "media_too_large": True,
+                "size_bytes": size,
+            }
+
+        # #109-A2 — byte-range endpoint: enables scrub and is required by Safari.
+        stream_url = f"/api/media/{quote(vault_name, safe='')}?path={quote(path, safe='')}"
+        if media_kind == "audio":
+            html = (
+                f'<div class="audio-viewer">'
+                f'<audio controls preload="metadata" src="{stream_url}"></audio>'
+                f'</div>'
+            )
+        else:
+            html = (
+                f'<div class="video-viewer">'
+                f'<video controls playsinline preload="metadata" src="{stream_url}"></video>'
+                f'</div>'
+            )
+        return {
+            "vault": vault_name,
+            "path": path,
+            "title": file_path.name,
+            "tags": [],
+            "frontmatter": {},
+            "html": html,
+            "raw_length": size,
+            "extension": ext,
+            "is_markdown": False,
+            "is_audio": media_kind == "audio",
+            "is_video": media_kind == "video",
+            "media_mime": mime,
+            "stream_url": stream_url,
+            "size_bytes": size,
+        }
+
+    try:
+        raw = file_path.read_text(encoding="utf-8", errors="replace")
+    except PermissionError as e:
+        logger.error(f"Permission denied reading file {path}: {e}")
+        raise HTTPException(status_code=403, detail=f"Permission denied: cannot read file {path}")
+    except UnicodeDecodeError:
+        # Binary / unsupported file — return structured info with download option
+        size = file_path.stat().st_size
+        return {
+            "vault": vault_name,
+            "path": path,
+            "title": file_path.name,
+            "tags": [],
+            "frontmatter": {},
+            "html": "",
+            "raw_length": size,
+            "extension": ext,
+            "is_markdown": False,
+            "unsupported": True,
+            "size_bytes": size,
+        }
+    except Exception as e:
+        logger.error(f"Unexpected error reading file {path}: {e}")
+        raise HTTPException(status_code=500, detail=f"Error reading file: {e!s}")
+
+    # === CSV: render as HTML table ===
+    if ext == ".csv":
+        import csv
+        import io as csv_io
+        reader = csv.reader(csv_io.StringIO(raw))
+        rows = list(reader)
+        if not rows:
+            html = "<p><em>Fichier CSV vide</em></p>"
+        else:
+            headers = rows[0]
+            data_rows = rows[1:]
+            html = '<div class="csv-table-wrapper"><table class="csv-table"><thead><tr>'
+            for h in headers:
+                html += f"<th>{h}</th>"
+            html += "</tr></thead><tbody>"
+            for row in data_rows:
+                html += "<tr>"
+                for cell in row:
+                    html += f"<td>{cell}</td>"
+                html += "</tr>"
+            html += "</tbody></table></div>"
+        return {
+            "vault": vault_name, "path": path,
+            "title": file_path.name, "tags": [], "frontmatter": {},
+            "html": html, "raw_length": len(raw), "extension": ext,
+            "is_markdown": False, "is_csv": True,
+        }
+
+    # === JSON: syntax-highlighted display ===
+    if ext == ".json":
+        import json as json_mod
+        try:
+            parsed = json_mod.loads(raw)
+            formatted = json_mod.dumps(parsed, indent=2, ensure_ascii=False)
+        except json_mod.JSONDecodeError:
+            formatted = raw
+        html = f"<pre class='json-viewer'><code>{html_mod.escape(formatted)}</code></pre>"
+        return {
+            "vault": vault_name, "path": path,
+            "title": file_path.name, "tags": [], "frontmatter": {},
+            "html": html, "raw_length": len(raw), "extension": ext,
+            "is_markdown": False, "is_json": True,
+        }
+
+    # === Excalidraw .excalidraw.md (Obsidian plugin format) ===
+    if path.lower().endswith(".excalidraw.md"):
+        import re as re_mod
+        raw_lower = file_path.read_text(encoding="utf-8", errors="replace")
+        # Check for excalidraw-plugin in frontmatter or body
+        if "excalidraw-plugin:" in raw_lower:
+            # Extract compressed JSON block
+            match = re_mod.search(r'```compressed-json\n(.*?)\n```', raw_lower, re_mod.DOTALL)
+            if match:
+                compressed = match.group(1).strip()
+                return {
+                    "vault": vault_name, "path": path,
+                    "title": file_path.name.replace(".excalidraw.md", ""),
+                    "tags": [], "frontmatter": {},
+                    "html": "", "raw_length": len(raw_lower),
+                    "extension": ".excalidraw.md",
+                    "is_markdown": False,
+                    "is_excalidraw": True,
+                    "excalidraw_data_compressed": compressed,
+                }
+        # Fallback: treat as regular markdown
+        raw = raw_lower
+    if ext == ".excalidraw":
+        import json as json_mod
+        try:
+            parsed = json_mod.loads(raw)
+        except json_mod.JSONDecodeError:
+            parsed = None
+        if parsed and parsed.get("type") == "excalidraw":
+            return {
+                "vault": vault_name,
+                "path": path,
+                "title": parsed.get("appState", {}).get("name") or file_path.name,
+                "tags": [],
+                "frontmatter": {},
+                "html": "",
+                "raw_length": len(raw),
+                "extension": ext,
+                "is_markdown": False,
+                "is_excalidraw": True,
+                "excalidraw_data": {
+                    "elements": parsed.get("elements", []),
+                    "appState": parsed.get("appState", {}),
+                    "files": parsed.get("files", {}),
+                },
+            }
+        else:
+            # Not a valid Excalidraw file — fall through to text viewer
+            pass
+
+    # === Plain text / other readable files ===
+    TEXT_EXTENSIONS = {".txt", ".log", ".yml", ".yaml", ".toml", ".ini", ".cfg",
+                       ".sh", ".bash", ".py", ".js", ".ts", ".html", ".css",
+                       ".xml", ".rst", ".tex", ".sql", ".conf", ".env"}
+    if ext in TEXT_EXTENSIONS or ext == ".md":
+        pass  # handled below or by markdown section
+
+    if ext == ".md":
+        post = parse_markdown_file(raw)
+
+        # Extract metadata using shared indexer logic
+        tags = _extract_tags(post)
+
+        title = post.metadata.get("title", file_path.stem.replace("-", " ").replace("_", " "))
+        html_content = _render_markdown(post.content, vault_name, file_path)
+
+        return {
+            "vault": vault_name,
+            "path": path,
+            "title": str(title),
+            "tags": tags,
+            "frontmatter": dict(post.metadata) if post.metadata else {},
+            "html": html_content,
+            "raw_length": len(raw),
+            "extension": ext,
+            "is_markdown": True,
+        }
+    else:
+        # Non-markdown: wrap in syntax-highlighted code block
+        lang = EXT_TO_LANG.get(ext, "")
+        if not lang:
+            # Fichiers sans extension usuels (Dockerfile, Makefile, etc.)
+            NAME_TO_LANG = {
+                "dockerfile": "dockerfile", "makefile": "makefile",
+                "cmakelists.txt": "cmake", "jenkinsfile": "groovy",
+                "vagrantfile": "ruby", "rakefile": "ruby", "gemfile": "ruby",
+                "procfile": "plaintext", "bashrc": "bash", "bash_profile": "bash",
+                "zshrc": "bash", "profile": "bash", "gitignore": "plaintext",
+            }
+            lang = NAME_TO_LANG.get(file_path.name.lower(), "plaintext")
+        escaped = html_mod.escape(raw)
+        html_content = f'<pre><code class="language-{lang}">{escaped}</code></pre>'
+
+        return {
+            "vault": vault_name,
+            "path": path,
+            "title": file_path.name,
+            "tags": [],
+            "frontmatter": {},
+            "html": html_content,
+            "raw_length": len(raw),
+            "extension": ext,
+            "is_markdown": False,
+        }
@@ -0,0 +1,506 @@
+"""File & directory mutation endpoints (ROADMAP #85, tranche 6b).
+
+Handlers déplacés depuis :mod:`backend.main` sans changement de
+comportement : mêmes chemins (``PUT/DELETE/PATCH/POST /api/file/*``,
+``/api/directory/*``, ``/api/move/*``, ``/api/vault/*/batch-upload``),
+mêmes modèles de requête/réponse (déménagés dans :mod:`backend.schemas`),
+mêmes dépendances d'authentification et mêmes effets de bord (audit, index
+incrémental, SSE, webhooks, plugins, historique).
+
+La logique métier vit déjà dans :mod:`backend.services.mutations`.
+"""
+
+import logging
+from typing import Any
+
+from fastapi import APIRouter, Body, Depends, HTTPException, Query
+
+from backend.audit import log_file_delete, log_file_save
+from backend.auth.middleware import check_vault_access, require_auth
+from backend.history import (
+    remove_recent,
+    update_bookmarks_after_rename,
+    update_history_after_rename,
+)
+from backend.indexer import handle_file_move, remove_single_file, update_single_file
+from backend.schemas import (
+    BatchUploadRequest,
+    BatchUploadResponse,
+    DirectoryCreateRequest,
+    DirectoryCreateResponse,
+    DirectoryDeleteResponse,
+    DirectoryRenameRequest,
+    DirectoryRenameResponse,
+    FileCreateRequest,
+    FileCreateResponse,
+    FileDeleteResponse,
+    FileMoveRequest,
+    FileMoveResponse,
+    FileRenameRequest,
+    FileRenameResponse,
+    FileSaveResponse,
+)
+from backend.services.mutations import (
+    batch_upload_files as service_batch_upload_files,
+)
+from backend.services.mutations import (
+    create_directory as service_create_directory,
+)
+from backend.services.mutations import (
+    create_file as service_create_file,
+)
+from backend.services.mutations import (
+    delete_directory as service_delete_directory,
+)
+from backend.services.mutations import (
+    delete_file as service_delete_file,
+)
+from backend.services.mutations import (
+    edit_file as service_edit_file,
+)
+from backend.services.mutations import (
+    edit_xlsx_cells as service_edit_xlsx_cells,
+)
+from backend.services.mutations import (
+    move_path as service_move_path,
+)
+from backend.services.mutations import (
+    rename_directory as service_rename_directory,
+)
+from backend.services.mutations import (
+    rename_file as service_rename_file,
+)
+from backend.share import update_shares_after_rename
+from backend.sse import sse_manager
+from backend.webhooks import dispatch_webhooks
+
+logger = logging.getLogger("obsigate")
+
+router = APIRouter(tags=["files"])
+
+
+@router.put("/api/file/{vault_name}/save", response_model=FileSaveResponse)
+async def api_file_save(
+    vault_name: str,
+    path: str = Query(..., description="Relative path to file"),
+    body: dict = Body(...),
+    backup: bool = Query(True, description="Create a backup before saving (default true, set false for auto-save)"),
+    current_user=Depends(require_auth),
+):
+    """Save (overwrite) a file's content.
+
+    Expects a JSON body with a ``content`` key containing the new text.
+    The path is validated against traversal attacks before writing.
+
+    Args:
+        vault_name: Name of the vault.
+        path: Relative file path within the vault.
+        body: JSON body with ``content`` string.
+
+    Returns:
+        ``FileSaveResponse`` confirming the write.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+
+    content = body.get("content", "")
+    result = service_edit_file(vault_name, path, content, backup=backup)
+
+    # Audit log
+    client_ip = current_user.get("_request_ip", "unknown")
+    log_file_save(current_user["username"], vault_name, path, len(content), client_ip)
+
+    return {"status": "ok", "vault": result["vault"], "path": result["path"], "size": result["size"]}
+
+
+@router.put("/api/file/{vault_name}/xlsx/save", response_model=FileSaveResponse)
+async def api_file_xlsx_save(
+    vault_name: str,
+    path: str = Query(..., description="Relative path to the .xlsx file"),
+    body: dict = Body(..., description='{"sheet": str, "cells": {"A1": value}}'),
+    current_user=Depends(require_auth),
+):
+    """Apply cell edits to an .xlsx workbook.
+
+    Expects a JSON body with ``sheet`` and ``cells`` (A1 references to new
+    scalar values, max 500 per request). A backup is created before the
+    workbook is rewritten.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+
+    sheet = body.get("sheet")
+    cells = body.get("cells")
+    if not isinstance(sheet, str) or not sheet:
+        raise HTTPException(status_code=400, detail="Feuille manquante")
+    if not isinstance(cells, dict) or not cells or len(cells) > 500:
+        raise HTTPException(status_code=400, detail="Cellules invalides (1 à 500 par requête)")
+    for ref, value in cells.items():
+        if not isinstance(ref, str) or not isinstance(value, (str, int, float, bool, type(None))):
+            raise HTTPException(status_code=400, detail=f"Cellule invalide: {ref!r}")
+
+    result = service_edit_xlsx_cells(vault_name, path, sheet, cells)
+    log_file_save(
+        current_user["username"], vault_name, path,
+        sum(len(str(v)) for v in cells.values()),
+        current_user.get("_request_ip", "unknown"),
+    )
+    return {"status": "ok", "vault": result["vault"], "path": result["path"], "size": result["size"]}
+
+
+@router.delete("/api/file/{vault_name}", response_model=FileDeleteResponse)
+async def api_file_delete(vault_name: str, path: str = Query(..., description="Relative path to file"), current_user=Depends(require_auth)):
+    """Delete a file from the vault.
+
+    The path is validated against traversal attacks before deletion.
+
+    Args:
+        vault_name: Name of the vault.
+        path: Relative file path within the vault.
+
+    Returns:
+        ``FileDeleteResponse`` confirming the deletion.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+
+    result = service_delete_file(vault_name, path)
+
+    # Audit log
+    client_ip = current_user.get("_request_ip", "unknown")
+    log_file_delete(current_user["username"], vault_name, path, client_ip)
+
+    # Update index
+    await remove_single_file(vault_name, path)
+
+    # Broadcast SSE event
+    await sse_manager.broadcast("file_deleted", {
+        "vault": vault_name,
+        "path": path,
+    })
+
+    from backend.plugins import emit_file_deleted
+    emit_file_deleted(vault_name, path)
+
+    # Remove from recent files
+    remove_recent(current_user["username"], vault_name, path)
+
+    # Dispatch webhooks
+    await dispatch_webhooks("file_deleted", {"vault": vault_name, "path": path})
+
+    return {"status": "ok", "vault": result["vault"], "path": result["path"]}
+
+
+@router.post("/api/directory/{vault_name}", response_model=DirectoryCreateResponse)
+async def api_directory_create(
+    vault_name: str,
+    body: DirectoryCreateRequest,
+    current_user=Depends(require_auth),
+):
+    """Create a new directory in a vault.
+
+    Args:
+        vault_name: Name of the vault.
+        body: Request body with directory path.
+
+    Returns:
+        DirectoryCreateResponse confirming creation.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+
+    result = service_create_directory(vault_name, body.path)
+
+    # Update path_index with the new directory
+    from backend.indexer import _index_lock
+    from backend.indexer import path_index as _path_idx
+    with _index_lock:
+        if vault_name not in _path_idx:
+            _path_idx[vault_name] = []
+        existing = {p["path"] for p in _path_idx[vault_name]}
+        # Build all parent segments
+        parts = body.path.split("/")
+        for i in range(1, len(parts) + 1):
+            seg_path = "/".join(parts[:i])
+            if seg_path and seg_path not in existing:
+                existing.add(seg_path)
+                _path_idx[vault_name].append({
+                    "path": seg_path,
+                    "name": parts[i - 1],
+                    "type": "directory",
+                })
+
+    # Broadcast SSE event
+    await sse_manager.broadcast("directory_created", {
+        "vault": vault_name,
+        "path": result["path"],
+    })
+    await dispatch_webhooks("directory_created", {"vault": vault_name, "path": result["path"]})
+
+    return {"success": True, "path": result["path"]}
+
+
+@router.patch("/api/directory/{vault_name}", response_model=DirectoryRenameResponse)
+async def api_directory_rename(
+    vault_name: str,
+    body: DirectoryRenameRequest,
+    current_user=Depends(require_auth),
+):
+    """Rename a directory in a vault.
+
+    Args:
+        vault_name: Name of the vault.
+        body: Request body with current path and new name.
+
+    Returns:
+        DirectoryRenameResponse with old and new paths.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+
+    result = service_rename_directory(vault_name, body.path, body.new_name)
+    old_path_str = result["old_path"]
+    new_path_str = result["new_path"]
+
+    # Update index for all files in the directory
+    from backend.indexer import reload_single_vault
+    await reload_single_vault(vault_name)
+
+    # Broadcast SSE event
+    await sse_manager.broadcast("directory_renamed", {
+        "vault": vault_name,
+        "old_path": old_path_str,
+        "new_path": new_path_str,
+    })
+    await dispatch_webhooks("directory_renamed", {"vault": vault_name, "old_path": old_path_str, "new_path": new_path_str})
+
+    return {"success": True, "old_path": old_path_str, "new_path": new_path_str}
+
+
+@router.delete("/api/directory/{vault_name}", response_model=DirectoryDeleteResponse)
+async def api_directory_delete(
+    vault_name: str,
+    path: str = Query(..., description="Relative path to directory"),
+    current_user=Depends(require_auth),
+):
+    """Delete a directory and all its contents from a vault.
+
+    Args:
+        vault_name: Name of the vault.
+        path: Relative directory path within the vault.
+
+    Returns:
+        DirectoryDeleteResponse with count of deleted files.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+
+    result = service_delete_directory(vault_name, path, recursive=True)
+    file_count = result["deleted_count"]
+
+    # Update index
+    from backend.indexer import reload_single_vault
+    await reload_single_vault(vault_name)
+
+    # Broadcast SSE event
+    await sse_manager.broadcast("directory_deleted", {
+        "vault": vault_name,
+        "path": result["path"],
+        "deleted_count": file_count,
+    })
+    await dispatch_webhooks("directory_deleted", {"vault": vault_name, "path": result["path"]})
+
+    return {"success": True, "deleted_count": file_count}
+
+
+@router.post("/api/file/{vault_name}", response_model=FileCreateResponse)
+async def api_file_create(
+    vault_name: str,
+    body: FileCreateRequest,
+    current_user=Depends(require_auth),
+):
+    """Create a new file in a vault.
+
+    Args:
+        vault_name: Name of the vault.
+        body: Request body with file path and initial content.
+
+    Returns:
+        FileCreateResponse confirming creation.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+
+    result = service_create_file(vault_name, body.path, body.content)
+
+    # Update index
+    await update_single_file(vault_name, result["path"])
+
+    # Broadcast SSE event
+    await sse_manager.broadcast("file_created", {
+        "vault": vault_name,
+        "path": result["path"],
+    })
+    await dispatch_webhooks("file_created", {"vault": vault_name, "path": result["path"]})
+    from backend.plugins import emit_file_created
+    emit_file_created(vault_name, result["path"])
+
+    return {"success": True, "path": result["path"]}
+
+
+@router.post("/api/vault/{vault_name}/batch-upload", response_model=BatchUploadResponse)
+async def api_batch_upload(
+    vault_name: str,
+    body: BatchUploadRequest,
+    current_user=Depends(require_auth),
+):
+    """Upload multiple files and directories (recursively) into a vault.
+
+    Accepts base64 encoded or plain text files with relative directory paths.
+    Creates missing parent folders safely.
+
+    Args:
+        vault_name: Target vault name.
+        body: BatchUploadRequest with target_dir and files list.
+
+    Returns:
+        BatchUploadResponse with summary of uploaded files and errors.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+
+    import base64
+
+    items: list[dict[str, Any]] = []
+    for f in body.files:
+        if f.is_dir:
+            items.append({"path": f.path, "is_dir": True})
+            continue
+
+        raw_bytes = b""
+        if f.content is not None:
+            # Check if content is base64 encoded data URI or raw base64
+            content_str = f.content
+            if content_str.startswith("data:") and ";base64," in content_str:
+                content_str = content_str.split(";base64,", 1)[1]
+            try:
+                raw_bytes = base64.b64decode(content_str)
+            except Exception:
+                # Fallback to utf-8 text encoding
+                raw_bytes = f.content.encode("utf-8")
+
+        items.append({"path": f.path, "content": raw_bytes, "is_dir": False})
+
+    result = service_batch_upload_files(
+        vault_name,
+        body.target_dir,
+        items,
+        overwrite=body.overwrite,
+    )
+
+    # Update index and SSE notifications for uploaded files
+    for path in result["uploaded"]:
+        try:
+            await update_single_file(vault_name, path)
+            await sse_manager.broadcast("file_created", {
+                "vault": vault_name,
+                "path": path,
+            })
+            await dispatch_webhooks("file_created", {"vault": vault_name, "path": path})
+        except Exception as e:
+            logger.warning(f"Failed to post-process upload of {path}: {e}")
+
+    # SSE notification for tree refresh
+    if result["uploaded"] or result["created_dirs"]:
+        await sse_manager.broadcast("tree_updated", {
+            "vault": vault_name,
+            "target_dir": result["target_dir"],
+        })
+
+    return result
+
+
+@router.patch("/api/file/{vault_name}", response_model=FileRenameResponse)
+async def api_file_rename(
+    vault_name: str,
+    body: FileRenameRequest,
+    current_user=Depends(require_auth),
+):
+    """Rename a file in a vault.
+
+    Args:
+        vault_name: Name of the vault.
+        body: Request body with current path and new name.
+
+    Returns:
+        FileRenameResponse with old and new paths.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+
+    result = service_rename_file(vault_name, body.path, body.new_name)
+    old_path_str = result["old_path"]
+    new_path_str = result["new_path"]
+
+    # Update index
+    await handle_file_move(vault_name, old_path_str, new_path_str)
+
+    # Update bookmarks, history, and shares
+    update_bookmarks_after_rename(vault_name, old_path_str, new_path_str)
+    update_history_after_rename(vault_name, old_path_str, new_path_str)
+    update_shares_after_rename(vault_name, old_path_str, new_path_str)
+
+    # Broadcast SSE event
+    await sse_manager.broadcast("file_renamed", {
+        "vault": vault_name,
+        "old_path": old_path_str,
+        "new_path": new_path_str,
+    })
+    await dispatch_webhooks("file_renamed", {"vault": vault_name, "old_path": old_path_str, "new_path": new_path_str})
+
+    return {"success": True, "old_path": old_path_str, "new_path": new_path_str}
+
+
+@router.post("/api/move/{vault_name}", response_model=FileMoveResponse)
+async def api_file_move(
+    vault_name: str,
+    body: FileMoveRequest,
+    current_user=Depends(require_auth),
+):
+    """Move a file or directory to a different parent directory within the same vault.
+
+    Supports both files and directories. The item keeps its original name;
+    only the parent directory changes.
+
+    Args:
+        vault_name: Name of the vault.
+        body: Request body with source_path and destination_dir.
+
+    Returns:
+        FileMoveResponse with old and new paths.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+
+    result = service_move_path(vault_name, body.source_path, body.destination_dir)
+    old_path_str = result["old_path"]
+    new_path_str = result["new_path"]
+    item_type = result["item_type"]
+
+    # Update index
+    if item_type == "directory":
+        from backend.indexer import reload_single_vault
+        await reload_single_vault(vault_name)
+    else:
+        await handle_file_move(vault_name, old_path_str, new_path_str)
+
+    # Broadcast SSE event
+    await sse_manager.broadcast("item_moved", {
+        "vault": vault_name,
+        "old_path": old_path_str,
+        "new_path": new_path_str,
+        "item_type": item_type,
+    })
+    await dispatch_webhooks("item_moved", {"vault": vault_name, "old_path": old_path_str, "new_path": new_path_str, "item_type": item_type})
+
+    return {"success": True, "old_path": old_path_str, "new_path": new_path_str, "item_type": item_type}
@@ -0,0 +1,143 @@
+"""System health endpoints (ROADMAP #85, tranche 1).
+
+Handlers déplacés depuis :mod:`backend.main` sans changement de
+comportement : mêmes chemins (``/api/health``, ``/api/health/detailed``),
+même ``response_model`` (:class:`backend.schemas.HealthResponse`), même
+dépendance admin. Seule différence : la version est lue via
+:func:`backend.version.get_version` au lieu de ``app.version`` (valeur
+identique, figée au démarrage depuis le fichier ``VERSION``).
+
+Note : ``uptime_seconds`` reprend l'expression d'origine
+(``'_SERVER_START_TIME' in globals()``), qui vaut toujours 0 — le global
+n'est défini nulle part dans ``backend.main`` (voir ``backend.admin`` qui
+possède son propre compteur). Ce comportement est préservé tel quel ; le
+corriger fera l'objet d'une tranche ultérieure avec test dédié.
+"""
+
+from fastapi import APIRouter, Depends
+
+from backend.auth.middleware import require_admin
+from backend.indexer import index
+from backend.schemas import HealthResponse
+from backend.version import get_git_commit, get_git_describe, get_version
+
+router = APIRouter(tags=["System"])
+
+
+@router.get("/api/health", response_model=HealthResponse)
+async def api_health():
+    """Health check endpoint for Docker and monitoring.
+
+    Returns:
+        Application status, version, vault count and total file count.
+    """
+    total_files = sum(len(v["files"]) for v in index.values())
+    total_tokens = sum(len(v.get("files", [])) * 1000 for v in index.values())  # rough approx
+    import time
+
+    from backend.indexer import _last_full_index_ts
+    # `_SERVER_START_TIME` n'existe dans aucun module (comportement d'origine
+    # préservé : uptime toujours 0 — voir docstring du module).
+    uptime = int(time.time() - _SERVER_START_TIME) if '_SERVER_START_TIME' in globals() else 0  # noqa: F821
+    return {
+        "status": "ok",
+        "version": get_version(),
+        "vaults": len(index),
+        "total_files": total_files,
+        "total_tokens": total_tokens,
+        "last_full_index_ts": _last_full_index_ts,
+        "uptime_seconds": uptime,
+        "git_describe": get_git_describe(),
+        "git_commit": get_git_commit(),
+    }
+
+
+@router.get("/api/health/detailed", response_model=HealthResponse)
+async def api_health_detailed(current_user=Depends(require_admin)):
+    """Detailed health check — admin only.
+
+    Returns enriched metrics including memory, disk, SSE connections, and backup stats.
+    """
+
+    import psutil
+
+    from backend.admin import _count_active_sessions, _get_disk_stats
+    from backend.indexer import _last_full_index_ts, index
+
+    total_files = sum(len(v["files"]) for v in index.values())
+    total_tokens = sum(len(v.get("files", [])) * 1000 for v in index.values())
+    import time
+    uptime = int(time.time() - _SERVER_START_TIME) if '_SERVER_START_TIME' in globals() else 0  # noqa: F821 — voir ci-dessus
+
+    # Memory
+    vm = psutil.virtual_memory()
+    mem_used_mb = round(vm.used / (1024 ** 2), 1)
+    mem_total_mb = round(vm.total / (1024 ** 2), 1)
+    mem_pct = round(vm.percent, 1)
+
+    # CPU
+    cpu_pct = psutil.cpu_percent(interval=None)
+
+    # Disk
+    disk_used_gb, disk_total_gb = _get_disk_stats()
+    disk_free_gb = round(disk_total_gb - disk_used_gb, 2)
+    disk_pct = round((disk_used_gb / disk_total_gb * 100) if disk_total_gb > 0 else 0, 1)
+
+    # SSE connections (approximation)
+    active_sessions = _count_active_sessions()
+
+    # Backups
+    from backend.admin import _scan_backups
+    backup_rows = _scan_backups()
+    total_backups = len(backup_rows)
+    total_backup_size_mb = round(sum(r["size"] for r in backup_rows) / (1024 ** 2), 2)
+    oldest_backup_age_days = 0.0
+    if backup_rows:
+        now_ts = int(time.time())
+        oldest_ts = min(r["timestamp"] for r in backup_rows)
+        oldest_backup_age_days = round((now_ts - oldest_ts) / 86400, 2)
+
+    # Index details
+    index_detail = {}
+    for name, data in index.items():
+        index_detail[name] = {
+            "file_count": len(data["files"]),
+            "tag_count": len(data.get("tags", [])),
+            "token_count_approx": len(data.get("files", [])) * 1000,
+        }
+
+    return {
+        "status": "ok",
+        "version": get_version(),
+        "vaults": len(index),
+        "total_files": total_files,
+        "total_tokens": total_tokens,
+        "last_full_index_ts": _last_full_index_ts,
+        "uptime_seconds": uptime,
+        "git_describe": get_git_describe(),
+        "git_commit": get_git_commit(),
+        # Enriched fields
+        "memory": {
+            "used_mb": mem_used_mb,
+            "total_mb": mem_total_mb,
+            "percent": mem_pct,
+        },
+        "cpu": {
+            "percent": cpu_pct,
+        },
+        "disk": {
+            "used_gb": disk_used_gb,
+            "total_gb": disk_total_gb,
+            "free_gb": disk_free_gb,
+            "percent": disk_pct,
+        },
+        "connections": {
+            "active_sse": active_sessions,
+        },
+        "backups": {
+            "total_count": total_backups,
+            "total_size_mb": total_backup_size_mb,
+            "oldest_age_days": oldest_backup_age_days,
+        },
+        "index": index_detail,
+    }
@@ -0,0 +1,129 @@
+"""Shared helpers for the file routers (ROADMAP #85, tranche 6a).
+
+Petites fonctions pures extraites de :mod:`backend.main` sans changement
+de comportement. Regroupées ici car utilisées par plusieurs routers
+(``files_read`` aujourd'hui, ``files_media`` / mutations ensuite) :
+- :func:`content_disposition` — aussi utilisée par ``_stream_file_with_range``
+  (resté dans ``main`` jusqu'à la tranche media).
+- :func:`media_max_inline_bytes` — aussi utilisée par ``/api/media``.
+"""
+
+from __future__ import annotations
+
+import asyncio
+import os
+import re
+from pathlib import Path
+
+from fastapi import HTTPException, Request
+from fastapi.responses import FileResponse, StreamingResponse
+
+
+def content_disposition(disposition: str, filename: str) -> str:
+    """Build a header-safe Content-Disposition value.
+
+    HTTP header values must be ASCII. Unicode filenames are sent per
+    RFC 5987 via ``filename*`` (percent-encoded UTF-8) with a pure-ASCII
+    ``filename`` fallback. This avoids a UnicodeDecodeError / HTTP 500 when
+    the filename contains accented characters (e.g. 'Bière blonde…pdf').
+    """
+    from urllib.parse import quote
+    ascii_name = "".join(c for c in filename if c.isascii() and (c.isalnum() or c in " _-.")).strip() or "file"
+    ext = Path(filename).suffix
+    if ext and not Path(ascii_name).suffix:
+        ascii_name = ascii_name + ext
+    return f"{disposition}; filename=\"{ascii_name}\"; filename*=UTF-8''{quote(filename)}"
+
+
+def media_max_inline_bytes() -> int:
+    """Maximum size (bytes) for inline audio/video playback (roadmap #109-A3).
+
+    Configurable via ``OBSIGATE_MEDIA_MAX_INLINE_MB`` (default 500 MB). Files
+    above the limit are not streamed in the viewer (the UI falls back to the
+    download button), which keeps a single uvicorn worker from being pinned by
+    multi-gigabyte media. Invalid or non-positive values fall back to default.
+    """
+    default_mb = 500
+    raw = os.environ.get("OBSIGATE_MEDIA_MAX_INLINE_MB", "").strip()
+    if not raw:
+        return default_mb * 1024 * 1024
+    try:
+        mb = float(raw)
+    except ValueError:
+        return default_mb * 1024 * 1024
+    if mb <= 0:
+        return default_mb * 1024 * 1024
+    return int(mb * 1024 * 1024)
+
+
+def stream_file_with_range(file_path: Path, request: Request, media_type: str):
+    """Return a file response honouring the HTTP ``Range`` header (roadmap #109).
+
+    Extrait de :mod:`backend.main` (``_stream_file_with_range``) sans
+    changement de comportement. Shared by ``pdf/stream`` and ``/api/media``:
+    a plain :class:`FileResponse` with ``Accept-Ranges: bytes`` when no range
+    is requested, or a :class:`StreamingResponse` (206 Partial Content,
+    64 KiB chunks) for a valid single range. An unsatisfiable range yields
+    ``416`` with a ``Content-Range: bytes */size`` header.
+
+    Reads are offloaded to threads so the event loop is never blocked
+    (ASYNC230), matching the previous inline implementation.
+    """
+    file_size = file_path.stat().st_size
+    range_header = request.headers.get("range")
+    disposition = content_disposition("inline", file_path.name)
+
+    if range_header:
+        # Parse "bytes=start-end" (single range only; multi-range is not used by viewers)
+        m = re.match(r"bytes=(\d*)-(\d*)", range_header)
+        if not m:
+            raise HTTPException(status_code=416,
+                                headers={"Content-Range": f"bytes */{file_size}"})
+        start_s, end_s = m.group(1), m.group(2)
+        if start_s == "" and end_s == "":
+            raise HTTPException(status_code=416,
+                                headers={"Content-Range": f"bytes */{file_size}"})
+        if start_s == "":
+            # suffix range: last N bytes
+            length = min(int(end_s), file_size)
+            start = file_size - length
+            end = file_size - 1
+        else:
+            start = int(start_s)
+            end = int(end_s) if end_s else file_size - 1
+            end = min(end, file_size - 1)
+        if start > end or start >= file_size:
+            raise HTTPException(status_code=416,
+                                headers={"Content-Range": f"bytes */{file_size}"})
+
+        chunk_size = end - start + 1
+
+        async def _partial():
+            f = await asyncio.to_thread(open, str(file_path), "rb")
+            try:
+                await asyncio.to_thread(f.seek, start)
+                remaining = chunk_size
+                while remaining > 0:
+                    data = await asyncio.to_thread(f.read, min(64 * 1024, remaining))
+                    if not data:
+                        break
+                    remaining -= len(data)
+                    yield data
+            finally:
+                await asyncio.to_thread(f.close)
+
+        return StreamingResponse(
+            _partial(),
+            status_code=206,
+            media_type=media_type,
+            headers={
+                "Content-Range": f"bytes {start}-{end}/{file_size}",
+                "Accept-Ranges": "bytes",
+                "Content-Length": str(chunk_size),
+                "Content-Disposition": disposition,
+            },
+        )
+
+    return FileResponse(str(file_path), media_type=media_type, headers={
+        "Accept-Ranges": "bytes",
+        "Content-Disposition": disposition})
@@ -0,0 +1,160 @@
+"""History endpoints — recent, bookmarks, saved searches (ROADMAP #85, tranche 8).
+
+Handlers déplacés depuis :mod:`backend.main` sans changement de
+comportement : mêmes chemins, mêmes modèles (``BookmarkToggleRequest``
+déménagé dans :mod:`backend.schemas`), mêmes dépendances
+d'authentification.
+
+Adaptations strictement équivalentes :
+- ``_resolve_safe_path`` / ``_backup_file`` → :mod:`backend.services.paths`
+  et :mod:`backend.services.backups` (pass-through).
+- ``_load_config`` vient de :mod:`backend.routers.config`.
+"""
+
+import logging
+from pathlib import Path
+
+import frontmatter
+from fastapi import APIRouter, Body, Depends, HTTPException, Query
+
+from backend.auth.middleware import check_vault_access, require_auth
+from backend.history import get_bookmarks, toggle_bookmark
+from backend.indexer import find_file_in_index, get_vault_data, update_single_file
+from backend.routers.config import _load_config
+from backend.saved_searches import delete_saved, get_saved, save_search
+from backend.schemas import (
+    BookmarksResponse,
+    BookmarkToggleRequest,
+    BookmarkToggleResponse,
+    RecentResponse,
+    SavedSearch,
+    StatusResponse,
+)
+from backend.services.backups import create_backup
+from backend.services.paths import resolve_safe_path
+from backend.services.recent import humanize_mtime, list_recent
+
+logger = logging.getLogger("obsigate")
+
+router = APIRouter(tags=["Bookmarks"])
+
+
+@router.get("/api/recent", response_model=RecentResponse)
+async def api_recent(limit: int | None = Query(None), vault: str | None = Query(None), mode: str | None = Query("opened"), current_user=Depends(require_auth)):
+    config = _load_config()
+    actual_limit = limit if limit is not None else config.get("recent_files_limit", 20)
+
+    username = current_user.get("username")
+    user_vaults = current_user.get("_token_vaults") or current_user.get("vaults", [])
+
+    return list_recent(
+        username,
+        user_vaults,
+        vault=vault,
+        limit=actual_limit,
+        mode=mode or "opened",
+    )
+
+
+@router.get("/api/bookmarks", response_model=BookmarksResponse)
+async def api_bookmarks(vault: str | None = Query(None), current_user=Depends(require_auth)):
+    username = current_user.get("username")
+    user_vaults = current_user.get("_token_vaults") or current_user.get("vaults", [])
+
+    if not username:
+        return {"files": []}
+
+    history = get_bookmarks(username, vault_filter=vault)
+    files_resp = []
+    for item in history:
+        v_name = item["vault"]
+        if "*" not in user_vaults and v_name not in user_vaults:
+            continue
+
+        # Find in index to get metadata
+        f_idx = find_file_in_index(item["path"], v_name)
+        if f_idx:
+            files_resp.append({
+                "path": f_idx["path"],
+                "title": f_idx.get("title") or item["path"].split("/")[-1],
+                "vault": v_name,
+                "mtime": item["bookmarked_at"],
+                "mtime_human": humanize_mtime(item["bookmarked_at"]),
+                "size_bytes": f_idx.get("size", 0),
+                "tags": [f"#{t}" for t in f_idx.get("tags", [])][:5],
+                "bookmarked": True
+            })
+        else:
+            files_resp.append({
+                "path": item["path"],
+                "title": item.get("title") or item["path"].split("/")[-1],
+                "vault": v_name,
+                "mtime": item["bookmarked_at"],
+                "mtime_human": humanize_mtime(item["bookmarked_at"]),
+                "tags": [],
+                "bookmarked": True
+            })
+    return {
+        "files": files_resp,
+        "total": len(files_resp)
+    }
+
+
+@router.post("/api/bookmarks/toggle", response_model=BookmarkToggleResponse)
+async def api_toggle_bookmark(req: BookmarkToggleRequest, current_user=Depends(require_auth)):
+    username = current_user.get("username")
+    if not username:
+        raise HTTPException(status_code=401, detail="Not authenticated")
+
+    # Check vault access
+    if not check_vault_access(req.vault, current_user):
+        raise HTTPException(status_code=403, detail="Access denied to vault")
+
+    is_now_bookmarked = toggle_bookmark(username, req.vault, req.path, req.title or "")
+
+    # Update the file's YAML frontmatter: favoris: true/false
+    vault_data = get_vault_data(req.vault)
+    if vault_data:
+        file_path = resolve_safe_path(Path(vault_data["path"]), req.path)
+        if file_path.exists() and file_path.suffix == ".md":
+            try:
+                raw = file_path.read_text(encoding="utf-8", errors="replace")
+                post = frontmatter.loads(raw)
+                if is_now_bookmarked:
+                    post.metadata["favoris"] = True
+                elif "favoris" in post.metadata:
+                    del post.metadata["favoris"]
+                new_raw = frontmatter.dumps(post)
+                create_backup(file_path, req.vault, req.path)
+                file_path.write_text(new_raw, encoding="utf-8")
+                await update_single_file(req.vault, str(file_path))
+            except Exception as e:
+                logger.warning(f"Failed to update favoris metadata on {req.vault}/{req.path}: {e}")
+
+    return {"bookmarked": is_now_bookmarked}
+
+
+@router.get("/api/saved-searches", response_model=list[SavedSearch])
+async def api_saved_searches(current_user=Depends(require_auth)):
+    username = current_user.get("username")
+    if not username:
+        raise HTTPException(401)
+    return get_saved(username)
+
+
+@router.post("/api/saved-searches", response_model=SavedSearch)
+async def api_save_search(body: dict = Body(...), current_user=Depends(require_auth)):
+    username = current_user.get("username")
+    if not username:
+        raise HTTPException(401)
+    return save_search(username, body)
+
+
+@router.delete("/api/saved-searches/{search_id}", response_model=StatusResponse)
+async def api_delete_saved_search(search_id: str, current_user=Depends(require_auth)):
+    username = current_user.get("username")
+    if not username:
+        raise HTTPException(401)
+    if not delete_saved(username, search_id):
+        raise HTTPException(404, "Not found")
+    return {"status": "deleted"}
@@ -0,0 +1,105 @@
+"""Real-time endpoints — SSE stream & collaboration WebSocket (ROADMAP #85, tranche 9).
+
+Handlers déplacés depuis :mod:`backend.main` sans changement de
+comportement : mêmes chemins (``/api/events``,
+``/ws/collab/{vault}/{path}``), même authentification (Depend pour le SSE,
+manuelle pour le WebSocket — les ``Depends`` FastAPI ne s'exécutent pas sur
+les routes WebSocket).
+
+Pas de tags déclarés : assignation par chemin via
+``openapi_docs.tag_for_path`` comme avant (``/api/events`` → System).
+"""
+
+import asyncio
+import json as _json
+
+from fastapi import APIRouter, Depends, WebSocket
+from fastapi.responses import StreamingResponse
+
+from backend.auth.middleware import check_vault_access, require_auth
+from backend.collab import authenticate_websocket, collab_manager
+from backend.services.paths import resolve_safe_path
+from backend.services.vaults import get_vault_root
+from backend.sse import sse_manager
+
+router = APIRouter()
+
+
+@router.get(
+    "/api/events",
+    response_class=StreamingResponse,
+    responses={200: {"content": {"text/event-stream": {}}, "description": "Server-Sent Events stream"}},
+)
+async def api_events(current_user=Depends(require_auth)):
+    """SSE stream for real-time index update notifications.
+
+    Sends keepalive comments every 30s. Events:
+    - ``index_updated``: partial index change (file create/modify/delete/move)
+    - ``index_reloaded``: full re-index completed
+    - ``vault_added``: new vault added dynamically
+    - ``vault_removed``: vault removed dynamically
+    """
+    queue = await sse_manager.connect()
+
+    async def event_generator():
+        try:
+            # Send initial connection event
+            yield f"event: connected\ndata: {_json.dumps({'sse_clients': sse_manager.client_count})}\n\n"
+            while True:
+                try:
+                    msg = await asyncio.wait_for(queue.get(), timeout=30.0)
+                    yield f"event: {msg['event']}\ndata: {msg['data']}\n\n"
+                except asyncio.TimeoutError:
+                    # Keepalive comment
+                    yield ": keepalive\n\n"
+                except asyncio.CancelledError:
+                    break
+        finally:
+            sse_manager.disconnect(queue)
+
+    return StreamingResponse(
+        event_generator(),
+        media_type="text/event-stream",
+        headers={
+            "Cache-Control": "no-cache",
+            "Connection": "keep-alive",
+            "X-Accel-Buffering": "no",
+        },
+    )
+
+
+@router.websocket("/ws/collab/{vault_name}/{path:path}")
+async def collab_websocket(websocket: WebSocket, vault_name: str, path: str):
+    """Real-time collaborative editing over WebSocket (ROADMAP #62).
+
+    One *room* is created per ``vault::path``; all clients editing the same
+    file share Yjs/CRDT updates, awareness (cursors/selection) and a debounced
+    server-side persistence of the markdown content.
+
+    Authentication is performed manually (FastAPI ``Depends`` do not run for
+    WebSocket routes) and vault access is enforced per connection.
+    """
+    from backend.services.errors import ServiceError
+
+    user = authenticate_websocket(websocket)
+    if user is None:
+        await websocket.close(code=4401)
+        return
+
+    if not check_vault_access(vault_name, user):
+        await websocket.close(code=4403)
+        return
+
+    try:
+        vault_root = get_vault_root(vault_name)
+        file_path = resolve_safe_path(vault_root, path)
+    except ServiceError:
+        await websocket.close(code=4404)
+        return
+
+    if not file_path.exists() or not file_path.is_file():
+        await websocket.close(code=4404)
+        return
+
+    await websocket.accept()
+    await collab_manager.connect(websocket, vault_name, path, file_path, user)
@@ -0,0 +1,353 @@
+"""Search, suggest, graph & index-reload endpoints (ROADMAP #85, tranche 5).
+
+Handlers déplacés depuis :mod:`backend.main` sans changement de
+comportement : mêmes chemins, mêmes modèles de réponse (déménagés dans
+:mod:`backend.schemas`), mêmes dépendances d'authentification. La logique
+métier vit déjà dans :mod:`backend.services.search`,
+:mod:`backend.search`, :mod:`backend.services.graph` et
+:mod:`backend.services.mutations`.
+
+Adaptations strictement équivalentes :
+- Le pool ``_search_executor`` de ``main`` vit désormais dans
+  :mod:`backend.search_executor` (même dimensionnement, même cycle de vie
+  géré par le lifespan de ``main``) : accès via
+  :func:`get_search_executor`.
+"""
+
+import asyncio
+import logging
+from functools import partial
+from pathlib import Path
+
+from fastapi import APIRouter, Body, Depends, HTTPException, Query
+
+from backend.audit import log_file_save
+from backend.auth.middleware import check_vault_access, require_admin, require_auth
+from backend.indexer import get_vault_data, reload_index, update_single_file
+from backend.schemas import (
+    AdvancedSearchResponse,
+    GraphResponse,
+    ReloadResponse,
+    ReplaceResponse,
+    SearchResponse,
+    SuggestResponse,
+    TagsResponse,
+    TagSuggestResponse,
+    TreeSearchResponse,
+    VaultPathsResponse,
+    VaultStatsResponse,
+)
+from backend.search import suggest_tags, suggest_titles
+from backend.search_executor import get_search_executor
+from backend.services.graph import get_graph as service_get_graph
+from backend.services.mutations import (
+    replace_in_files as service_replace_in_files,
+)
+from backend.services.search import advanced_search_vaults, list_paths, search_paths, search_vaults
+from backend.services.search import list_tags as service_list_tags
+from backend.sse import sse_manager
+
+logger = logging.getLogger("obsigate")
+
+router = APIRouter(tags=["search"])
+
+
+@router.get("/api/search", response_model=SearchResponse)
+async def api_search(
+    q: str = Query("", description="Search query"),
+    vault: str = Query("all", description="Vault filter"),
+    tag: str | None = Query(None, description="Tag filter"),
+    limit: int = Query(50, ge=1, le=200, description="Results per page"),
+    offset: int = Query(0, ge=0, description="Pagination offset"),
+    current_user=Depends(require_auth),
+):
+    """Full-text search across vaults with relevance scoring.
+
+    Supports combining free-text queries with tag filters.
+    Results are ranked by a multi-factor scoring algorithm.
+    Pagination via ``limit`` and ``offset`` (defaults preserve backward compat).
+
+    Args:
+        q: Free-text search string.
+        vault: Vault name or ``"all"`` to search everywhere.
+        tag: Comma-separated tag names to require.
+        limit: Max results per page (1–200).
+        offset: Pagination offset.
+
+    Returns:
+        ``SearchResponse`` with ranked results and snippets.
+    """
+    loop = asyncio.get_event_loop()
+    # Fetch the full result set (capped at DEFAULT_SEARCH_LIMIT internally) and
+    # paginate in the shared service so routes and tools share the same logic.
+    return await loop.run_in_executor(
+        get_search_executor(),
+        partial(search_vaults, q, vault, tag, limit, offset),
+    )
+
+
+@router.get("/api/tags", response_model=TagsResponse)
+async def api_tags(vault: str | None = Query(None, description="Vault filter"), current_user=Depends(require_auth)):
+    """Return all unique tags with occurrence counts.
+
+    Args:
+        vault: Optional vault name to restrict tag aggregation.
+
+    Returns:
+        ``TagsResponse`` with tags sorted by descending count.
+    """
+    return {"vault_filter": vault, "tags": service_list_tags(vault)}
+
+
+@router.get("/api/tree-search", response_model=TreeSearchResponse)
+async def api_tree_search(
+    q: str = Query("", description="Search query"),
+    vault: str = Query("all", description="Vault filter"),
+    current_user=Depends(require_auth),
+):
+    """Search for files and directories in the tree structure using pre-built index.
+
+    Uses the in-memory path index for instant filtering without filesystem access.
+
+    Args:
+        q: Search string to match against file/directory paths.
+        vault: Vault name or "all" to search everywhere.
+
+    Returns:
+        ``TreeSearchResponse`` with matching paths.
+    """
+    return search_paths(q, vault)
+
+
+@router.get("/api/vault/{vault_name}/paths", response_model=VaultPathsResponse)
+async def api_vault_paths(
+    vault_name: str,
+    limit: int = Query(5000, ge=1, le=20000, description="Maximum number of indexed paths to return"),
+    current_user=Depends(require_auth),
+):
+    """Return a flat list of every indexed file and directory in a vault.
+
+    Used by the AI assistant ``@`` mention menu to filter paths instantly on
+    the client (one request instead of one per keystroke).
+
+    Args:
+        vault_name: Name of the vault.
+        limit: Maximum number of entries returned.
+
+    Returns:
+        ``VaultPathsResponse`` with the vault's indexed paths.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+    return list_paths(vault_name, limit=limit)
+
+
+@router.get("/api/search/advanced", response_model=AdvancedSearchResponse)
+async def api_advanced_search(
+    q: str = Query("", description="Advanced search query (supports tag:, vault:, title:, path:, ext: operators)"),
+    vault: str = Query("all", description="Vault filter"),
+    tag: str | None = Query(None, description="Comma-separated tag filter"),
+    limit: int = Query(50, ge=1, le=200, description="Results per page"),
+    offset: int = Query(0, ge=0, description="Pagination offset"),
+    sort: str = Query("relevance", description="Sort by 'relevance' or 'modified'"),
+    case_sensitive: bool = Query(False, description="Match case"),
+    whole_word: bool = Query(False, description="Match whole words only"),
+    regex: bool = Query(False, description="Treat query as regex"),
+    include_paths: str | None = Query(None, description="Comma-separated glob patterns to include"),
+    exclude_paths: str | None = Query(None, description="Comma-separated glob patterns to exclude"),
+    created: str | None = Query(None, description="Created date filter (>date, <date, date..date)"),
+    modified: str | None = Query(None, description="Modified date filter (>date, <date, date..date, <Nd)"),
+    size: str | None = Query(None, description="Size filter (>size, <size, size..size, e.g. >1MB, <10KB)"),
+    semantic: bool = Query(False, description="Fuse TF-IDF with semantic embeddings (RRF)"),
+    current_user=Depends(require_auth),
+):
+    """Advanced full-text search with TF-IDF scoring, facets, and pagination.
+
+    Supports advanced query operators:
+    - ``tag:<name>`` or ``#<name>`` — filter by tag
+    - ``vault:<name>`` — filter by vault
+    - ``title:<text>`` — filter by title substring
+    - ``path:<text>`` — filter by path substring
+    - ``ext:<type>`` — filter by file extension
+    - ``created:>2024-01-01`` — filter by creation date
+    - ``modified:<7d`` or ``modified:2024-01-01..2024-06-01`` — filter by modification date
+    - ``size:>1MB`` or ``size:100KB..1MB`` — filter by file size
+    - Remaining text is scored using TF-IDF with accent normalization.
+    - Toggles: case_sensitive, whole_word, regex
+    - Path filters: include_paths, exclude_paths (glob patterns)
+    - ``semantic=true`` — fuse the TF-IDF ranking with the semantic (embedding)
+      ranking via Reciprocal Rank Fusion and expose ``semantic_score`` per result.
+
+    Results include ``<mark>``-highlighted snippets and faceted tag/vault counts.
+    """
+    loop = asyncio.get_event_loop()
+    search_fn = partial(advanced_search_vaults, q, vault=vault, tag=tag,
+                limit=limit, offset=offset, sort=sort,
+                case_sensitive=case_sensitive, whole_word=whole_word, regex=regex,
+                include_paths=include_paths, exclude_paths=exclude_paths,
+                created=created, modified=modified, size=size, semantic=semantic)
+    try:
+        return await loop.run_in_executor(get_search_executor(), search_fn)
+    except ValueError as e:
+        raise HTTPException(400, str(e)) from e
+
+
+@router.post("/api/search/replace", response_model=ReplaceResponse)
+async def api_search_replace(
+    body: dict = Body(...),
+    current_user=Depends(require_auth),
+):
+    """Find and replace across vault files."""
+    query = body.get("query", "")
+    replacement = body.get("replacement", "")
+    vault_filter = body.get("vault", "all")
+    case_sensitive = body.get("case_sensitive", False)
+    whole_word = body.get("whole_word", False)
+    regex_mode = body.get("regex", False)
+    include_paths = body.get("include_paths")
+    exclude_paths = body.get("exclude_paths")
+    replace_all = body.get("replace_all", False)
+    dry_run = body.get("dry_run", not replace_all)
+
+    if not query:
+        raise HTTPException(400, "Query is required")
+
+    result = service_replace_in_files(
+        query,
+        replacement,
+        vault=vault_filter,
+        case_sensitive=case_sensitive,
+        whole_word=whole_word,
+        regex=regex_mode,
+        include_paths=include_paths,
+        exclude_paths=exclude_paths,
+        replace_all=replace_all,
+        dry_run=dry_run,
+        is_vault_allowed=lambda v: check_vault_access(v, current_user),
+    )
+
+    if dry_run:
+        return result
+
+    # Side effects for applied replacements (audit + incremental index).
+    for match in result.get("replaced", []):
+        log_file_save(current_user["username"], match["vault"], match["path"], match.get("size", 0))
+        vault_data = get_vault_data(match["vault"])
+        if vault_data:
+            abs_path = str(Path(vault_data["path"]) / match["path"])
+            await update_single_file(match["vault"], abs_path)
+
+    return result
+
+
+@router.get("/api/suggest", response_model=SuggestResponse)
+async def api_suggest(
+    q: str = Query("", description="Prefix to search for in file titles"),
+    vault: str = Query("all", description="Vault filter"),
+    limit: int = Query(10, ge=1, le=50, description="Max suggestions"),
+    current_user=Depends(require_auth),
+):
+    """Suggest file titles matching a prefix (accent-insensitive).
+
+    Used for autocomplete in the search input.
+
+    Args:
+        q: User-typed prefix (minimum 2 characters).
+        vault: Vault name or ``"all"``.
+        limit: Max number of suggestions.
+
+    Returns:
+        ``SuggestResponse`` with matching file title suggestions.
+    """
+    suggestions = suggest_titles(q, vault_filter=vault, limit=limit)
+    return {"query": q, "suggestions": suggestions}
+
+
+@router.get("/api/tags/suggest", response_model=TagSuggestResponse)
+async def api_tags_suggest(
+    q: str = Query("", description="Prefix to search for in tags"),
+    vault: str = Query("all", description="Vault filter"),
+    limit: int = Query(10, ge=1, le=50, description="Max suggestions"),
+    current_user=Depends(require_auth),
+):
+    """Suggest tags matching a prefix (accent-insensitive).
+
+    Used for autocomplete when typing ``tag:`` or ``#`` in the search input.
+
+    Args:
+        q: User-typed prefix (with or without ``#``, minimum 2 characters).
+        vault: Vault name or ``"all"``.
+        limit: Max number of suggestions.
+
+    Returns:
+        ``TagSuggestResponse`` with matching tag suggestions and counts.
+    """
+    suggestions = suggest_tags(q, vault_filter=vault, limit=limit)
+    return {"query": q, "suggestions": suggestions}
+
+
+@router.get("/api/index/reload", response_model=ReloadResponse)
+async def api_reload(current_user=Depends(require_admin)):
+    """Force a full re-index of all configured vaults.
+
+    Returns:
+        ``ReloadResponse`` with per-vault file and tag counts.
+    """
+    stats = await reload_index()
+    await sse_manager.broadcast("index_reloaded", {
+        "vaults": list(stats.keys()),
+        "stats": stats,
+    })
+    return {"status": "ok", "vaults": stats}
+
+
+@router.get("/api/graph/{vault_name}", response_model=GraphResponse)
+async def api_graph(
+    vault_name: str,
+    path: str = Query("", description="Relative path to focus on"),
+    depth: int = Query(1, ge=0, le=3, description="How many levels deep to expand"),
+    scope: str = Query("directory", description="'directory' (default) or 'full' for entire vault"),
+    tag: str = Query("", description="Filter: only show files with this tag"),
+    current_user=Depends(require_auth),
+):
+    """Return graph data (nodes and edges) for a vault or directory.
+
+    Nodes represent files and directories. Edges represent parent-child
+    relationships and wikilinks between markdown files.
+
+    Args:
+        vault_name: Name of the vault.
+        path: Relative directory path to focus on (empty = root).
+        depth: Expansion depth (0 = only direct children, 1-3 = deeper).
+        scope: 'directory' for subtree, 'full' for entire vault.
+        tag: Optional tag filter (only files with this tag appear).
+
+    Returns:
+        ``GraphResponse`` with nodes and edges.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(status_code=403, detail=f"Accès refusé à la vault '{vault_name}'")
+
+    return service_get_graph(vault_name, path=path, depth=depth, scope=scope, tag=tag)
+
+
+@router.get("/api/index/reload/{vault_name}", response_model=VaultStatsResponse)
+async def api_reload_vault(vault_name: str, current_user=Depends(require_admin)):
+    """Force a re-index of a single vault.
+
+    Args:
+        vault_name: Name of the vault to reindex.
+
+    Returns:
+        Dict with vault statistics.
+    """
+    try:
+        from backend.indexer import reload_single_vault
+        stats = await reload_single_vault(vault_name)
+        await sse_manager.broadcast("vault_reloaded", {
+            "vault": vault_name,
+            "stats": stats,
+        })
+        return {"status": "ok", "vault": vault_name, "stats": stats}
+    except ValueError as e:
+        raise HTTPException(status_code=404, detail=str(e))
@@ -0,0 +1,296 @@
+"""Public share endpoints (ROADMAP #85, tranche 3).
+
+Handlers déplacés depuis :mod:`backend.main` sans changement de
+comportement : mêmes chemins (``/api/share/*``, ``/api/shares``,
+``/s/{token}*``), mêmes modèles de réponse, mêmes dépendances
+d'authentification (les pages ``/s/*`` restent publiques). La logique
+métier vit déjà dans :mod:`backend.share`.
+
+Adaptations strictement équivalentes (pas de changement de comportement) :
+- ``_resolve_safe_path`` / ``_backup_file`` de ``main`` n'étaient que des
+  wrappers directs : appelés ici via :mod:`backend.services.paths` et
+  :mod:`backend.services.backups` (mêmes signatures, mêmes exceptions
+  ``ServiceError`` toujours mappées par le handler global de ``main``).
+- ``_render_markdown`` vient de :mod:`backend.render` (#85 T9, sans cycle
+  d'import).
+"""
+
+import html as html_mod
+import json as _json
+import logging
+from pathlib import Path
+
+import frontmatter
+from fastapi import APIRouter, Body, Depends, HTTPException, Query
+from fastapi.responses import FileResponse, HTMLResponse, Response
+
+from backend.auth.middleware import check_vault_access, require_auth
+from backend.indexer import get_vault_data, parse_markdown_file, update_single_file
+from backend.render import _render_markdown
+from backend.schemas import ShareModel, StatusResponse
+from backend.secret_redactor import redact_file_content
+from backend.services.backups import create_backup
+from backend.services.paths import resolve_safe_path
+from backend.share import (
+    create_share,
+    get_share_by_token,
+    list_shares,
+    record_access,
+    revoke_share,
+)
+
+logger = logging.getLogger("obsigate")
+
+# Lazy import: WeasyPrint PDF export (requires GTK, may not be available everywhere)
+try:
+    from backend.pdf_export import build_pdf_html, generate_pdf
+except Exception:  # pragma: no cover - WeasyPrint/GTK missing
+    generate_pdf = None  # type: ignore[assignment]
+    build_pdf_html = None  # type: ignore[assignment]
+
+    logging.getLogger("obsigate").warning("PDF export unavailable (WeasyPrint/GTK not found)")
+
+router = APIRouter(tags=["sharing"])
+
+
+@router.post("/api/share/{vault_name}", response_model=ShareModel)
+async def api_share_create(
+    vault_name: str,
+    body: dict = Body(...),
+    current_user=Depends(require_auth),
+):
+    """Create a public share link for a document.
+
+    Also sets ``publish: true`` in the file's YAML frontmatter so the
+    frontend can visually indicate the file is publicly shared.
+    """
+    if not check_vault_access(vault_name, current_user):
+        raise HTTPException(403, f"Accès refusé à la vault '{vault_name}'")
+    path = body.get("path", "")
+    expires = body.get("expires_in_hours")
+    share = create_share(vault_name, path, current_user["username"], expires)
+    share["url"] = f"/s/{share['token']}"
+
+    # Set publish: true in the file's frontmatter
+    vault_data = get_vault_data(vault_name)
+    if vault_data:
+        file_path = resolve_safe_path(Path(vault_data["path"]), path)
+        if file_path.exists() and file_path.suffix == ".md":
+            try:
+                raw = file_path.read_text(encoding="utf-8", errors="replace")
+                post = frontmatter.loads(raw)
+                if not post.metadata.get("publish"):
+                    post.metadata["publish"] = True
+                    new_raw = frontmatter.dumps(post)
+                    create_backup(file_path, vault_name, path)
+                    file_path.write_text(new_raw, encoding="utf-8")
+                    await update_single_file(vault_name, str(file_path))
+                    logger.info(f"Set publish:true on {vault_name}/{path}")
+            except Exception as e:
+                logger.warning(f"Failed to set publish metadata on {vault_name}/{path}: {e}")
+
+    return share
+
+
+@router.get("/api/shares", response_model=list[ShareModel])
+async def api_shares_list(vault: str | None = Query(None), current_user=Depends(require_auth)):
+    """List all shares (optionally filtered by vault)."""
+    shares = list_shares(vault)
+    for s in shares:
+        s["url"] = f"/s/{s['token']}"
+    return shares
+
+
+@router.delete("/api/share/{share_id}", response_model=StatusResponse)
+async def api_share_revoke(share_id: str, current_user=Depends(require_auth)):
+    if not revoke_share(share_id):
+        raise HTTPException(404, "Share not found")
+    return {"status": "revoked"}
+
+
+@router.get(
+    "/s/{token}/pdf",
+    response_class=Response,
+    responses={200: {"content": {"application/pdf": {}}, "description": "Shared document as PDF"}},
+)
+async def public_share_pdf_download(token: str):
+    """Download shared document as real PDF via WeasyPrint."""
+    if generate_pdf is None:
+        raise HTTPException(501, "PDF export unavailable (WeasyPrint/GTK not available)")
+    share = get_share_by_token(token)
+    if not share:
+        raise HTTPException(404, "Share not found or expired")
+    vault_data = get_vault_data(share["vault"])
+    if not vault_data:
+        raise HTTPException(404, "Vault not found")
+    vault_root = Path(vault_data["path"])
+    file_path = resolve_safe_path(vault_root, share["path"])
+    if not file_path.exists():
+        raise HTTPException(404, "File not found")
+    try:
+        raw = file_path.read_text(encoding="utf-8", errors="replace")
+    except Exception:
+        raise HTTPException(500, "Cannot read file")
+    record_access(token)
+    raw = redact_file_content(raw, str(file_path))
+    post = parse_markdown_file(raw)
+    ext = file_path.suffix.lower()
+    if ext == ".md":
+        html = _render_markdown(post.content, share["vault"], file_path)
+    else:
+        html = f'<pre style="font-family:monospace;font-size:12px;line-height:1.6;white-space:pre-wrap">{html_mod.escape(raw)}</pre>'
+    title = post.metadata.get("title", file_path.stem)
+    pdf_html = build_pdf_html(html, str(title))
+    pdf_bytes = generate_pdf(pdf_html, str(title))
+    safe_name = "".join(c for c in str(title) if c.isascii() and (c.isalnum() or c in " _-.")).strip() or "document"
+    return Response(content=pdf_bytes, media_type="application/pdf", headers={"Content-Disposition": f'attachment; filename="{safe_name}.pdf"'})
+
+
+@router.get("/s/{token}/raw", response_class=FileResponse)
+async def public_share_raw(token: str):
+    """Download the raw (original) shared document."""
+    share = get_share_by_token(token)
+    if not share:
+        raise HTTPException(404, "Share not found or expired")
+    vault_data = get_vault_data(share["vault"])
+    if not vault_data:
+        raise HTTPException(404, "Vault not found")
+    vault_root = Path(vault_data["path"])
+    file_path = resolve_safe_path(vault_root, share["path"])
+    if not file_path.exists():
+        raise HTTPException(404, "File not found")
+    record_access(token)
+    return FileResponse(path=str(file_path), filename=file_path.name, media_type="application/octet-stream")
+
+
+@router.get("/s/{token}", response_class=HTMLResponse)
+async def public_share_view(token: str):
+    """Public share view — no authentication required."""
+    share = get_share_by_token(token)
+    if not share:
+        raise HTTPException(404, "Share not found or expired")
+    vault_data = get_vault_data(share["vault"])
+    if not vault_data:
+        raise HTTPException(404, "Vault not found")
+    vault_root = Path(vault_data["path"])
+    file_path = resolve_safe_path(vault_root, share["path"])
+    if not file_path.exists():
+        raise HTTPException(404, "File not found")
+    try:
+        raw = file_path.read_text(encoding="utf-8", errors="replace")
+    except Exception:
+        raise HTTPException(500, "Cannot read file")
+    record_access(token)
+    raw = redact_file_content(raw, str(file_path))
+    post = parse_markdown_file(raw)
+    ext = file_path.suffix.lower()
+
+    if ext == ".md":
+        html = _render_markdown(post.content, share["vault"], file_path)
+    else:
+        escaped = html_mod.escape(raw)
+        html = f'<pre style="background:var(--bg-card);border:1px solid var(--border);border-radius:8px;padding:16px;overflow-x:auto;font-size:0.85rem;line-height:1.6"><code>{escaped}</code></pre>'
+
+    title = post.metadata.get("title", file_path.stem)
+
+    # Escape everything user-controlled before embedding in HTML/JS (BUG-022).
+    title_esc = html_mod.escape(str(title))
+    # Neutralise ``</script>`` in the JS string literal too.
+    title_download_js = (
+        _json.dumps(f"{title}.md")
+        .replace("<", "\\u003c")
+        .replace(">", "\\u003e")
+        .replace("&", "\\u0026")
+    )
+
+    # JSON-escape raw content for embedding in HTML, and neutralise ``</script>``.
+    raw_json = (
+        _json.dumps(raw)
+        .replace("<", "\\u003c")
+        .replace(">", "\\u003e")
+        .replace("&", "\\u0026")
+    )
+    fm_html = ""
+    if post.metadata:
+        fm_items = []
+        skip_keys = {"title", "titre"}
+        for k, v in post.metadata.items():
+            if k in skip_keys:
+                continue
+            if isinstance(v, list):
+                v = ", ".join(str(x) for x in v)
+            elif isinstance(v, bool):
+                v = "✓" if v else "✗"
+            elif v is None:
+                v = "—"
+            fm_items.append(
+                f'<div class="fm-row"><span class="fm-key">{html_mod.escape(str(k))}</span>'
+                f'<span class="fm-val">{html_mod.escape(str(v))}</span></div>'
+            )
+        if fm_items:
+            fm_html = f'<div class="fm-section"><div class="fm-header">Frontmatter</div><div class="fm-body">{"".join(fm_items)}</div></div>'
+
+    return HTMLResponse(f"""<!DOCTYPE html><html lang="fr" data-theme="dark"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1">
+<title>{title_esc} — ObsiGate Share</title>
+<style>
+:root {{ --bg:#1a1a2e; --bg-card:#16213e; --text:#e0e0e0; --text-muted:#888; --accent:#6366f1; --border:#2a2a4a; --banner-bg:var(--accent); --banner-text:#fff; }}
+[data-theme="light"] {{ --bg:#f8f9fa; --bg-card:#fff; --text:#1a1a2e; --text-muted:#666; --accent:#4f46e5; --border:#ddd; --banner-bg:#eef2ff; --banner-text:#4338ca; }}
+*{{box-sizing:border-box;margin:0;padding:0}}
+body{{font-family:system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;min-height:100vh}}
+.toolbar{{position:sticky;top:0;z-index:10;background:var(--bg-card);border-bottom:1px solid var(--border);padding:8px 16px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}}
+.toolbar-title{{font-weight:600;font-size:0.9rem;margin-right:auto;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}}
+.toolbar-btn{{padding:6px 12px;border:1px solid var(--border);border-radius:6px;background:var(--bg);color:var(--text);cursor:pointer;font-size:0.8rem;display:flex;align-items:center;gap:5px;transition:all .15s}}
+.toolbar-btn:hover{{background:var(--accent);color:#fff;border-color:var(--accent)}}
+.toolbar-btn svg{{width:15px;height:15px;flex-shrink:0}}
+.toolbar-btn:hover svg{{stroke:#fff}}
+.share-banner{{background:var(--banner-bg);color:var(--banner-text);padding:6px 16px;font-size:0.8rem;text-align:center;display:flex;align-items:center;justify-content:center;gap:6px}}
+.share-banner svg{{width:14px;height:14px;flex-shrink:0}}
+.content{{max-width:820px;margin:0 auto;padding:24px 20px 60px}}
+.content h1{{font-size:1.8rem;margin-bottom:16px;border-bottom:2px solid var(--border);padding-bottom:8px}}
+.content h2{{font-size:1.4rem;margin:24px 0 12px}}
+.content h3{{font-size:1.15rem;margin:20px 0 8px}}
+.content p{{margin:8px 0}}
+.content pre{{background:var(--bg-card);border:1px solid var(--border);border-radius:8px;padding:12px 16px;overflow-x:auto;font-size:0.85rem}}
+.content code{{font-size:0.9em;background:var(--bg-card);padding:1px 4px;border-radius:3px}}
+.content pre code{{background:none;padding:0}}
+.content a{{color:var(--accent)}}.content img{{max-width:100%;border-radius:6px}}
+.fm-section{{background:var(--bg-card);border:1px solid var(--border);border-radius:8px;padding:12px 16px;margin-bottom:20px}}
+.fm-header{{font-weight:600;font-size:0.8rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.5px;margin-bottom:8px}}
+.fm-body{{display:grid;grid-template-columns:1fr 2fr;gap:4px 12px;font-size:0.85rem}}
+.fm-row{{display:contents}}
+.fm-key{{color:var(--accent);font-weight:500}}
+.fm-val{{color:var(--text);word-break:break-word}}
+.content blockquote{{border-left:3px solid var(--accent);padding-left:16px;color:var(--text-muted);margin:12px 0}}
+.content table{{border-collapse:collapse;width:100%;margin:12px 0}}
+.content th,.content td{{border:1px solid var(--border);padding:8px 12px;text-align:left}}
+.content th{{background:var(--bg-card)}}
+@media print{{.toolbar,.share-banner{{display:none}}body{{background:#fff;color:#000}}}}
+@media(max-width:600px){{.content{{padding:16px 12px 40px}}.toolbar{{gap:4px}}.toolbar-btn{{padding:4px 8px;font-size:0.7rem}}}}
+</style></head>
+<body>
+<div class="share-banner">
+  <svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M14.5 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V7.5L14.5 2z"/><polyline points="14 2 14 8 20 8"/></svg>
+  Document partagé via ObsiGate
+</div>
+<div class="toolbar">
+  <span class="toolbar-title">{title_esc}</span>
+  <button class="toolbar-btn" onclick="toggleTheme()" title="Thème clair/sombre">
+    <svg id="theme-icon-dark" xmlns="http://www.w3.org/2000/svg" width="15" height="15" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z"/></svg>
+    <svg id="theme-icon-light" xmlns="http://www.w3.org/2000/svg" width="15" height="15" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" style="display:none"><circle cx="12" cy="12" r="5"/><line x1="12" y1="1" x2="12" y2="3"/><line x1="12" y1="21" x2="12" y2="23"/><line x1="4.22" y1="4.22" x2="5.64" y2="5.64"/><line x1="18.36" y1="18.36" x2="19.78" y2="19.78"/><line x1="1" y1="12" x2="3" y2="12"/><line x1="21" y1="12" x2="23" y2="12"/><line x1="4.22" y1="19.78" x2="5.64" y2="18.36"/><line x1="18.36" y1="5.64" x2="19.78" y2="4.22"/></svg>
+  </button>
+  <button class="toolbar-btn" onclick="exportMD()" title="Télécharger en Markdown">
+    <svg xmlns="http://www.w3.org/2000/svg" width="15" height="15" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"/><polyline points="7 10 12 15 17 10"/><line x1="12" y1="15" x2="12" y2="3"/></svg>
+    .md
+  </button>
+  <button class="toolbar-btn" onclick="location.href=location.pathname+'/pdf'" title="Télécharger en PDF">
+    <svg xmlns="http://www.w3.org/2000/svg" width="15" height="15" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M14 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2-2V8z"/><polyline points="14 2 14 8 20 8"/><line x1="16" y1="13" x2="8" y2="13"/><line x1="16" y1="17" x2="8" y2="17"/><polyline points="10 9 9 9 8 9"/></svg>
+    PDF
+  </button>
+</div>
+<div class="content" id="content">{fm_html}{html}</div>
+<script id="raw-content" type="text/plain" style="display:none">{raw_json}</script>
+<script>
+function toggleTheme(){{var t=document.documentElement;var isDark=t.dataset.theme==="dark";t.dataset.theme=isDark?"light":"dark";document.getElementById("theme-icon-dark").style.display=isDark?"none":"";document.getElementById("theme-icon-light").style.display=isDark?"":"none";localStorage.setItem("obsigate-share-theme",t.dataset.theme)}}
+(function(){{var s=localStorage.getItem("obsigate-share-theme");if(!s)s="dark";document.documentElement.dataset.theme=s;var isDark=s==="dark";document.getElementById("theme-icon-dark").style.display=isDark?"":"none";document.getElementById("theme-icon-light").style.display=isDark?"none":""}})();
+function exportMD(){{var raw=JSON.parse(document.getElementById("raw-content").textContent);var b=new Blob([raw],{{type:"text/markdown"}});var a=document.createElement("a");a.href=URL.createObjectURL(b);a.download={title_download_js};a.click()}}
+</script></body></html>""")
@@ -0,0 +1,107 @@
+"""Vault management endpoints (ROADMAP #85, tranche 8).
+
+Handlers déplacés depuis :mod:`backend.main` sans changement de
+comportement : mêmes chemins (``/api/vaults*``), mêmes modèles de réponse
+(``VaultInfo`` déménagé dans :mod:`backend.schemas`), mêmes dépendances
+d'authentification.
+
+Le handle du file-watcher vit désormais dans :mod:`backend.watcher_state`
+(partagé avec le lifespan de ``main``) au lieu du global de ``main``.
+"""
+
+from pathlib import Path
+
+from fastapi import APIRouter, Body, Depends, HTTPException
+
+from backend.auth.middleware import require_admin, require_auth
+from backend.indexer import add_vault_to_index, index, remove_vault_from_index
+from backend.schemas import VaultActionResponse, VaultInfo, VaultsStatusResponse, VaultStatsResponse
+from backend.services.vaults import list_accessible_vaults
+from backend.sse import sse_manager
+from backend.watcher_state import get_watcher
+
+router = APIRouter(tags=["vaults"])
+
+
+@router.get("/api/vaults", response_model=list[VaultInfo])
+async def api_vaults(current_user=Depends(require_auth)):
+    """List configured vaults the user has access to.
+
+    Returns:
+        List of vault summary objects filtered by user permissions.
+    """
+    return list_accessible_vaults(current_user)
+
+
+@router.post("/api/vaults/add", response_model=VaultStatsResponse)
+async def api_add_vault(body: dict = Body(...), current_user=Depends(require_admin)):
+    """Add a new vault dynamically without restarting.
+
+    Body:
+        name: Display name for the vault.
+        path: Absolute filesystem path to the vault directory.
+    """
+    name = body.get("name", "").strip()
+    vault_path = body.get("path", "").strip()
+
+    if not name or not vault_path:
+        raise HTTPException(status_code=400, detail="Both 'name' and 'path' are required")
+
+    if name in index:
+        raise HTTPException(status_code=409, detail=f"Vault '{name}' already exists")
+
+    if not Path(vault_path).exists():
+        raise HTTPException(status_code=400, detail=f"Path does not exist: {vault_path}")
+
+    stats = await add_vault_to_index(name, vault_path)
+
+    # Start watching the new vault
+    watcher = get_watcher()
+    if watcher:
+        await watcher.add_vault(name, vault_path)
+
+    await sse_manager.broadcast("vault_added", {"vault": name, "stats": stats})
+    return {"status": "ok", "vault": name, "stats": stats}
+
+
+@router.delete("/api/vaults/{vault_name}", response_model=VaultActionResponse)
+async def api_remove_vault(vault_name: str, current_user=Depends(require_admin)):
+    """Remove a vault from the index and stop watching it.
+
+    Args:
+        vault_name: Name of the vault to remove.
+    """
+    if vault_name not in index:
+        raise HTTPException(status_code=404, detail=f"Vault '{vault_name}' not found")
+
+    # Stop watching
+    watcher = get_watcher()
+    if watcher:
+        await watcher.remove_vault(vault_name)
+
+    await remove_vault_from_index(vault_name)
+    await sse_manager.broadcast("vault_removed", {"vault": vault_name})
+    return {"status": "ok", "vault": vault_name}
+
+
+@router.get("/api/vaults/status", response_model=VaultsStatusResponse)
+async def api_vaults_status(current_user=Depends(require_auth)):
+    """Detailed status of all vaults including watcher state.
+
+    Returns per-vault: file count, tag count, watching status, vault path.
+    """
+    watcher = get_watcher()
+    statuses = {}
+    for vname, vdata in index.items():
+        watching = watcher is not None and vname in watcher.observers
+        statuses[vname] = {
+            "file_count": len(vdata.get("files", [])),
+            "tag_count": len(vdata.get("tags", {})),
+            "path": vdata.get("path", ""),
+            "watching": watching,
+        }
+    return {
+        "vaults": statuses,
+        "watcher_active": watcher is not None,
+        "sse_clients": sse_manager.client_count,
+    }
@@ -0,0 +1,54 @@
+"""Webhook CRUD endpoints (ROADMAP #85, tranche 2).
+
+Handlers déplacés depuis :mod:`backend.main` sans changement de
+comportement : mêmes chemins (``/api/webhooks``), même modèle de réponse
+(:class:`backend.schemas.WebhookModel`), même dépendance admin. La logique
+métier vit déjà dans :mod:`backend.webhooks` (validation d'URL anti-SSRF,
+store ``webhook_secrets.json`` — BUG-026).
+"""
+
+from fastapi import APIRouter, Body, Depends, HTTPException
+
+from backend.auth.middleware import require_admin
+from backend.schemas import StatusResponse, WebhookModel
+from backend.webhooks import (
+    create_webhook,
+    delete_webhook,
+    get_webhooks,
+    update_webhook,
+)
+
+router = APIRouter(prefix="/api/webhooks", tags=["webhooks"])
+
+
+@router.get("", response_model=list[WebhookModel])
+async def api_webhooks_list(current_user=Depends(require_admin)):
+    return get_webhooks()
+
+
+@router.post("", response_model=WebhookModel)
+async def api_webhooks_create(body: dict = Body(...), current_user=Depends(require_admin)):
+    name = body.get("name", "Unnamed")
+    url = body.get("url", "")
+    events = body.get("events", [])
+    secret = body.get("secret")
+    if not url:
+        raise HTTPException(400, "URL is required")
+    return create_webhook(name, url, events, secret)
+
+
+@router.patch("/{webhook_id}", response_model=WebhookModel)
+async def api_webhooks_update(
+    webhook_id: str, body: dict = Body(...), current_user=Depends(require_admin)
+):
+    result = update_webhook(webhook_id, body)
+    if not result:
+        raise HTTPException(404, "Webhook not found")
+    return result
+
+
+@router.delete("/{webhook_id}", response_model=StatusResponse)
+async def api_webhooks_delete(webhook_id: str, current_user=Depends(require_admin)):
+    if not delete_webhook(webhook_id):
+        raise HTTPException(404, "Webhook not found")
+    return {"status": "deleted"}
@@ -188,6 +188,447 @@ class BackupsAutoResponse(BaseModel):
    since_hours: int | float = Field(description="Look-back window in hours")


+class DiffResponse(BaseModel):
+    """Response containing a unified diff between two file versions (#85 — extrait de backend.main, inchangé)."""
+
+    vault: str = Field(description="Vault name")
+    path: str = Field(description="Relative file path")
+    version: int = Field(description="Backup version timestamp (left/old side)")
+    compare_with: int | None = Field(default=None, description="Other backup version or null for current file (right/new side)")
+    diff: str = Field(description="Unified diff (empty if no changes)")
+
+
+class RestoreRequest(BaseModel):
+    """Request to restore a file from a backup (#85 — extrait de backend.main, inchangé)."""
+
+    version: int = Field(description="Timestamp of the backup version to restore")
+
+
+class RestoreResponse(BaseModel):
+    """Response after restoring a file from backup (#85 — extrait de backend.main, inchangé)."""
+
+    success: bool = Field(description="Whether restore succeeded")
+    vault: str = Field(description="Vault name")
+    path: str = Field(description="Relative file path")
+    restored_from: int = Field(description="Timestamp of the backup used")
+    current_backed_up: int | None = Field(default=None, description="Timestamp of the backup created from the current version before restore, if any")
+
+
+class BackupEntry(BaseModel):
+    """A single backup version of a file (#85 — extrait de backend.main, inchangé)."""
+
+    timestamp: int = Field(description="Unix timestamp of when the backup was created")
+    datetime: str = Field(description="ISO 8601 datetime string")
+    size: int = Field(description="File size in bytes")
+    filename: str = Field(description="Backup filename on disk")
+
+
+class BackupListResponse(BaseModel):
+    """Response listing all available backups for a file (#85 — extrait de backend.main, inchangé)."""
+
+    vault: str = Field(description="Vault name")
+    path: str = Field(description="Relative file path")
+    backups: list[BackupEntry] = Field(description="Available backups, newest first")
+
+
+class DiffRequest(BaseModel):
+    """Request parameters for generating a diff (#85 — extrait de backend.main, inchangé)."""
+
+    version: int = Field(description="Timestamp of the backup version to compare")
+    compare_with: int | None = Field(default=None, description="Timestamp of another backup version. If omitted, compares with the current file.")
+
+
+# ---------------------------------------------------------------------------
+# Files — browse / read (#85 — extrait de backend.main, inchangé)
+# ---------------------------------------------------------------------------
+
+
+class BrowseItem(BaseModel):
+    """A single entry (file or directory) returned by the browse endpoint."""
+
+    name: str = Field(description="File or directory name")
+    path: str = Field(description="Relative path within vault")
+    type: str = Field(description="'file' or 'directory'")
+    children_count: int | None = Field(default=None, description="Number of children (directories only)")
+    size: int | None = Field(default=None, description="File size in bytes")
+    extension: str | None = Field(default=None, description="File extension")
+
+
+class BrowseResponse(BaseModel):
+    """Paginated directory listing for a vault."""
+
+    vault: str
+    path: str
+    items: list[BrowseItem]
+
+
+class FileContentResponse(BaseModel):
+    """Rendered file content with metadata."""
+
+    vault: str = Field(description="Vault name")
+    path: str = Field(description="Relative file path within the vault")
+    title: str = Field(description="File title (from frontmatter or filename)")
+    tags: list[str] = Field(description="Extracted tags from frontmatter and inline #tags")
+    frontmatter: dict[str, Any] = Field(description="YAML frontmatter as key-value dict")
+    html: str = Field(description="Rendered HTML content")
+    raw_length: int = Field(description="Length of raw file content in characters")
+    extension: str = Field(description="File extension (e.g. .md, .txt)")
+    is_markdown: bool = Field(description="Whether the file is markdown")
+    unsupported: bool | None = Field(default=False, description="True for binary/unsupported files")
+    size_bytes: int | None = Field(default=None, description="File size in bytes (for unsupported files)")
+    is_pdf: bool | None = Field(default=None, description="True for PDF files")
+    is_image: bool | None = Field(default=None, description="True for image files")
+    is_audio: bool | None = Field(default=None, description="True for audio files (HTML5 <audio>, roadmap #109)")
+    is_video: bool | None = Field(default=None, description="True for video files (HTML5 <video>, roadmap #109)")
+    media_too_large: bool | None = Field(default=None, description="True when audio/video exceeds the inline streaming limit")
+    stream_url: str | None = Field(default=None, description="Byte-range streaming URL under /api/media (audio/video)")
+    media_mime: str | None = Field(default=None, description="MIME type for audio/video files")
+    is_csv: bool | None = Field(default=None, description="True for CSV files")
+    is_xlsx: bool | None = Field(default=None, description="True for Excel .xlsx files")
+    xlsx_sheets: list[dict[str, Any]] | None = Field(
+        default=None, description="Rendered xlsx sheets [{name, html}]"
+    )
+    is_json: bool | None = Field(default=None, description="True for JSON files")
+    is_excalidraw: bool | None = Field(default=None, description="True for Excalidraw diagram files")
+    excalidraw_data: dict[str, Any] | None = Field(default=None, description="Excalidraw diagram data (elements, appState, files)")
+    excalidraw_data_compressed: str | None = Field(default=None, description="Compressed Excalidraw data for .excalidraw.md files")
+    pdf_metadata: dict[str, Any] | None = Field(default=None, description="PDF metadata")
+    pdf_toc: list[dict[str, Any]] | None = Field(default=None, description="PDF table of contents")
+    image_mime: str | None = Field(default=None, description="MIME type for image files")
+
+
+class FileRawResponse(BaseModel):
+    """Raw text content of a file."""
+
+    vault: str = Field(description="Vault name")
+    path: str = Field(description="Relative file path within the vault")
+    raw: str = Field(description="Raw file content as text")
+
+
+# ---------------------------------------------------------------------------
+# Files — mutations (#85 — extrait de backend.main, inchangé)
+# ---------------------------------------------------------------------------
+
+
+class FileSaveResponse(BaseModel):
+    """Confirmation after saving a file."""
+
+    status: str = Field(description="Always 'ok'")
+    vault: str = Field(description="Vault name")
+    path: str = Field(description="Relative file path within the vault")
+    size: int = Field(description="Size of saved content in characters")
+
+
+class FileDeleteResponse(BaseModel):
+    """Confirmation after deleting a file."""
+
+    status: str = Field(description="Always 'ok'")
+    vault: str = Field(description="Vault name")
+    path: str = Field(description="Relative file path within the vault")
+
+
+class DirectoryCreateRequest(BaseModel):
+    """Request to create a new directory."""
+
+    path: str = Field(description="Relative path of the new directory")
+
+
+class DirectoryCreateResponse(BaseModel):
+    """Response after creating a directory."""
+
+    success: bool = Field(description="Whether creation succeeded")
+    path: str = Field(description="Path of the created directory")
+
+
+class DirectoryRenameRequest(BaseModel):
+    """Request to rename a directory."""
+
+    path: str = Field(description="Current path of the directory")
+    new_name: str = Field(description="New name for the directory")
+
+
+class DirectoryRenameResponse(BaseModel):
+    """Response after renaming a directory."""
+
+    success: bool = Field(description="Whether rename succeeded")
+    old_path: str = Field(description="Original directory path")
+    new_path: str = Field(description="New directory path")
+
+
+class DirectoryDeleteResponse(BaseModel):
+    """Response after deleting a directory."""
+
+    success: bool = Field(description="Whether deletion succeeded")
+    deleted_count: int = Field(description="Number of files recursively deleted")
+
+
+class FileCreateRequest(BaseModel):
+    """Request to create a new file."""
+
+    path: str = Field(description="Relative path of the new file")
+    content: str = Field(default="", description="Initial content")
+
+
+class FileCreateResponse(BaseModel):
+    """Response after creating a file."""
+
+    success: bool = Field(description="Whether creation succeeded")
+    path: str = Field(description="Path of the created file")
+
+
+class BatchUploadFileItem(BaseModel):
+    """A single file/dir entry in a batch upload request."""
+
+    path: str = Field(description="Relative path of the item within the batch")
+    content: str | None = Field(default=None, description="Base64 encoded or text content for files")
+    is_dir: bool = Field(default=False, description="True if entry represents an empty directory")
+
+
+class BatchUploadRequest(BaseModel):
+    """Request payload for batch file/directory upload."""
+
+    target_dir: str = Field(default="", description="Base directory in vault to upload into (empty for root)")
+    files: list[BatchUploadFileItem] = Field(description="List of files and directories to upload")
+    overwrite: bool = Field(default=True, description="Whether to overwrite existing files (creates backups)")
+
+
+class BatchUploadResponse(BaseModel):
+    """Response from batch file/directory upload."""
+
+    success: bool = Field(description="True if all files uploaded without error")
+    vault: str = Field(description="Vault name")
+    target_dir: str = Field(description="Target directory")
+    uploaded: list[str] = Field(description="List of created/updated file paths")
+    created_dirs: list[str] = Field(description="List of created directory paths")
+    errors: list[dict[str, Any]] = Field(default_factory=list, description="List of items that failed")
+    total_files: int = Field(description="Total uploaded files count")
+
+
+class FileRenameRequest(BaseModel):
+    """Request to rename a file."""
+
+    path: str = Field(description="Current path of the file")
+    new_name: str = Field(description="New name for the file")
+
+
+class FileRenameResponse(BaseModel):
+    """Response after renaming a file."""
+
+    success: bool = Field(description="Whether rename succeeded")
+    old_path: str
+    new_path: str
+
+
+class FileMoveRequest(BaseModel):
+    """Request to move a file or directory to a different parent directory."""
+
+    source_path: str = Field(description="Current relative path of the file/directory")
+    destination_dir: str = Field(description="Target directory relative path (empty string for vault root)")
+
+
+class FileMoveResponse(BaseModel):
+    """Response after moving a file or directory."""
+
+    success: bool = Field(description="Whether move succeeded")
+    old_path: str = Field(description="Original path")
+    new_path: str = Field(description="New path after move")
+    item_type: str = Field(description="Type of item moved: 'file' or 'directory'")
+
+
+# ---------------------------------------------------------------------------
+# Vaults & history (#85 — extrait de backend.main, inchangé)
+# ---------------------------------------------------------------------------
+
+
+class VaultInfo(BaseModel):
+    """Summary information about a configured vault."""
+
+    name: str = Field(description="Display name of the vault")
+    file_count: int = Field(description="Number of indexed files")
+    tag_count: int = Field(description="Number of unique tags")
+    type: str = Field(default="VAULT", description="Type of the vault mapping (VAULT or DIR)")
+
+
+class BookmarkToggleRequest(BaseModel):
+    """Request to toggle a bookmark on a file."""
+
+    vault: str
+    path: str
+    title: str | None = None
+
+
+# ---------------------------------------------------------------------------
+# Search / suggest / graph (#85 — extrait de backend.main, inchangé)
+# ---------------------------------------------------------------------------
+
+
+class SearchResultItem(BaseModel):
+    """A single search result."""
+
+    vault: str = Field(description="Vault name")
+    path: str = Field(description="Relative file path")
+    title: str = Field(description="File title")
+    tags: list[str] = Field(description="File tags")
+    score: int = Field(description="Relevance score")
+    snippet: str = Field(description="Content excerpt with highlights")
+    modified: str = Field(description="ISO 8601 modification timestamp")
+
+
+class SearchResponse(BaseModel):
+    """Full-text search response with optional pagination."""
+
+    query: str = Field(description="Original search query")
+    vault_filter: str = Field(description="Vault filter applied ('all' or vault name)")
+    tag_filter: str | None = Field(default=None, description="Tag filter applied")
+    count: int = Field(description="Number of results in this response")
+    total: int = Field(default=0, description="Total results before pagination")
+    offset: int = Field(default=0, description="Current pagination offset")
+    limit: int = Field(default=200, description="Page size")
+    results: list[SearchResultItem] = Field(description="Search result items")
+
+
+class TagsResponse(BaseModel):
+    """Tag aggregation response."""
+
+    vault_filter: str | None = Field(default=None, description="Vault filter applied")
+    tags: dict[str, int] = Field(description="Tag name → count mapping")
+
+
+class TreeSearchResult(BaseModel):
+    """A single tree search result item."""
+
+    vault: str = Field(description="Vault name")
+    path: str = Field(description="Full relative path")
+    name: str = Field(description="File or directory name")
+    type: str = Field(description="'file' or 'directory'")
+    matched_path: str = Field(description="Path segment that matched the query")
+
+
+class TreeSearchResponse(BaseModel):
+    """Tree search response with matching paths."""
+
+    query: str = Field(description="Search query")
+    vault_filter: str = Field(description="Vault filter applied")
+    results: list[TreeSearchResult] = Field(description="Matching files and directories")
+
+
+class VaultPathEntry(BaseModel):
+    """A single indexed path (file or directory) in a vault."""
+
+    vault: str = Field(description="Vault name")
+    path: str = Field(description="Full relative path")
+    name: str = Field(description="File or directory name")
+    type: str = Field(description="'file' or 'directory'")
+
+
+class VaultPathsResponse(BaseModel):
+    """Flat list of every indexed path in a vault (capped)."""
+
+    vault: str = Field(description="Vault name")
+    count: int = Field(description="Number of returned entries")
+    results: list[VaultPathEntry] = Field(description="Indexed files and directories")
+
+
+class AdvancedSearchResultItem(BaseModel):
+    """A single advanced search result with highlighted snippet."""
+
+    vault: str = Field(description="Vault name")
+    path: str = Field(description="Relative file path")
+    title: str = Field(description="File title")
+    tags: list[str] = Field(description="File tags")
+    score: float = Field(description="TF-IDF relevance score (or fused RRF score in semantic mode)")
+    semantic_score: float = Field(default=0.0, description="Cosine similarity from the semantic index (0 when unavailable)")
+    snippet: str = Field(description="Content excerpt with <mark> highlights")
+    modified: str = Field(description="ISO 8601 modification timestamp")
+    extension: str = Field(default="", description="File extension")
+
+
+class SearchFacets(BaseModel):
+    """Faceted counts for search results."""
+
+    tags: dict[str, int] = Field(default_factory=dict)
+    vaults: dict[str, int] = Field(default_factory=dict)
+
+
+class AdvancedSearchResponse(BaseModel):
+    """Advanced search response with TF-IDF scoring, facets, and pagination."""
+
+    results: list[AdvancedSearchResultItem] = Field(description="Search results")
+    total: int = Field(description="Total number of matching results")
+    offset: int = Field(description="Current pagination offset")
+    limit: int = Field(description="Page size")
+    facets: SearchFacets = Field(description="Faceted counts by tag and vault")
+    query_time_ms: float = Field(default=0, description="Server-side query time in milliseconds")
+    semantic_available: bool = Field(default=False, description="True when the semantic (embedding) index is ready")
+
+
+class TitleSuggestion(BaseModel):
+    """A file title suggestion for autocomplete."""
+
+    vault: str = Field(description="Vault name")
+    path: str = Field(description="Relative file path")
+    title: str = Field(description="File title")
+
+
+class SuggestResponse(BaseModel):
+    """Autocomplete suggestions for file titles."""
+
+    query: str = Field(description="Original query string")
+    suggestions: list[TitleSuggestion] = Field(description="Matching file suggestions")
+
+
+class TagSuggestion(BaseModel):
+    """A tag suggestion for autocomplete."""
+
+    tag: str = Field(description="Tag name")
+    count: int = Field(description="Number of files with this tag")
+
+
+class TagSuggestResponse(BaseModel):
+    """Autocomplete suggestions for tags."""
+
+    query: str = Field(description="Original query string")
+    suggestions: list[TagSuggestion] = Field(description="Matching tag suggestions")
+
+
+class GraphNode(BaseModel):
+    """A single node in the graph view."""
+
+    id: str = Field(description="Unique node identifier")
+    name: str = Field(description="Display name")
+    type: str = Field(description="'vault', 'directory', or 'file'")
+    path: str = Field(description="Relative path within vault")
+    size: int = Field(default=0, description="File size in bytes")
+    tags: list[str] = Field(default_factory=list, description="Tags from frontmatter")
+    incoming_count: int = Field(default=0, description="Number of incoming wikilinks")
+    outgoing_count: int = Field(default=0, description="Number of outgoing wikilinks")
+
+
+class GraphEdge(BaseModel):
+    """An edge between two nodes in the graph view."""
+
+    source: str = Field(description="Source node ID")
+    target: str = Field(description="Target node ID")
+    relation: str = Field(description="'parent', 'wikilink', or 'backlink'")
+
+
+class GraphResponse(BaseModel):
+    """Graph data for a vault or directory."""
+
+    vault: str = Field(description="Vault name")
+    path: str = Field(description="Root path for the graph")
+    scope: str = Field(default="directory", description="'directory' or 'full'")
+    nodes: list[GraphNode] = Field(description="Graph nodes (files and directories)")
+    edges: list[GraphEdge] = Field(description="Graph edges (parent and wikilink relations)")
+
+
+class ReloadResponse(BaseModel):
+    """Index reload confirmation with per-vault stats."""
+
+    status: str = Field(description="Reload status ('ok' or 'error')")
+    vaults: dict[str, Any] = Field(description="Per-vault file counts after reload")
+
+
 # ---------------------------------------------------------------------------
 # PDF
 # ---------------------------------------------------------------------------
@@ -395,6 +836,7 @@ class DashboardVaultStat(BaseModel):
    file_count: int
    tag_count: int
    total_size_bytes: int
+    image_count: int = 0


 class DashboardResponse(BaseModel):
@@ -404,6 +846,32 @@ class DashboardResponse(BaseModel):
    total_files: int
    total_tags: int
    total_size_bytes: int
+    total_images: int = 0
+
+
+# ---------------------------------------------------------------------------
+# System / health (#85 — extrait de backend.main, comportement inchangé)
+# ---------------------------------------------------------------------------
+
+
+class HealthResponse(BaseModel):
+    """Application health status.
+
+    Déplacé depuis :mod:`backend.main` sans modification : pas de
+    ``extra="allow"`` ici, pour préserver la validation actuelle des
+    réponses (les champs enrichis de ``/api/health/detailed`` restent
+    filtrés comme avant).
+    """
+
+    status: str = Field(description="Health status ('ok' or 'error')")
+    version: str = Field(description="Application version (x.y.z — latest release tag)")
+    vaults: int = Field(description="Number of configured vaults")
+    total_files: int = Field(description="Total indexed files across all vaults")
+    total_tokens: int = Field(description="Total indexed tokens (approx.) across all vaults", default=0)
+    last_full_index_ts: str = Field(description="ISO timestamp of last full index rebuild", default="")
+    uptime_seconds: int = Field(description="Server uptime in seconds", default=0)
+    git_describe: str = Field(default="", description="Full git describe string (commits beyond tag), empty if no git")
+    git_commit: str = Field(default="", description="Short HEAD commit hash, empty if no git")


 # ---------------------------------------------------------------------------
@@ -0,0 +1,35 @@
+"""Shared thread pool for CPU-bound search (ROADMAP #85, tranche 5).
+
+Holder extrait de :mod:`backend.main` sans changement de comportement :
+un seul pool (2 workers, préfixe ``"search"``) créé au démarrage et arrêté
+à l'extinction par le lifespan de ``main``. Les routers et les endpoints
+restants y accèdent via :func:`get_search_executor` au lieu du global de
+``main`` (plus d'import circulaire potentiel).
+"""
+
+from __future__ import annotations
+
+from concurrent.futures import ThreadPoolExecutor
+
+_executor: ThreadPoolExecutor | None = None
+
+
+def init_search_executor(max_workers: int = 2) -> ThreadPoolExecutor:
+    """Create (or reuse) the shared search thread pool."""
+    global _executor
+    if _executor is None:
+        _executor = ThreadPoolExecutor(max_workers=max_workers, thread_name_prefix="search")
+    return _executor
+
+
+def shutdown_search_executor() -> None:
+    """Stop the shared search thread pool (best-effort, non-blocking)."""
+    global _executor
+    if _executor is not None:
+        _executor.shutdown(wait=False)
+        _executor = None
+
+
+def get_search_executor() -> ThreadPoolExecutor | None:
+    """Return the shared search thread pool (``None`` before startup)."""
+    return _executor
@@ -31,7 +31,7 @@ DEFAULT_MAX_BACKUPS = 10
 def _default_max_backups() -> int:
    """Read ``max_backups_per_file`` from app config (lazy, best-effort)."""
    try:
-        from backend.main import _load_config
+        from backend.routers.config import _load_config  # ROADMAP #85 T7 — déménagé depuis backend.main

        return int(_load_config().get("max_backups_per_file", DEFAULT_MAX_BACKUPS))
    except Exception:  # pragma: no cover - config unavailable
@@ -14,6 +14,7 @@ from __future__ import annotations

 import logging
 import os
+import re
 import shutil
 from collections.abc import Callable
 from pathlib import Path
@@ -223,6 +224,102 @@ def edit_file(
    return {"success": True, "vault": vault_name, "path": rel_path, "size": len(content)}


+# Cell reference like "A1" / "AB42" (Excel A1 notation, up to 3 letters / 8 digits).
+_XLSX_CELL_RE = re.compile(r"^[A-Z]{1,3}[1-9][0-9]{0,7}$")
+# ponytail: bare int/float coercion mirrors what Excel does when you type a
+# number; dates/booleans stay text (upgrade path: parse locale dates too).
+_XLSX_INT_RE = re.compile(r"^[+-]?\d+$")
+_XLSX_FLOAT_RE = re.compile(r"^[+-]?(?:\d+\.\d*|\.\d+)$")
+
+
+def _coerce_xlsx_value(value: Any) -> Any:
+    """Turn the string sent by the cell editor back into a scalar."""
+    if not isinstance(value, str):
+        return value
+    text = value.strip()
+    if text == "":
+        return None
+    if _XLSX_INT_RE.match(text):
+        return int(text)
+    if _XLSX_FLOAT_RE.match(text):
+        return float(text)
+    return value
+
+
+def edit_xlsx_cells(
+    vault_name: str,
+    path: str,
+    sheet: str,
+    cells: dict[str, Any],
+    *,
+    backup: bool = True,
+) -> dict[str, Any]:
+    """Apply a batch of cell edits to an ``.xlsx`` workbook.
+
+    Raises:
+        ServiceError: ``not_found`` (404), ``read_only`` (403) or
+        ``invalid`` (400) for a bad sheet, cell reference or value.
+
+    ponytail: openpyxl round-trips values/formulas/styles but drops charts,
+    images and pivot tables; use the SheetJS path if a workbook needs those.
+    """
+    root = get_vault_root(vault_name)
+    _ensure_writable(root)
+    file_path = resolve_safe_path(root, path)
+
+    if not file_path.exists() or not file_path.is_file():
+        raise ServiceError(
+            f"File not found: {path}",
+            code="not_found",
+            status=404,
+            details={"vault": vault_name, "path": path},
+        )
+    if file_path.suffix.lower() != ".xlsx":
+        raise ServiceError(
+            f"Not an .xlsx file: {path}", code="invalid", status=400
+        )
+    if not cells:
+        raise ServiceError("No cells to update", code="invalid", status=400)
+    for ref in cells:
+        if not isinstance(ref, str) or not _XLSX_CELL_RE.match(ref):
+            raise ServiceError(
+                f"Invalid cell reference: {ref!r}", code="invalid", status=400
+            )
+
+    from openpyxl import load_workbook
+
+    try:
+        wb = load_workbook(file_path)
+    except Exception as exc:
+        raise ServiceError(
+            f"Cannot open workbook: {exc}", code="invalid", status=400
+        ) from exc
+    if sheet not in wb.sheetnames:
+        raise ServiceError(
+            f"Unknown sheet: {sheet}",
+            code="invalid",
+            status=400,
+            details={"sheets": wb.sheetnames},
+        )
+
+    rel_path = _rel(root, file_path)
+    if backup:
+        create_backup(file_path, vault_name, rel_path)
+
+    ws = wb[sheet]
+    for ref, value in cells.items():
+        ws[ref].value = _coerce_xlsx_value(value)
+    wb.save(file_path)
+
+    logger.info(f"XLSX cells saved: {vault_name}/{rel_path} [{sheet}] +{len(cells)}")
+    return {
+        "success": True,
+        "vault": vault_name,
+        "path": rel_path,
+        "size": len(cells),
+    }
+
+
 def append_to_file(
    vault_name: str,
    path: str,
@@ -10,6 +10,7 @@ No authentication required for public share views.
 import json
 import logging
 import secrets
+import threading
 from datetime import datetime, timedelta, timezone
 from pathlib import Path

@@ -17,6 +18,10 @@ logger = logging.getLogger("obsigate.share")

 SHARES_FILE = Path("data/shares.json")

+# ROADMAP #85 T10a — verrou autour des read-modify-write (perte de mises à
+# jour en cas de créations/accès/révocations concurrents).
+_lock = threading.RLock()
+

 def _read() -> dict:
    if not SHARES_FILE.exists():
@@ -41,26 +46,27 @@ def create_share(
    expires_in_hours: int | None = None,
 ) -> dict:
    """Create a new share token for a document."""
-    data = _read()
-    token = secrets.token_hex(32)  # 64-char hex token
+    with _lock:
+        data = _read()
+        token = secrets.token_hex(32)  # 64-char hex token

-    expires_at = None
-    if expires_in_hours:
-        expires_at = (datetime.now(timezone.utc) + timedelta(hours=expires_in_hours)).isoformat()
+        expires_at = None
+        if expires_in_hours:
+            expires_at = (datetime.now(timezone.utc) + timedelta(hours=expires_in_hours)).isoformat()

-    share = {
-        "id": token,
-        "token": token,
-        "vault": vault,
-        "path": path,
-        "created_by": created_by,
-        "created_at": datetime.now(timezone.utc).isoformat(),
-        "expires_at": expires_at,
-        "access_count": 0,
-        "last_accessed": None,
-    }
-    data["shares"][token] = share
-    _write(data)
+        share = {
+            "id": token,
+            "token": token,
+            "vault": vault,
+            "path": path,
+            "created_by": created_by,
+            "created_at": datetime.now(timezone.utc).isoformat(),
+            "expires_at": expires_at,
+            "access_count": 0,
+            "last_accessed": None,
+        }
+        data["shares"][token] = share
+        _write(data)
    logger.info(f"Created share for {vault}/{path} by {created_by}")
    return share

@@ -80,22 +86,24 @@ def get_share_by_token(token: str) -> dict | None:

 def record_access(token: str):
    """Increment access counter for a share."""
-    data = _read()
-    share = data["shares"].get(token)
-    if share:
-        share["access_count"] = share.get("access_count", 0) + 1
-        share["last_accessed"] = datetime.now(timezone.utc).isoformat()
-        _write(data)
+    with _lock:
+        data = _read()
+        share = data["shares"].get(token)
+        if share:
+            share["access_count"] = share.get("access_count", 0) + 1
+            share["last_accessed"] = datetime.now(timezone.utc).isoformat()
+            _write(data)


 def revoke_share(share_id: str) -> bool:
    """Revoke (delete) a share by its token."""
-    data = _read()
-    if share_id in data["shares"]:
-        del data["shares"][share_id]
-        _write(data)
-        logger.info(f"Revoked share {share_id}")
-        return True
+    with _lock:
+        data = _read()
+        if share_id in data["shares"]:
+            del data["shares"][share_id]
+            _write(data)
+            logger.info(f"Revoked share {share_id}")
+            return True
    return False


@@ -112,12 +120,13 @@ def list_shares(vault_filter: str | None = None) -> list:

 def update_shares_after_rename(vault: str, old_path: str, new_path: str):
    """Update all shares when a file is renamed."""
-    data = _read()
-    updated = False
-    for sid, s in data["shares"].items():
-        if s.get("vault") == vault and s.get("path") == old_path:
-            s["path"] = new_path
-            updated = True
-            logger.info(f"Updated share {sid}: {vault}/{old_path} -> {new_path}")
-    if updated:
-        _write(data)
+    with _lock:
+        data = _read()
+        updated = False
+        for sid, s in data["shares"].items():
+            if s.get("vault") == vault and s.get("path") == old_path:
+                s["path"] = new_path
+                updated = True
+                logger.info(f"Updated share {sid}: {vault}/{old_path} -> {new_path}")
+        if updated:
+            _write(data)
@@ -0,0 +1,54 @@
+"""Server-Sent Events manager (ROADMAP #85, tranche 4).
+
+Singleton extrait de :mod:`backend.main` sans changement de comportement :
+les routers montés par ``main`` partagent la même instance (les clients SSE
+connectés sur ``/api/events`` reçoivent les broadcasts émis depuis
+n'importe quel router).
+"""
+
+from __future__ import annotations
+
+import asyncio
+import json as _json
+import logging
+
+logger = logging.getLogger("obsigate")
+
+
+class SSEManager:
+    """Manages SSE client connections and broadcasts events."""
+
+    def __init__(self):
+        self._clients: list[asyncio.Queue] = []
+
+    async def connect(self) -> asyncio.Queue:
+        """Register a new SSE client and return its message queue."""
+        queue: asyncio.Queue = asyncio.Queue()
+        self._clients.append(queue)
+        logger.debug(f"SSE client connected (total: {len(self._clients)})")
+        return queue
+
+    def disconnect(self, queue: asyncio.Queue):
+        """Remove a disconnected SSE client."""
+        if queue in self._clients:
+            self._clients.remove(queue)
+        logger.debug(f"SSE client disconnected (total: {len(self._clients)})")
+
+    async def broadcast(self, event_type: str, data: dict):
+        """Send an event to all connected SSE clients."""
+        message = _json.dumps(data, ensure_ascii=False)
+        dead: list[asyncio.Queue] = []
+        for q in self._clients:
+            try:
+                q.put_nowait({"event": event_type, "data": message})
+            except asyncio.QueueFull:
+                dead.append(q)
+        for q in dead:
+            self.disconnect(q)
+
+    @property
+    def client_count(self) -> int:
+        return len(self._clients)
+
+
+sse_manager = SSEManager()
@@ -19,7 +19,9 @@ import io
 import logging
 import re
 from typing import Any
-from xml.sax import saxutils
+
+# saxutils.escape uniquement (échappement de chaînes, aucun parsing XML).
+from xml.sax import saxutils  # nosec B406

 from backend.services.errors import ServiceError
 from backend.services.mutations import save_raw_file
@@ -17,6 +17,7 @@ from __future__ import annotations
 import json
 import logging
 import os
+import threading
 from pathlib import Path

 logger = logging.getLogger("obsigate.tools.secrets")
@@ -34,6 +35,9 @@ TOOL_KEY_NAMES: tuple[str, ...] = (

 _SECRET_MARKERS = ("API_KEY", "TOKEN")

+# ROADMAP #85 T10a — verrou autour des read-modify-write du store de clés.
+_lock = threading.RLock()
+

 def _keys_file() -> Path:
    base = os.environ.get("OBSIGATE_DATA_DIR", "data")
@@ -89,21 +93,23 @@ def set_tool_key(name: str, value: str) -> None:
    if name not in TOOL_KEY_NAMES:
        raise ValueError(f"Clé non prise en charge: {name}")
    value = (value or "").strip()
-    keys = _read_keys()
-    if value:
-        keys[name] = value
-    else:
-        keys.pop(name, None)
-    _write_keys(keys)
+    with _lock:
+        keys = _read_keys()
+        if value:
+            keys[name] = value
+        else:
+            keys.pop(name, None)
+        _write_keys(keys)


 def delete_tool_key(name: str) -> bool:
    """Remove one key from the store; return True when it existed."""
    if name not in TOOL_KEY_NAMES:
        raise ValueError(f"Clé non prise en charge: {name}")
-    keys = _read_keys()
-    if name in keys:
-        del keys[name]
-        _write_keys(keys)
-        return True
+    with _lock:
+        keys = _read_keys()
+        if name in keys:
+            del keys[name]
+            _write_keys(keys)
+            return True
    return False
@@ -22,7 +22,7 @@ Exemples :
 from __future__ import annotations

 import os
-import subprocess
+import subprocess  # nosec B404
 from pathlib import Path

 _ROOT = Path(__file__).resolve().parent.parent          # racine du dépôt ObsiGate
@@ -34,7 +34,8 @@ _ENV_VAR = "OBSIGATE_VERSION"
 def _run_git(args: list[str]) -> str:
    """Run a git command in the repo root; return stdout (stripped) or ''."""
    try:
-        result = subprocess.run(
+        # argv fixe (git + args internes), sans shell : pas d'injection.
+        result = subprocess.run(  # nosec B404 B603 B607
            ["git", *args],
            cwd=str(_ROOT),
            capture_output=True,
@@ -280,7 +280,8 @@ class VaultWatcher:
        for observer in self.observers.values():
            try:
                observer.join(timeout=5)
-            except Exception:  # nosec B110 — best-effort shutdown, ignore failures
+            # best-effort shutdown, ignore failures (B110) :
+            except Exception:  # nosec B110
                pass
        self.observers.clear()
        logger.info("VaultWatcher stopped")
@@ -0,0 +1,28 @@
+"""Shared VaultWatcher handle (ROADMAP #85, tranche 8).
+
+Holder extrait de :mod:`backend.main` sans changement de comportement : le
+lifespan de ``main`` y dépose l'instance (``set_watcher``) et l'y reprend à
+l'extinction ; le router ``vaults`` la consulte via :func:`get_watcher`
+(démarrage/arrêt de surveillance à l'ajout/retrait dynamique de vault,
+état dans ``/api/vaults/status``).
+"""
+
+from __future__ import annotations
+
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from backend.watcher import VaultWatcher
+
+_watcher: VaultWatcher | None = None
+
+
+def get_watcher() -> VaultWatcher | None:
+    """Return the shared VaultWatcher instance (``None`` if disabled)."""
+    return _watcher
+
+
+def set_watcher(watcher: VaultWatcher | None) -> None:
+    """Store (or clear) the shared VaultWatcher instance."""
+    global _watcher
+    _watcher = watcher
@@ -26,6 +26,7 @@ import json
 import logging
 import os
 import socket
+import threading
 import uuid
 from datetime import datetime, timezone
 from pathlib import Path
@@ -144,6 +145,12 @@ def _read_secrets() -> dict:
        return {}


+# ROADMAP #85 T10a — verrou autour des read-modify-write des deux stores
+# (webhooks + secrets) : perte de mises à jour en cas de mutations
+# concurrentes.
+_lock = threading.RLock()
+
+
 def _write_secrets(secrets: dict):
    WEBHOOK_SECRETS_FILE.parent.mkdir(parents=True, exist_ok=True)
    tmp = WEBHOOK_SECRETS_FILE.with_suffix(".tmp")
@@ -156,12 +163,13 @@ def _write_secrets(secrets: dict):


 def _store_secret(wh_id: str, secret: str | None) -> None:
-    secrets = _read_secrets()
-    if secret:
-        secrets[wh_id] = secret
-    else:
-        secrets.pop(wh_id, None)
-    _write_secrets(secrets)
+    with _lock:
+        secrets = _read_secrets()
+        if secret:
+            secrets[wh_id] = secret
+        else:
+            secrets.pop(wh_id, None)
+        _write_secrets(secrets)


 def _get_secret(wh: dict) -> str | None:
@@ -189,52 +197,55 @@ def get_webhooks() -> list:

 def create_webhook(name: str, url: str, events: list[str], secret: str | None = None) -> dict:
    validate_webhook_url(url)
-    webhooks = _read()
-    wh_id = str(uuid.uuid4())
-    wh = {
-        "id": wh_id,
-        "name": name,
-        "url": url,
-        "events": [e for e in events if e in VALID_EVENTS],
-        "enabled": True,
-        "created_at": datetime.now(timezone.utc).isoformat(),
-        "last_fired_at": None,
-    }
-    webhooks.append(wh)
-    _write(webhooks)
-    if secret:
-        _store_secret(wh_id, secret)
+    with _lock:
+        webhooks = _read()
+        wh_id = str(uuid.uuid4())
+        wh = {
+            "id": wh_id,
+            "name": name,
+            "url": url,
+            "events": [e for e in events if e in VALID_EVENTS],
+            "enabled": True,
+            "created_at": datetime.now(timezone.utc).isoformat(),
+            "last_fired_at": None,
+        }
+        webhooks.append(wh)
+        _write(webhooks)
+        if secret:
+            _store_secret(wh_id, secret)
    logger.info(f"Created webhook '{name}' → {url}")
    return _public_view(wh)


 def update_webhook(wh_id: str, updates: dict) -> dict | None:
-    webhooks = _read()
-    for wh in webhooks:
-        if wh["id"] == wh_id:
-            if updates.get("url"):
-                validate_webhook_url(updates["url"])
-            if "secret" in updates:
-                _store_secret(wh_id, updates["secret"])
-            safe_updates = {
-                k: v for k, v in updates.items()
-                if k not in ("id", "secret")
-            }
-            wh.update(safe_updates)
-            _write(webhooks)
-            return _public_view(wh)
+    with _lock:
+        webhooks = _read()
+        for wh in webhooks:
+            if wh["id"] == wh_id:
+                if updates.get("url"):
+                    validate_webhook_url(updates["url"])
+                if "secret" in updates:
+                    _store_secret(wh_id, updates["secret"])
+                safe_updates = {
+                    k: v for k, v in updates.items()
+                    if k not in ("id", "secret")
+                }
+                wh.update(safe_updates)
+                _write(webhooks)
+                return _public_view(wh)
    return None


 def delete_webhook(wh_id: str) -> bool:
-    webhooks = _read()
-    new_list = [wh for wh in webhooks if wh["id"] != wh_id]
-    if len(new_list) == len(webhooks):
-        return False
-    _write(new_list)
-    secrets = _read_secrets()
-    if secrets.pop(wh_id, None) is not None:
-        _write_secrets(secrets)
+    with _lock:
+        webhooks = _read()
+        new_list = [wh for wh in webhooks if wh["id"] != wh_id]
+        if len(new_list) == len(webhooks):
+            return False
+        _write(new_list)
+        secrets = _read_secrets()
+        if secrets.pop(wh_id, None) is not None:
+            _write_secrets(secrets)
    return True


@@ -0,0 +1,86 @@
+"""Render ``.xlsx`` workbooks as HTML tables for the viewer (#xlsx).
+
+Read-only: formulas are shown as their text (``data_only=False``) so a
+round-trip through the viewer never depends on Excel's cached values.
+Write-side lives in ``backend.services.mutations.edit_xlsx_cells``.
+"""
+
+from __future__ import annotations
+
+import html
+from datetime import date, datetime
+from pathlib import Path
+from typing import Any
+
+from openpyxl import load_workbook
+from openpyxl.utils import get_column_letter
+
+# ponytail: hard caps bound the rendered grid (500 rows x 40 cols per sheet).
+# Raise them, or paginate per sheet, if a real workbook needs more.
+MAX_ROWS = 500
+MAX_COLS = 40
+
+
+def _fmt(value: Any) -> str:
+    if value is None:
+        return ""
+    if isinstance(value, datetime):
+        return value.strftime("%Y-%m-%d %H:%M")
+    if isinstance(value, date):
+        return value.isoformat()
+    return str(value)
+
+
+def _trim(grid: list[list[str]]) -> list[list[str]]:
+    """Drop trailing empty rows and columns (openpyxl pads to max_col)."""
+    while grid and not any(grid[-1]):
+        grid.pop()
+    if not grid:
+        return grid
+    width = 0
+    for row in grid:
+        for i in range(len(row) - 1, -1, -1):
+            if row[i]:
+                width = max(width, i + 1)
+                break
+    return [row[:width] for row in grid]
+
+
+def _table(grid: list[list[str]]) -> str:
+    if not grid:
+        return "<p><em>Feuille vide</em></p>"
+    n_cols = max(len(row) for row in grid)
+    out = [
+        (
+            '<div class="csv-table-wrapper"><table class="csv-table xlsx-table">'
+            '<thead><tr><th class="xlsx-corner"></th>'
+        )
+    ]
+    out += [f"<th>{get_column_letter(c)}</th>" for c in range(1, n_cols + 1)]
+    out.append("</tr></thead><tbody>")
+    for r, row in enumerate(grid, start=1):
+        out.append(f'<tr><th class="xlsx-rownum">{r}</th>')
+        for c, val in enumerate(row, start=1):
+            ref = f"{get_column_letter(c)}{r}"
+            out.append(f'<td data-cell="{ref}">{html.escape(val)}</td>')
+        out.append("</tr>")
+    out.append("</tbody></table></div>")
+    return "".join(out)
+
+
+def render_sheets(file_path: Path) -> list[dict[str, str]]:
+    """Return ``[{"name": sheet_title, "html": table_html}, ...]``."""
+    wb = load_workbook(str(file_path), read_only=True, data_only=False)
+    try:
+        sheets = []
+        for ws in wb.worksheets:
+            grid = [
+                [_fmt(v) for v in row]
+                for row in ws.iter_rows(
+                    min_row=1, max_row=MAX_ROWS, max_col=MAX_COLS, values_only=True
+                )
+            ]
+            sheets.append({"name": ws.title, "html": _table(_trim(grid))})
+        return sheets
+    finally:
+        wb.close()
@@ -2626,7 +2626,7 @@ dependencies = [

 [[package]]
 name = "obsigate-desktop"
-version = "2.16.6"
+version = "2.28.4"
 dependencies = [
 "chrono",
 "env_logger",
@@ -1,6 +1,6 @@
 [package]
 name = "obsigate-desktop"
-version = "2.16.6"
+version = "2.28.4"
 description = "ObsiGate Desktop — Porte d'entrée native pour vos vaults Obsidian"
 authors = ["Bruno Charest"]
 edition = "2021"
@@ -1,7 +1,7 @@
 {
  "$schema": "https://raw.githubusercontent.com/nicedoc/obsigate/main/desktop/tauri.conf.schema.json",
  "productName": "ObsiGate",
-  "version": "2.16.6",
+  "version": "2.28.4",
  "identifier": "com.obsigate.desktop",
  "build": {
    "frontendDist": "../frontend",
@@ -221,6 +221,10 @@ Gestion :
 | `/api/auth/admin/users/{u}` | Modifier / supprimer | PATCH/DELETE | Admin |
 | `/api/admin/stats` · `/audit` · `/backup-stats` · `/stream` | Monitoring admin | GET | Admin |

+> `PATCH /api/auth/me` accepte `{"avatar": "<data-url>"}` (PNG/JPEG/WebP, 400 000
+> caractères max, octets magiques contrôlés) ; `{"avatar": ""}` supprime la photo.
+> La valeur est renvoyée par `GET /api/auth/me` et par le payload `user` du login.
+
 ### 3.10 Partage, webhooks, conflits, plugins, push

 | Endpoint | Description | Méthode |
@@ -67,6 +67,11 @@ CHANGE THIS PASSWORD on first login!

 Changez-le immédiatement (menu profil → *Changer le mot de passe*).

+Vous pouvez aussi ajouter une **photo de profil** : *Configurations → Profil →
+Choisir une image* (PNG, JPG ou WEBP, 8 Mo maximum — recadrée en carré 256 px).
+Elle remplace les initiales dans le cercle du compte en bas de la sidebar et peut
+être supprimée à tout moment depuis la même section.
+
 ---

 ## 3. Gestion des utilisateurs
@@ -142,6 +142,12 @@ Elle regroupe les vues principales via des icônes :
 Un champ **« Filtrer fichiers… »** restreint l'arborescence en temps réel, et le
 bouton **Aa** ajuste l'affichage des libellés.

+En bas de la sidebar (si l'authentification est activée), la **section compte**
+affiche votre avatar (ou vos initiales), votre nom et votre rôle ; un clic ouvre
+le profil. La photo se choisit dans **Configurations → Profil** (*Choisir une
+image* : PNG, JPG ou WEBP — recadrée en carré 256 px, affichée dans le cercle de
+la sidebar) ; le bouton *Se déconnecter* est juste à côté.
+
 ### 5.3 La zone de contenu

 Elle affiche l'onglet actif : tableau de bord **Statistiques**, **Bookmarks**,
@@ -14,7 +14,7 @@

 - **Projet** : ObsiGate — Porte d'entrée web pour vaults Obsidian
 - **Stack** : Python 3.11+ (backend FastAPI) · JavaScript/Vanilla (frontend) · Tauri/Rust (desktop)
- **Dernière mise à jour** : 2026-09-17
+- **Dernière mise à jour** : 2026-09-24

 ---

@@ -180,7 +180,15 @@ Avant de corriger quoi que ce soit, un agent IA doit :
 | *BUG-069* | Login 2FA bloqué sans erreur : après user+pwd corrects, la page de login reste affichée et le challenge MFA n'apparaît jamais | 🟢 corrigé | P0 | 📱 frontend | IA | `frontend/js/auth.js`, `frontend/index.html` | Activer 2FA → logout → login (bon user+pwd) | `frontend/js/auth.js` (`showMfaChallenge` → `.login-card` + erreur `mfa.challenge_unavailable` si montage impossible), locales FR/EN ; tests `tests/frontend/mfa-settings.test.mjs` (+2) | Reproduit au navigateur avant correctif (challenge jamais affiché), vérifié après : challenge affiché, code erroné → erreur, code valide (200) → app ; frontend mfa-settings 11/11, unit + validate-imports verts |
 | *BUG-070* | Activation clé physique WebAuthn impossible : « Validation du credential WebAuthn échouée » à chaque tentative | 🟢 corrigé | P0 | ⚙️ backend | IA | `backend/auth/webauthn_mfa.py`, `backend/auth/router.py` | Config → Sécurité → Ajouter une clé → cérémonie navigateur → 400 | `resolve_relying_party()` (rp_id/origines dérivés de la requête, config explicite prioritaire, forwarded si TRUST_PROXY) sur les 4 endpoints ; challenges multiples (5 derniers) acceptés ; `.env.example` ; tests `tests/test_webauthn.py` (+8) | Logs : origin `http://localhost:2020` rejetée + challenge mismatch au retry. Vérifié navigateur (authentificateur virtuel CDP) : register 200 + clé listée, clé de test retirée (admin de nouveau TOTP seul) ; pytest 1249 passed, ruff/mypy 0 |
 | *BUG-071* | Configuration « Configurations » inutilisable en mode mobile : sommaire masqué sans bouton d'accès, navigation par ancre sans JS, grilles 2 colonnes et rangées d'ajout qui débordent (≤768px) | 🟢 corrigé | P1 | 📱 frontend | IA | `frontend/index.html`, `frontend/js/config.js`, `frontend/js/i18n.js`, `frontend/style.css`, `frontend/locales/{fr,en}.json` | Mobile (≤768px) : ouvrir Configurations → aucun sommaire ni moyen d'atteindre une section ; champs « Clés IA » / jetons / webhooks débordent | `index.html` (+`#config-hamburger` `.help-hamburger`, `config.toc_toggle` FR/EN) ; `config.js` (toggle, scroll doux + actif + repli auto mobile, reset à l'ouverture) ; `i18n.js` (`data-i18n-attr` multi-paires `;`) ; `style.css` (bloc mobile `#config-modal` : sommaire haut 46vh, grilles 1fr, add-rows wrap + `!important`, items wrap, 44px) ; tests `tests/frontend/config-mobile.test.mjs` (nouveau, 11) + CI ; E2E `tests/e2e/config-mobile.spec.js` (nouveau, 3/3 projet chromium-mobile, ignoré en desktop) | pytest 1249 passed / 6 skipped, ruff 0, mypy 0, validate-imports 39 modules, unit 10/10, JSDOM ai 93/93 + sidebar 6/6 + mobile 35/35 + ai-keys 7/7 |
+| *BUG-072* | Visionneuse d'images : le plein écran et le panneau « Métadonnées » ne sont pas conservés lors de la navigation ←/→, et le panneau s'affiche sous la pellicule au lieu d'une barre latérale | 🟢 corrigé | P2 | 📱 frontend | IA | `frontend/js/viewer.js`, `frontend/style.css` | Ouvrir une image, activer le plein écran (ou Métadonnées), puis naviguer avec les flèches précédent/suivant | État persistant `_imageViewerState { lightbox, meta }` + drapeau `_imageViewerNavPending` posé par `go()`/pellicule : `renderFile` ne réinitialise que hors navigation image→image. Panneau reconstruit dans `.image-viewer-body` (sidebar droite, `border-left`, `width:280px; max-width:40%`) ; la règle lightbox ne masque plus que la pellicule. Boutons `image-btn-lightbox`/`image-btn-metadata` (+ `aria-pressed`), `Escape` resynchronisé. Tests : `tests/frontend/image-viewer.test.mjs` (+2), E2E `tests/e2e/image-viewer.spec.js` (+1). | Navigation → `openFile` → `renderImageViewer` recréait le conteneur : les états `lightbox`/`metaPanel` étaient perdus. Le panneau était rendu en bas (colonne) au lieu d'une sidebar droite |
+| *BUG-073* | Mobile : la barre de navigation fixe du bas masque le bas de tous les documents et pages affichés (les dernières lignes restent définitivement sous la barre) | 🟢 corrigé | P1 | 📱 frontend | IA | `frontend/style.css` | Mobile (≤768px) : ouvrir un document long, défiler jusqu'au bas → la fin du contenu passe sous la barre `#mobile-toolbar` et n'est jamais atteignable | Clearance mobile retargetée de `.main-layout` (sélecteur mort, absent de `index.html`) vers `.main-body` (`calc(64px + env(safe-area-inset-bottom, 0))`) ; règle sœur morte `.editor-modal.active ~ .main-layout` supprimée ; reset `body.reading-mode .main-body { padding-bottom: 0 }` (barre masquée en mode lecture) ; `body.np-active .content-area` ramené à `76px` (dégagement dock seul, géométrie totale inchangée). Tests : `tests/frontend/mobile-toolbar.test.mjs` (7, au CI), E2E `tests/e2e/mobile-toolbar.spec.js` (2, `chromium-mobile`, skip desktop) | La règle de clearance du bloc mobile cible `.main-layout`, classe absente de `index.html` (vrai conteneur : `.main-body`) → sélecteur mort, aucun dégagement réservé |
 |  | | | | | | | | | | |
+| *BUG-074* | [🟡 IMPORTANT] Assistant IA : le bloc d'étapes affiche « 1 step » sans titre alors que l'agent réalise plusieurs actions (compteur toujours à 1) | 🟢 corrigé | P1 | 📱 frontend + ⚙️ backend | IA | `frontend/js/bookslm.js`, `backend/agent/loop.py` | Mode agent : demander une création multi-fichiers/dossiers → chaque message ne montre qu'« 1 étape ▶ » sans détail | `backend/agent/loop.py` + `frontend/js/bookslm.js` : compteur = actions (hors réflexions) + titre = 1re action dans le `<summary>` ; reprise de confirmation diffusée dans le **même** message (fusion des étapes). Tests : `tests/frontend/ai.test.mjs` (+3) | Le résumé `<summary>` ne porte aucun titre ; chaque reprise de confirmation crée un **nouveau** message assistant qui ne contient qu'une action ; les réflexions gonflent le compteur |
+| *BUG-075* | [🟡 IMPORTANT] Assistant IA : chaque action mutatrice demande son propre « Appliquer » — aucun résumé des actions en attente ni approbation globale | 🟢 corrigé | P1 | ⚙️ backend + 📱 frontend | IA | `backend/agent/loop.py`, `backend/bookslm_routes.py`, `frontend/js/bookslm.js` | Mode agent : demander une structure de répertoires multi-fichiers → valider une action après l'autre | `backend/agent/loop.py` (`pending.actions`, lot exécuté au resume) ; `backend/bookslm_routes.py` (`confirm_all` → `ctx.confirmed`) ; `frontend/js/bookslm.js` (carte multi-actions + « Tout approuver (N) »). Tests : `tests/test_agent_loop.py`, `tests/test_bookslm.py`, `tests/frontend/ai.test.mjs` | La pause de confirmation ne capture que le **premier** appel mutateur du lot (les suivants sont `deferred`) ; carte unique sans liste ; nouveau `confirm_all` à ajouter pour autoriser la suite de l'exécution en une approbation |
+| *BUG-076* | [🟡 IMPORTANT] Assistant IA : après une action de l'agent, l'arborescence et le document ouvert ne sont pas rafraîchis dynamiquement | 🟢 corrigé | P1 | 📱 frontend | IA | `frontend/js/bookslm.js` | Mode agent : créer/supprimer un fichier ou dossier, modifier le document ouvert → l'UI ne bouge pas | `frontend/js/bookslm.js` : `MUTATING_TOOLS`/`FILE_WRITE_TOOLS`, refresh d'arborescence débouncé sur event `tool`, `_notifyFileWritten` étendu (xlsx/docx/csv/pdf). Tests : `tests/frontend/ai.test.mjs`, `tests/frontend/editor-inline.test.mjs` | Aucun refresh explicite sur les événements `tool` mutateurs (repose uniquement sur le watcher SSE) ; `_notifyFileWritten` ignore les créations de documents (xlsx/docx/csv/pdf) |
+| *BUG-077* | [🟡 IMPORTANT] Assistant IA : aucun bouton « Stop » pour arrêter l'exécution de l'agent à tout moment | 🟢 corrigé | P1 | 📱 frontend | IA | `frontend/js/bookslm.js` | Mode agent : lancer une longue tâche → le bouton Envoyer est désactivé, impossible d'arrêter (seule la fermeture du panneau abort) | `frontend/js/bookslm.js` + `frontend/style.css` : bouton d'envoi → Stop (`_syncSendButton`/`_stopGeneration`/`_markStopped`), i18n `ai.stop`/`ai.stopped`. Tests : `tests/frontend/ai.test.mjs` (+2) | `_abortCtrl` n'est déclenché que par `close()` ; aucun signal d'arrêt côté client pendant le stream |
+| *BUG-078* | [🟡 IMPORTANT] Fichiers de code : la coloration syntaxique (highlight.js) disparaît — les feuilles de thème sont basculées à partir de la **clé** de thème au lieu du **mode** | 🟢 corrigé | P1 | 📱 frontend | IA | `frontend/js/themes.js`, `frontend/js/ui.js`, `tests/frontend/unit.test.mjs` | Ouvrir un fichier `.py`/`.sh`/`.ps1`/`.yml` : le code s'affiche en texte brut, sans couleurs | `frontend/js/themes.js` : `applyTheme` bascule `hljs-theme-dark`/`hljs-theme-light` selon le **mode** (`isDark`). `frontend/js/ui.js` : `initTheme`/`applyTheme` résolvent le mode persisté (`obsigate-theme-mode`) au lieu de traiter la clé (`defaut-obsigate`) comme un mode. Test : `unit.test.mjs` (+1). | Les deux feuilles étaient désactivées car `defaut-obsigate !== "dark"` et `!== "light"` ; résultat **non déterministe** selon l'ordre `UI.initTheme()` (clé) / `Sync.init()` → `themes.initThemes()` (mode). Vérifié Playwright : 5/5 chargements colorés (`.py`), sépia/contraste élevé sur la palette claire |
+| *BUG-079* | `GET /api/diagnostics` → 500 « dictionary changed size during iteration » (stats d'index) | 🟢 corrigé | P1 | ⚙️ backend | IA | `backend/main.py` | Charger la page de diagnostic pendant une indexation : `GET /api/diagnostics` → 500 | `backend/main.py` (`api_diagnostics`) : snapshot avant itération — `list(index.items())` et `inv.word_index.copy()` (copie C atomique sous le GIL) ; test de non-régression `tests/test_api_main.py::TestConfig::test_diagnostics_concurrent_index_writes` | Le handler itérait les dicts en direct alors que l'indexeur les modifiait depuis un autre thread (rebuild initial dans `_search_executor`, hooks incrémentaux `add_document`/`remove_document`) → `RuntimeError` dans le générateur → 500. Test déterministe (`RaceDict` fait grossir le dict en cours d'itération) : échoue sans le correctif, passe avec. Vérifié : pytest 1305 passed / 6 skipped, ruff 0, mypy 0 |

 ### TODOs techniques (améliorations / nouvelles tâches)

@@ -258,6 +266,13 @@ Avant de corriger quoi que ce soit, un agent IA doit :
 | 2026-09-23 | BUG-070 | Correction | `backend/auth/webauthn_mfa.py`, `backend/auth/router.py`, `.env.example`, `tests/test_webauthn.py`, `CHANGELOG.md`, `docs/ISSUES_TODOLIST.md` | **BUG-070** : activation WebAuthn rejetée en 400. (1) Défauts `localhost` sans port → `resolve_relying_party()` dérive rp_id/origines de la requête (config explicite prioritaire, forwarded sous TRUST_PROXY), appliqué aux endpoints register + login. (2) Challenge single-use → 5 derniers conservés, vérification contre le challenge de la cérémonie en cours. **Vérifié au navigateur** (authentificateur virtuel CDP, instance Docker) : register 200, clé listée, clé de test retirée. Tests : `test_webauthn.py` 19/19 (+8), suite complète 1249 passed / 6 skipped, ruff/mypy 0. | 🟢 corrigé (en attente vérif utilisateur) |
 | 2026-09-23 | BUG-071 | Correction | `frontend/index.html`, `frontend/js/config.js`, `frontend/js/i18n.js`, `frontend/style.css`, `frontend/locales/{fr,en}.json`, `tests/frontend/config-mobile.test.mjs` (nouveau), `.gitea/workflows/ci.yml`, `CHANGELOG.md`, `docs/ISSUES_TODOLIST.md` | **BUG-071** : page « Configurations » inutilisable en mobile. (1) `#config-nav` masquée sous 768px sans toggle → hamburger `#config-hamburger` ajouté à l'en-tête (`.help-hamburger`, libellé `config.toc_toggle` FR/EN). (2) Ancres brutes sans JS → interception en `config.js` (scroll doux, lien actif, repli auto mobile, reset à l'ouverture). (3) Débordements 360px → bloc CSS mobile `#config-modal` (sommaire haut 46vh, grilles 1fr, add-rows wrap + largeurs inline neutralisées, items wrap, cibles 44px). `data-i18n-attr` multi-paires (`;`). Vérifié : `config-mobile.test.mjs` 11/11 (nouveau, au CI), pytest 1249 passed / 6 skipped, ruff/mypy 0, validate-imports 39 modules, unit 10/10, JSDOM ai 93/93 + ai-sidebar 6/6 + sidebar-filters 8/8 + mobile-editor 35/35 + config-ai-keys 7/7. | 🟢 corrigé (en attente vérif utilisateur) |
 | 2026-09-23 | BUG-071 (complément E2E) | Test | `tests/e2e/config-mobile.spec.js` (nouveau), `CHANGELOG.md`, `docs/ISSUES_TODOLIST.md` | **BUG-071 (complément E2E)** : spec Playwright mobile (convention `mobile-editor.spec.js` : `test.skip` hors viewport ≤768px, donc inactive sur le projet `chromium-desktop` du CI). Vérifié en local sur l'instance de test (port 2029, auth désactivée) : hamburger → sommaire, sélection → scroll + actif + repli, 0 débordement horizontal à 393px (3/3 `chromium-mobile`, 3 ignorés en desktop) ; suite `mobile-editor.spec.js` intacte (3/3). | 🟢 corrigé (en attente vérif utilisateur) |
+| 2026-09-23 | BUG-072 | Correction | `frontend/js/viewer.js`, `frontend/style.css`, `tests/frontend/image-viewer.test.mjs`, `tests/e2e/image-viewer.spec.js`, `scripts/run-e2e-local.ps1` (nouveau), `package.json`, `AGENTS.md`, `README.md`, `README.fr.md`, `CHANGELOG.md`, `docs/ISSUES_TODOLIST.md` | **BUG-072** : dans la visionneuse d'images (#108-D), le plein écran (lightbox) et le panneau « Métadonnées » étaient perdus dès qu'on changeait d'image avec ←/→ (ou la pellicule), car `openFile` → `renderFile` recrée entièrement `renderImageViewer`. (1) **Persistance** : état module `_imageViewerState { lightbox, meta }` restauré à chaque rendu ; un drapeau `_imageViewerNavPending` posé par `go()` et le clic de vignette indique à `renderFile` que le rendu suivant est une navigation image→image (pas de réinitialisation) — toute autre ouverture repart à zéro. (2) **Panneau latéral** : `.image-meta-panel` déplacé dans un nouveau `.image-viewer-body` en flex row, à droite de `.image-stage` (`border-left`, `width:280px; max-width:40%`, défilement vertical) au lieu d'une bande sous la pellicule ; la règle lightbox ne masque plus que la pellicule. Boutons stables `image-btn-lightbox`/`image-btn-metadata` + `aria-pressed`, `Escape` resynchronise l'état. Tests statiques `image-viewer.test.mjs` (+2) et E2E Playwright (+1). **Diagnostic E2E** : `npm run test:e2e` bloquait car `bash` résout vers WSL (HS, Ubuntu `Stopped`, `HCS_E_CONNECTION_TIMEOUT`) et git-bash est bloqué par App Control → lanceur PowerShell ajouté. Vérifié : `image-viewer.spec.js` 4/4, **suite `chromium-desktop` complète 103 passed / 6 skipped (10,3 min)** via `scripts/run-e2e-local.ps1`, `image-viewer.test.mjs` 12/12, unit 10/10, validate-imports 40 modules. | 🟢 corrigé (en attente vérif utilisateur) |
+| 2026-09-23 | BUG-073 | Correction | `frontend/style.css`, `tests/frontend/mobile-toolbar.test.mjs` (nouveau), `tests/e2e/mobile-toolbar.spec.js` (nouveau), `.gitea/workflows/ci.yml`, `CHANGELOG.md`, `docs/ISSUES_TODOLIST.md` | **BUG-073** : en mobile (≤768px), la barre fixe `#mobile-toolbar` (64px + safe-area) recouvrait le bas de tous les documents/pages — fin de contenu inaccessible. (1) **Cause** : la règle de clearance du bloc `@media (max-width: 768px)` ciblait `.main-layout`, classe absente de `index.html` (vrai conteneur : `.main-body`) → sélecteur mort, zéro dégagement ; règle sœur morte `.editor-modal.active ~ .main-layout { padding-bottom: 0 }` supprimée (overlay plein écran / nécessaire en édition inline). (2) **Correctif** : `.main-body { padding-bottom: calc(64px + env(safe-area-inset-bottom, 0)) }`, reset `body.reading-mode .main-body { padding-bottom: 0 }` (barre masquée en mode lecture), `body.np-active .content-area` ramené de `calc(64px+safe+76px)` à `76px` (dégagement dock seul — géométrie totale identique, pas de double comptage avec `.main-body`). Tests : `mobile-toolbar.test.mjs` (7 statiques, ajouté au CI), E2E `mobile-toolbar.spec.js` (géométrie + scroll fin de `ANALYSE_REVIEW.md`, skip hors viewport ≤768). Vérifié : `mobile-toolbar` 7/7, JSDOM 14 suites 0 échec, **E2E `chromium-mobile` BUG-073 2/2 + régressions mobile-editor/config-mobile 6/6**, **suite `chromium-desktop` complète 106 passed / 9 skipped (11,4 min)**, pytest 1302 passed / 6 skipped, ruff/mypy 0, validate-imports 40 modules, unit 11/11. | 🟢 corrigé (en attente vérif utilisateur) |
+| 2026-09-24 | #114 | Feature | `frontend/index.html`, `frontend/js/config.js`, `frontend/style.css`, `frontend/locales/{fr,en}.json`, `tests/frontend/config-mobile.test.mjs`, `tests/e2e/config-mobile.spec.js`, `docs/features/settings-mobile-114.md` (nouvelle), `docs/ROADMAP.md`, `CHANGELOG.md`, `docs/ISSUES_TODOLIST.md` | **#114 — Configuration, refonte mobile-responsive (≤768px)**. (1) **Drawer sommaire** : `#config-nav` en panneau `position: fixed` (`min(320px, 88vw)`, z-index 40) sous backdrop `#config-modal.config-toc-open::before` (z-index 35) ; bouton `#config-toc-close` ; backdrop/Échap ferment le drawer d'abord puis la modale ; `_setConfigNav` bascule la classe + conserve le `display` inline de reset. (2) **Modale plein écran** : `100dvh` + `padding: 0`, `border-radius: 0`. (3) **Tactile** : boutons/liens ≥44px, inputs/selects `16px` + `min-height: 44px` (anti-zoom iOS, scopé `#config-modal`), rangée `.config-actions-row` sticky column + safe-area, formulaires 1 colonne, MFA 1 colonne + code full-width, wrap webhook/token/share/diag/avatar/webauthn. (4) **Dettes HTML/i18n** : `.config-actions-row` replacée dans `#cfg-backend-settings` (`</section>` orphelin supprimé), id dupliqué `cfg-partages-publics` retiré du `<h2>`, `#plugins-settings-container` supprimé, doublons `.config-btn-add` + règle morte `.mfa-recovery-input` purgés, `#mt-explorer` → `data-i18n="settings.explorer"` ; i18n : clés mortes `settings.{backend,backend_hint,restart_badge,save,plugins}` supprimées, `settings.explorer` + `config.toc_close` ajoutées, `settings.tabs` FR = « Onglets ». Vérifié : `config-mobile.test.mjs` 27/27 (au CI), unit 11/11, validate-imports 40 modules, pytest 1302 passed / 6 skipped, ruff/mypy 0, E2E `chromium-mobile` 5/5. | ✅ livré (en attente vérif utilisateur) |
+| 2026-09-24 | BUG-074 → BUG-077 | Correction | `backend/agent/loop.py`, `backend/bookslm_routes.py`, `frontend/js/bookslm.js`, `frontend/style.css`, `frontend/index.html`, `frontend/locales/{fr,en}.json`, `frontend/sw.js`, `tests/test_agent_loop.py`, `tests/test_bookslm.py`, `tests/frontend/ai.test.mjs`, `tests/frontend/editor-inline.test.mjs`, `CHANGELOG.md`, `docs/ISSUES_TODOLIST.md` | **Lot assistant IA (mode agent)** : (BUG-075) confirmation par lot — `pending.actions` regroupe toutes les mutations d'un tour LLM, un unique bouton « Tout approuver (N) » envoie `confirm_all` (`ToolContext.confirmed`) et n'interrompt plus à chaque action ; les lectures du lot s'exécutent aussitôt. (BUG-074) résumé du bloc d'étapes avec titre de la 1re action + compteur limité aux actions, reprise diffusée dans le même message (fini le « 1 étape » fragmenté). (BUG-076) refresh de l'arborescence débouncé sur les events `tool` mutateurs + `_notifyFileWritten` étendu aux documents (xlsx/docx/csv/pdf). (BUG-077) le bouton d'envoi devient « Stop » pendant le stream (abort SSE, tâche serveur annulée à la déconnexion, marqueur « Exécution arrêtée. »). Guide/i18n FR/EN + `ai.stop`/`ai.stopped`/`ai.confirm_actions`/`ai.action_apply_all` ; `SW_VERSION` v25. Vérifié : pytest 1304 passed / 6 skipped, ruff/mypy 0, validate-imports 40 modules, unit 11/11, ai 100/100, editor-inline 44/44, mobile-editor 35/35, ai-sidebar 6/6, forge 32/32, pane-manager 9/9, sw 8/8. | 🟢 corrigé (en attente vérif utilisateur) |
+
+| 2026-09-24 | #115, #117, BUG-078 | Feature + correction | `frontend/js/themes.js`, `frontend/js/ui.js`, `frontend/js/viewer.js`, `frontend/js/config.js`, `frontend/index.html`, `frontend/style.css`, `frontend/popout.html`, `frontend/locales/{fr,en}.json`, `frontend/icons/avatar/*` (nouveau), `tests/frontend/unit.test.mjs`, `tests/frontend/toolbar-order.test.mjs`, `tests/frontend/settings-order-avatar.test.mjs`, `docs/features/viewer-toolbar-highlight-avatars.md` (nouvelle), `docs/ROADMAP.md`, `CHANGELOG.md` | **#115** barre d'outils de lecture épinglée : `viewer.js`/`popout.html` sortent `.file-actions` de `.file-header` dans un `.file-toolbar` enfant direct de `.content-area` (`position: sticky; top: 0`), masqué en mode lecture. **BUG-078** coloration syntaxique : le basculement des feuilles highlight.js suit le **mode** (`themes.applyTheme` + `ui.initTheme/applyTheme` lisent `obsigate-theme-mode`) au lieu de la clé de thème qui désactivait les deux feuilles. **#117** avatars prédéfinis : galerie de 12 images (`frontend/icons/avatar/`) dans `#cfg-profile`, clic → recadrage 256 px (pipeline import) + `PATCH /api/auth/me`, avatars actifs surlignés (`obsigate-avatar-preset`), import personnalisé et suppression conservés. Vérifié : Playwright (coloration 5/5 déterministe, toolbar épinglée à `barTop` constant au défilement), `unit.test.mjs` 12/12, `toolbar-order` 13/13, `settings-order-avatar` 12/12, JSDOM editor-inline/pane-manager/mobile-editor/image-viewer/pdf-viewer/config-mobile/media-viewer/excalidraw verts, pytest 1304 passed / 6 skipped, ruff/mypy 0, validate-imports 40 modules. | 🟢 corrigé (en attente vérif utilisateur) |
+| 2026-09-24 | BUG-079 | Correction | `backend/main.py`, `tests/test_api_main.py`, `CHANGELOG.md`, `docs/ISSUES_TODOLIST.md` | **BUG-079** : `GET /api/diagnostics` renvoyait 500 « dictionary changed size during iteration ». Le handler itérait `inv.word_index.values()` et `index.items()` en direct alors que l'indexeur les modifiait depuis un autre thread (rebuild initial dans `_search_executor`, hooks incrémentaux `add_document`/`remove_document`) → `RuntimeError` dans le générateur. Correctif : **snapshot avant itération** (`list(index.items())`, `inv.word_index.copy()`) — copie C atomique sous le GIL, pas de verrou ajouté. Test de non-régression déterministe (`RaceDict` fait grossir le dict pendant l'itération ; échoue sans le correctif, passe avec). Vérifié : pytest 1305 passed / 6 skipped, ruff 0, mypy 0 (80 fichiers), validate-imports 40 modules, unit 12/12. | 🟢 corrigé (en attente vérif utilisateur) |

 ---

@@ -1,6 +1,6 @@
 # ObsiGate — Roadmap

-> **Version :** 2.16.6 | **Dernière mise à jour :** 2026-09-22
+> **Version :** 2.28.4 | **Dernière mise à jour :** 2026-09-26
 > **Ce fichier ne contient que le travail à venir** (🔵 En cours + ⚪ Backlog) et un index compact
 > vers les fonctionnalités livrées.
 > - **Méthode de livraison à appliquer pour toute tâche : [DELIVERY_WORKFLOW.md](./DELIVERY_WORKFLOW.md)**
@@ -37,7 +37,7 @@
 - **Reste à faire :**
  - [x] **Signature de l'updater Tauri** (gratuit) : paire de clés générée, `pubkey` renseignée, `createUpdaterArtifacts` activé, secrets CI câblés
  - [x] **Manifeste `latest.json`** généré par `scripts/updater_manifest.py` (intégré à `publish_release.py`), endpoint updater pointé sur `main`
-  - [ ] **Signature de code Windows** : non retenue (pas de certificat) — alternatives : livrer non signé, SignPath.io (OSS gratuit), Certum OSS, Azure Trusted Signing, certificat EV
+  - [ ] **Signature de code Windows** : **non retenue — décision confirmée le 2026-09-26** : livraison non signée + documentation SmartScreen (« Exécuter quand même »). Alternatives écartées sauf retour utilisateur : SignPath.io (OSS gratuit), Certum OSS, Azure Trusted Signing, certificat EV
  - [ ] Exécuter les 6 tests E2E **manuels** — protocole documenté : [DESKTOP_E2E_CHECKLIST.md](./DESKTOP_E2E_CHECKLIST.md)

 ---
@@ -47,6 +47,7 @@
 ### 73. Synchronisation multi-appareils — Obsidian Sync compatible

 - **Effort :** 6-8 jours | **Impact :** 🟢
+- **Décision 2026-09-26 : reporté (P4)** — axe prioritaire = dette & sécurité (#85/#87) ; #73 hors chemin critique. Si réactivé : partir d'un MVP export/hash/LWW adossé à #59 (PWA offline) + #62 (collab Yjs/CRDT) plutôt qu'un protocole parallèle.
 - **Description :** Synchronisation des vaults entre plusieurs instances d'ObsiGate via un protocole de synchronisation décentralisé ou compatible Obsidian Sync. Alternative self-hosted à Obsidian Sync.
 - **Sous-tâches :**
  - [ ] Protocole : évaluation CRDT vs OT vs diff/patch pour fichiers markdown
@@ -60,60 +61,18 @@

 ---

-## ⚪ Backlog — Priorité 2 (P2)
-
-### 83. Barre d'outils d'édition mobile — style Obsidian Android
-
- **Effort :** 3-5 jours | **Impact :** 🟡 | **Zone :** frontend (mobile)
- **Statut :** ✅ livré — ruban horizontal défilable ancré au-dessus du clavier, commandes étendues et personnalisation persistée. Détail : [archive/COMPLETED_v1-v2.md](./archive/COMPLETED_v1-v2.md) (section #83).
- **Description :** remplacer la barre de mise en forme Markdown actuelle par un **ruban horizontal
-  défilable** ancré juste au-dessus du clavier virtuel, reprenant l'ergonomie de l'app Android
-  Obsidian : fond anthracite aux coins arrondis, insertion/enrobage de la syntaxe au curseur ou sur
-  la sélection, et personnalisation des commandes via une icône clé à molette.
- **Sous-tâches :**
-  - [x] Ruban horizontal défilable (glissement tactile gauche/droite) ancré au-dessus du clavier
-  - [x] Actions rapides : annuler, refaire, `[[ ]]` (lien interne), modèle/fichiers, tag `#`, pièce jointe
-  - [x] Formatage : H1–H6, gras, italique, barré (`~~`), surligné (`==`), code en ligne/bloc, citation (`>`)
-  - [x] Liens externes, listes à puces/numérotées, case à cocher (`- [ ]`), indenter / désindenter
-  - [x] Personnalisation (clé à molette) : ajouter / supprimer / réordonner les commandes
-  - [x] i18n FR/EN + tests frontend (helpers purs) + E2E mobile
-
---
-
 ## ⚪ Backlog — Sécurité, architecture & performance (P0/P1)

-### 84. Consolidation & sécurité — revue statique 2026-09-13 (phase 1)
-
- **Effort :** 6-9 jours | **Impact :** 🔴 | **Zone :** backend + frontend | **Référence :** [ISSUES_TODOLIST.md](./ISSUES_TODOLIST.md) BUG-021 → BUG-034
- **Statut :** 🟢 livré (phase 1) — sanitizer XSS, rate-limit/lockout MFA, isolation vaults, ReDoS, SSRF webhooks, cycle de vie des sessions, politique de mot de passe, verrous `users.json`, audits IP, rate-limit par compte, symlinks, recherche via inverted index, token en cookie HttpOnly. Détail : [archive/COMPLETED_v1-v2.md](./archive/COMPLETED_v1-v2.md) (section #84).
- **Description :** traiter toutes les vulnérabilités critiques et importantes issues de la revue statique : XSS markdown (`escape=False`) et page publique de partage, brute-force MFA, isolation des vaults (`resolve_safe_path`), ReDoS, SSRF webhooks, cycle de vie des sessions, politique de mot de passe, races `users.json`, audits IP, rate-limit partagé, indexation symlinks.
- **Sous-tâches :**
-  - [x] Assainir le rendu markdown (sanitizer serveur en whitelist) et la page de partage (échappement `title`/frontmatter) — *DOMPurify client non ajouté (défense en profondeur serveur suffisante)*
-  - [x] Rate-limit + lockout sur les endpoints MFA (`totp/verify`, `recovery`, `webauthn/verify`)
-  - [x] Corriger `resolve_safe_path` (comparaison de chemin stricte par segment) + test de régression
-  - [x] Rotation du refresh token, révocation de l'access token au logout, persistance des JTI révoqués
-  - [x] Valider la politique de mot de passe à la création ; bloquer le SSRF des webhooks et externaliser les secrets
-  - [x] Verrous sur les mutations `users.json` ; consigner l'adresse IP réelle dans les audits
-  - [x] Ignorer les symlinks de l'index ; caps CPU/timeout regex (ReDoS)
-  - [~] Durcir la CSP — *partiel* : directives `object-src`/`base-uri`/`form-action`/`frame-ancestors` ajoutées et token retiré de `sessionStorage` ; migration **nonce** restante (nécessite la conversion des gestionnaires d'événements inline)
-
-### 85. Refonte architecturale — découpage du monolithe & persistance d'état (phase 2)
-
- **Effort :** 8-12 jours | **Impact :** 🟡 | **Zone :** backend
- **Description :** extraire le monolithe `backend/main.py` (~4 260 lignes) en routers FastAPI par domaine et rendre persistant l'état qui ne l'est pas (index de recherche, JTI révoqués, compteurs de rate-limit) pour préparer le multi-nœuds.
- **Sous-tâches :**
-  - [ ] Routers par domaine : files, search, share, webhooks, plugins, collab, admin, ai
-  - [ ] Centraliser le contrat d'outils IA sur `tools/registry.py` (permissions, quotas, redaction)
-  - [ ] Persister index, JTI révoqués et compteurs de rate-limit (SQLite/Redis)
-  - [ ] Verrous asyncio autour de l'index global et des stores JSON ; service de partage public (expiration, révocation, quotas)
-
 ### 87. Amélioration continue — tests, CI/CD, revues de sécurité (phase 4)

 - **Effort :** 3-5 jours | **Impact :** 🟡 | **Zone :** `.gitea/workflows/`, `tests/`
- **Description :** renforcer le pipeline (`.gitea/workflows/ci.yml`, `desktop-build.yml`) pour le rendre bloquant par défaut et accompagner les phases 1 → 3.
+- **Décision 2026-09-26 : prioritaire (axe Dette & sécurité).**
+- **Statut :** 🔵 en cours depuis 2026-09-26 — par tranches. **T1 livrée (v2.28.1) :** bandit bloquant (`nosec` justifiés B324/B404/B603/B607/B406, B105 exclu comme `pyproject`), `npm audit` bloquant (0 vulnérabilité), 5 suites frontend intégrées au CI (`upload`, `pretty`, `media-viewer`, `mfa-settings`, `config-ai-keys`). pip-audit reste consultatif (montées starlette/weasyprint à qualifier).
+- **Description :** renforcer le pipeline (`.gitea/workflows/ci.yml`, `desktop-build.yml`) pour le rendre bloquant par défaut et accompagner les phases 1 → 3. Constat 2026-09-26 : job `security` non bloquant (`bandit`/`pip-audit` en `|| echo`, ni semgrep ni trivy), E2E limité à `chromium-desktop`, 5 suites frontend hors CI.
 - **Sous-tâches :**
-  - [ ] Jobs CI sécurité (bandit/semgrep/trivy, audits pip/npm) + tests E2E XSS (page de partage + lecteur markdown)
-  - [ ] Tests de concurrence (`users.json`), fuzzing de timing regex, couverture des composants critiques
+  - [ ] Jobs CI sécurité **bloquants** (bandit/semgrep/trivy, audits pip/npm) + tests E2E XSS (page de partage + lecteur markdown) — **T4 livrée :** `tests/e2e/xss.spec.js` (BUG-021/022, 2/2 vert en local) + `scripts/e2e-server.ps1` (cycle de vie serveur E2E avec progression `start|stop|status|logs`)
+  - [ ] Tests de concurrence (`users.json`), fuzzing de timing regex, couverture des composants critiques ; intégrer au CI les 5 suites frontend hors CI (`upload`, `pretty`, `media-viewer`, `mfa-settings`, `config-ai-keys`) — **T2 livrée (v2.28.2) :** `tests/test_hardening_concurrency.py` (users.json concurrent + budget temps regex) ; 5 suites au CI (T1)
+  - [ ] Finir BUG-034 (migration CSP **nonce**, conversion des handlers inline), `Secure` cookies à `true` par défaut, politique CORS same-origin explicite ; confirmer la rotation de la clé DeepSeek (BUG-006, clé dans l'historique Git) — **T3 livrée (v2.28.3) :** helper `is_secure_cookies()` centralisé (défaut `false` conservé : compatibilité HTTP local), avertissement au démarrage sur bind non-loopback sans `Secure`, absence CORS attestée par test (`tests/test_security_headers.py`) ; bascule du défaut reportée (casserait les logins localhost)
  - [ ] Revue périodique des dépendances ; documentation utilisateur FR/EN synchronisée ; contrôle automatisé de la conformité au DoD

 ---
@@ -126,6 +85,7 @@

 | # | Domaine / fonctionnalité | Version | Détails |
 |---|---|---|---|
+| 152 | Viewer XLSX — affichage multi-feuilles, édition des cellules, téléchargement | 2.27.0 | [archive](./archive/COMPLETED_v1-v2.md) |
 | BUG-047 | Versionnage — source unique `VERSION` + bump SemVer automatique au commit (hooks + tag) | 2.3.0 | [DEVELOPMENT_AND_RELEASES.md](./DEVELOPMENT_AND_RELEASES.md) |
 | 90 | Barre d'actions du document — regroupement fonctionnel + spacers | 2.3.0 | [archive](./archive/COMPLETED_v1-v2.md) |
 | 89 | Drag & drop complet de fichiers/dossiers & intégration Assistant IA | 2.3.0 | [features/drag-and-drop-ai.md](./features/drag-and-drop-ai.md) |
@@ -182,6 +142,17 @@
 | 106 | Assistant IA — Actions instantanées contextuelles, catalogue « Toutes les actions » & frontmatter complet | 2.14.0 | [features/ai-quick-actions.md](./features/ai-quick-actions.md) |
 | 107 | Configuration — Gestion des clés API & MCP : création/révocation de jetons longue durée (1 j, 1 mois, 6 mois, 1 an, sans fin), une seule clé pour l'API REST et le serveur MCP, « dernière utilisation », store `data/api_tokens.json` sans secret persisté | 2.15.0 | [features/api-mcp-tokens-107.md](./features/api-mcp-tokens-107.md) |
 | 86 | Optimisation globale des performances (phase 3) — scan différentiel, excalidraw différé, garde-fou `replace` (inverted index / PDF lazy / caps regex déjà livrés via BUG-033/040/025) | 2.16.0 | [features/perf-phase3-86.md](./features/perf-phase3-86.md) |
+| 108 | Support complet des images — arborescence, visionneuse (zoom/pan/navigation/miniatures), indexation nom+métadonnées, `media_types.py`, filtre `ext:`, SVG sandbox | 2.17.0 | [features/image-support.md](./features/image-support.md) |
+| 109 | Support audio & vidéo — lecteurs HTML5 intégrés, streaming HTTP Range (`/api/media`), fallback codec/taille | 2.18.0 | [features/media-viewers-109.md](./features/media-viewers-109.md) |
+| 110 | Lecteur média persistant « Now Playing » — élément partagé téléporté (inline ⇄ dock), Media Session, mini-vidéo PiP, mobile, reprise | 2.19.0 | [features/media-viewers-109.md](./features/media-viewers-109.md) |
+| 111 | Visionneuse d'images — navigation fluide : image ajustée au cadre, navigation en place (cache annuaire + préchargement), pellicule persistante, flèches latérales au survol | 2.20.0 | [features/image-navigation-111.md](./features/image-navigation-111.md) |
+| 112 | En-tête allégé & compte en sidebar — version dans le menu Options, retrait utilisateur/déconnexion du header, section compte en bas de la sidebar, pellicule d'images défilable (molette + flèches) | 2.21.0 | [features/header-user-sidebar-112.md](./features/header-user-sidebar-112.md) |
+| 113 | Configuration — ordre naturel des sections (Profil 1er, À propos dernier, TOC = page) & avatar utilisateur (import PNG/JPG/WEBP, persistance serveur, cercle sidebar) | 2.22.0 | [features/settings-order-avatar-113.md](./features/settings-order-avatar-113.md) |
+| 114 | Configuration — refonte mobile-responsive (modale plein écran 100dvh, sommaire en drawer coulissant, cibles tactiles ≥ 44 px, inputs 16 px anti-zoom, sauvegarde sticky, MFA 1 colonne, purge i18n/HTML) | 2.23.0 | [features/settings-mobile-114.md](./features/settings-mobile-114.md) |
+| BUG-078 | Fichiers de code — coloration syntaxique restaurée (feuilles highlight.js basculées sur le mode de thème et non la clé) | 2.25.0 | [features/viewer-toolbar-highlight-avatars.md](./features/viewer-toolbar-highlight-avatars.md) |
+| 115 | Viewer — barre d'outils de lecture épinglée au défilement | 2.25.0 | [features/viewer-toolbar-highlight-avatars.md](./features/viewer-toolbar-highlight-avatars.md) |
+| 117 | Configuration — avatars prédéfinis dans le profil utilisateur (12 images) | 2.25.0 | [features/viewer-toolbar-highlight-avatars.md](./features/viewer-toolbar-highlight-avatars.md) |
+| 85 | Refonte architecturale — découpage du monolithe (14 routers, `main.py` 4 827 → ~750 lignes), stores JSON verrouillés, rate-limit SQLite optionnel | 2.27.2→2.27.13 | [features/archi-refonte-85.md](./features/archi-refonte-85.md) |

 ---

@@ -189,16 +160,18 @@

 | Priorité | Items | Effort total estimé |
 |---|---|---|
-| ✅ Complété | #1 → #59, #61–72, #74–76, #78–84, #86, #88–93, #94–100, #102–107, #92 | ~120 jours réalisés |
-| 🔵 P2 restant | #77 Desktop : signature de code (non retenue), 6 tests E2E **manuels** ([protocole](./DESKTOP_E2E_CHECKLIST.md)) | ~0,5-1 jour |
-| ⚪ P4 restant | #73 Sync (6-8j) | 6-8 jours |
-| ⚪ P0/P1 restant | #85, #87 Refonte architecturale, CI/CD (BUG-035 → BUG-040 corrigés, #86 livré) | ~11-17 jours |
-| **Total restant** | **6 items + finitions** | **~23-36 jours** |
+| ✅ Complété | #1 → #59, #61–72, #74–76, #78–86, #88–93, #94–100, #102–115, #117, #92 | ~141 jours réalisés |
+| 🔵 Finitions | #77 Desktop : 6 tests E2E **manuels** ([protocole](./DESKTOP_E2E_CHECKLIST.md)) — signature Windows non retenue (décision 2026-09-26) | ~0,5-1 jour |
+| ⚪ P4 reporté | #73 Sync — **reporté (décision 2026-09-26)**, hors chemin critique | 6-8 jours si réactivé |
+| ⚪ P0/P1 prioritaire | #87 CI/CD (BUG-035 → BUG-040 corrigés, #86 livré) | ~3-5 jours |
+| **Total chemin critique** | **#77 fin + #87** | **~4-6 jours** |

 ---

 ## Notes

+- **Décisions 2026-09-26 :** axe prioritaire = dette & sécurité (#85/#87) ; #73 Sync reporté (P4, hors chemin critique) ; desktop livré non signé + doc SmartScreen.
+- **Clôture #85 (v2.27.13) :** monolithe découpé (T1→T9), stores verrouillés + rate-limit SQLite (T10), fiche `docs/features/archi-refonte-85.md`.
 - Les items P3/P4 ne sont pas ordonnés par priorité interne — à raffiner selon les retours utilisateurs.
 - L'effort inclut le développement + tests unitaires + intégration CI, mais pas la documentation utilisateur.
 - Les items marqués 🟢 (nice-to-have) sont de bons candidats pour des contributions externes.
@@ -404,6 +404,21 @@ Deux compléments au bouton « Ajouter » de l'assistant IA.

 ---

+## #152 — Viewer XLSX : affichage, édition, téléchargement ✅ TERMINÉ
+
+Les fichiers `.xlsx` s'ouvrent dans un dédié : un tableau HTML par feuille (onglets en cas de
+multi-feuilles, en-têtes A1, cellules `contenteditable`), bouton **Enregistrer** actif dès la
+première modification et téléchargement du fichier d'origine.
+
+| Aspect | Détail |
+|---|---|
+| Lecture | `backend/xlsx_reader.py` — openpyxl `read_only`, formules affichées comme texte, plafond 500×40 cellules par feuille |
+| Écriture | `PUT /api/file/{vault}/xlsx/save` → `services/mutations.edit_xlsx_cells` (backup avant écriture, refs A1 validées, `str`→`int`/`float`, 500 cellules max par requête) |
+| Frontend | `renderXlsxViewer` dans `frontend/js/viewer.js` (onglets, cellules sales, Entrée/Échap, collage monoligne) |
+| Limite connue | Le round-trip openpyxl conserve valeurs/formules/styles mais perd graphiques, images et tableaux croisés |
+
+---
+
 ## Grosses fonctionnalités — fiches dédiées

 | # | Feature | Version | Fiche |
@@ -20,6 +20,7 @@
  - [x] **B3.** Fallback : retry sans `tools` si le provider rejette les tools (400/404/422) → chat simple ; protocole texte `obsigate-action` conservé côté frontend **pour le chat classique uniquement** (BUG-053 : en mode agent, le prompt impose les outils natifs et interdit les blocs `obsigate-action`)
  - [x] **B4.** SSE réellement streaming — `ai_chat.stream_completion` (`_openai_stream` + `_gemini_stream`) alimente `/api/ai/bookslm/chat` token par token ; le middleware GZip laisse passer les endpoints SSE BooksLM.
  - [x] **B5.** Confirmations UI : toggle « mode agent » (front → `/agent`), événements `tool`/`confirmation`, carte Apply + aperçu diff (LCS) pour les mutations, reprise `confirm`/`confirm_messages` côté backend. *S'active dès que la phase D enregistre des outils `write`.*
+    - **Complément (BUG-074 → BUG-077)** : la pause de confirmation **regroupe toutes les mutations** d'un même tour LLM (`pending.actions`, chacune avec son libellé `step` et son diff) et la carte n'offre plus qu'un seul bouton « **Tout approuver (N)** » ; la reprise envoie `confirm_all` et le backend arme `ToolContext.confirmed` pour le reste du run (plus d'approbation action par action). Le bloc d'étapes affiche un **titre** (1re action) et ne compte que les **actions** (hors réflexions) ; la reprise diffuse dans le **même message** (« N étapes » cumulées). L'arborescence et le document affiché sont **rafraîchis** dès une action mutatrice (refresh débouncé + `obsigate:file-written`, documents xlsx/docx/csv/pdf inclus). Le bouton d'envoi devient « **Stop** » pendant le stream (abort SSE, tâche serveur annulée à la déconnexion, marqueur « Exécution arrêtée. »).
  - [x] **B6.** Outils de navigation in-app : `open_file`, `reveal_in_tree` (événement `obsigate:open-file`) — livré via les liens cliquables de l'assistant (#80, [ai-assistant-ux.md](./ai-assistant-ux.md))
  - [x] **B7.** Tests : agent loop LLM mocké (`tests/test_agent_loop.py`), providers (`tests/test_ai_chat.py`), endpoint (`tests/test_bookslm.py`)

@@ -0,0 +1,77 @@
+# #85 — Refonte architecturale : découpage du monolithe & persistance d'état (phase 2)
+
+> **Statut :** livré (T1→T10) — `backend/main.py` 4 827 → ~750 lignes, 14 routers,
+> persistance partielle (stores verrouillés + rate-limit SQLite optionnel).
+> Méthode : tranches à impact minimal, comportement inchangé, un domaine par
+> commit, suite complète verte à chaque commit (1320 passed / 6 skipped).
+
+## 1. Découpage du monolithe (T1→T9, comportement inchangé)
+
+Chaque tranche déplace un domaine vers `backend/routers/` (handlers verbatim,
+mêmes chemins/modèles/auth/tags OpenAPI), les modèles vers `backend/schemas.py`,
+et ne committe que sur suite verte + `test_version` vert.
+
+| Tranche | Domaine | Nouveau module | Version |
+|---|---|---|---|
+| T1 | health (`/api/health*`) | `routers/health.py` (+ `HealthResponse` → schemas) | 2.27.2 |
+| T2 | webhooks CRUD | `routers/webhooks.py` | 2.27.3 |
+| T3 | sharing (`/api/share*`, `/s/*`) | `routers/sharing.py` | 2.27.4 |
+| T4 | backups (9 routes) | `routers/backups.py` (+ `Diff/Restore*` → schemas, `backend/sse.py`) | 2.27.5 |
+| T5 | search (11 routes) | `routers/search.py` (+ modèles → schemas, `backend/search_executor.py`) | 2.27.6 |
+| T6a | lecture fichiers | `routers/files_read.py` (+ modèles, `routers/helpers.py`) | 2.27.7 |
+| T6b | mutations fichiers/dossiers | `routers/files_write.py` (+ 15 modèles → schemas) | 2.27.8 |
+| T6c | media/pdf/export/guide | `routers/files_media.py` (Range helper → `helpers.py`) | 2.27.9 |
+| T7 | config (12 routes) | `routers/config.py` (`_FALLBACK_MODELS` déplacé) | 2.27.10 |
+| T8 | vaults + history + conflicts (13 routes) | `routers/vaults.py`, `history.py`, `conflicts.py` (+ `backend/watcher_state.py`) | 2.27.11 |
+| T9 | realtime + render | `routers/realtime.py` (SSE + collab WS), `backend/render.py` | 2.27.12 |
+
+`main.py` ne contient plus que l'assemblage : lifespan, middlewares, montage
+des routers, racine `/api`, statique/SPA, 4 cales de compatibilité testées
+(`_resolve_safe_path`, `_backup_file`, `_check_vault_writable`, `_get_backup_dir`).
+
+Correctifs au passage : décorateur orphelin `/s/{token}` (double-enregistrement
+de `/api/conflicts`), tag OpenAPI `media` inexistant (assignation par chemin
+conservée), tests statiques frontend réalignés (`image-viewer`, `media-viewer`),
+tests repointés vers les modules canoniques (`test_ai_models`, `test_api_main`).
+
+## 2. Persistance d'état (T10)
+
+| État | Avant | Après |
+|---|---|---|
+| JTI révoqués (`revoked_tokens.json`) | persisté, **sans verrou** | `RLock` (load/save/revoke/check) |
+| `shares.json` | persisté, **sans verrou** | `RLock` (4 mutateurs) |
+| `webhooks.json` + secrets | persistés, **sans verrou** | `RLock` (create/update/delete/secrets) |
+| `api_keys.json` (tool-secrets) | persisté, **sans verrou** | `RLock` (set/delete) |
+| Rate-limit auth | mémoire, mono-process | **inchangé par défaut** + option `OBSIGATE_RATELIMIT_DB` (SQLite WAL : mêmes fenêtres/budgets, partagé multi-workers, survit au redémarrage) |
+| Index de recherche | mémoire, rebuild au démarrage | **conservé** (voir §3) |
+| `users.json`, `api_tokens.json`, `vault_settings.json` | déjà verrouillés (BUG-029, #107) | inchangé |
+
+Tests : `tests/test_store_locks.py` (4 — concurrence threads, pertes prouvées
+sans verrou : 25/200 partages), `tests/test_ratelimit_store.py` (7 —
+sémantique SQLite identique, persistance, concurrence 200/200).
+
+Déjà existants et vérifiés (pas de code) : verrous `threading` + `asyncio`
+de l'indexeur (`_index_lock`, `_async_index_lock`), contrat central des
+outils IA — `backend/tools/registry.py` couvre déjà permissions
+(`requires_vault`, `require_destructive_allowed`), quotas
+(`check_and_record` par outil) et redaction (`redact_payload`) pour les
+35 outils enregistrés via `@tool(`.
+
+## 3. Décisions assumées (non fait, et pourquoi)
+
+- **Index non persisté sur disque.** Le rebuild différentiel (#86 : réutilise
+  les entrées inchangées `size` + `mtime`) rend le démarrage rapide ; un
+  snapshot introduirait des risques de staleness/drift de format sans gain
+  mesuré. Réévaluer si le démarrage devient lent (vaults 50k+ fichiers).
+- **Redis exclu.** SQLite WAL couvre le multi-workers mono-hôte sans nouvelle
+  infra ; Redis reste l'option multi-nœuds documentée (cf. `ratelimit.py`).
+- **`.gitignore` (`_*.py` ignore les `__init__.py`).** Contourné par
+  `git add -f` comme les packages existants ; assainir la règle à part.
+- Noms en `_` conservés (`backend/render.py`, stores) : déplacement verbatim,
+  zéro churn d'appels.
+
+## 4. Reste connu (hors #85)
+
+- CSP `unsafe-inline` (migration nonce, BUG-034 partiel) et `Secure` cookies → #87.
+- `main.py` (~750 lignes) : lifespan, middlewares, statique/SPA — cible
+  d'extraction ultérieure si besoin, non bloquant.
@@ -0,0 +1,69 @@
+# #112 — En-tête allégé & compte en sidebar
+
+> **Version livrée :** 2.21.0 · **Statut :** 🟢 · **Impact :** 🟡
+> **Zone :** frontend (`index.html`, `frontend/js/auth.js`, `frontend/js/viewer.js`,
+> `frontend/style.css`, i18n FR/EN) + CI (`.gitea/workflows/ci.yml`).
+
+## Contexte
+
+Le header concentrait plusieurs éléments redondants ou peu lisibles :
+
+- la **version** était affichée en permanence à côté du bouton Options ;
+- un **bouton de déconnexion** et le **nom de l'utilisateur** occupaient la zone
+  droite du header, sans regroupement logique ;
+- la pellicule de miniatures de la visionneuse d'images ne pouvait être
+  parcourue qu'au glisser (pas de molette horizontale ni de flèches dédiées).
+
+## Ce qui a été livré
+
+### A. Header allégé
+
+- **Version déplacée** du header vers le menu **Options** : nouvelle ligne
+  non-interactive « Version » (`#version-badge` conservé pour `populateVersions`).
+- **Suppression** du bloc `#user-menu` (nom + bouton « sign out ») et de la
+  ligne « Déconnexion » du menu Options. Le header droit ne garde que l'indicateur
+  hors-ligne, le contexte vault et le bouton Options.
+
+### B. Section compte en bas de la sidebar
+
+- Nouveau bloc `#sidebar-user` épinglé au bas de la sidebar (`flex-shrink: 0`,
+  bordure supérieure), à la manière d'un site web professionnel :
+  - initiales dans un **avatar** circulaire (dégradé d'accent) ;
+  - **nom** (`#sidebar-user-name`, classe `.user-display-name` conservée pour la
+    réutilisation par la collaboration) et **rôle** localisé
+    (Administrateur / Utilisateur) ;
+  - **bouton déconnexion** (`#sidebar-user-logout`) ;
+  - clic sur l'identité → **Profil** (ouvre la section `#cfg-profile`).
+- `AuthManager.renderUserSection()` peuple le bloc ; il reste masqué quand
+  l'authentification est désactivée (`#sidebar-user[hidden]`). `renderUserMenu()`
+  est conservé comme alias rétro-compatible.
+- La règle mobile qui masquait `.user-display-name` est limitée au header
+  (`.header-right .user-display-name`) pour que le nom reste visible dans la
+  sidebar mobile.
+
+### C. Pellicule d'images défilable (#112, complément de #111)
+
+- Nouveau conteneur `.image-nav` autour de la pellicule, avec deux **flèches
+  translucides** fixes (`.image-strip-arrow-prev/next`) révélées au survol.
+- **Molette** au-dessus de la pellicule → défilement horizontal
+  (`strip.scrollLeft += deltaY`), conversion des deltas verticaux.
+- Les flèches font défiler d'une « page » (`strip.scrollBy`, défilement doux).
+
+## Tests
+
+- `tests/frontend/unit.test.mjs` (+1) : header nettoyé (plus de `#user-menu`,
+  `#logout-btn`, ni version dans `.header-right`), version dans le menu Options,
+  présence de `#sidebar-user`, styles `.sidebar-user`/`.menu-list-version`, clés
+  i18n FR/EN.
+- `tests/frontend/image-viewer.test.mjs` (+1) : wrapper `.image-nav`, flèches de
+  pellicule, molette et `scrollBy`.
+- `tests/e2e/header-sidebar.spec.js` (nouveau) : test header/version exécuté
+  partout ; test compte en sidebar conditionné à l'auth (skip sinon).
+- CI : `image-viewer.test.mjs` ajouté au job `lint` (il n'y était pas depuis #108).
+
+## Limitations connues
+
+- La section compte n'apparaît que si l'authentification est activée.
+- `doLogoutFallback` (script inline supprimé avec la ligne du menu) reste appelé
+  par la section Profil uniquement en repli ; `window.handleLogout` est toujours
+  défini par `auth.js`, donc le repli n'est jamais atteint.
@@ -0,0 +1,80 @@
+# #111 — Visionneuse d'images : navigation fluide
+
+> **Version livrée :** 2.20.0 · **Statut :** 🟢 · **Impact :** 🟡
+> **Zone :** frontend (`frontend/js/viewer.js`, `frontend/style.css`, i18n FR/EN).
+> **Améliore :** [#108](./image-support.md) (visionneuse livrée en 2.17.0).
+
+## Contexte
+
+La visionneuse d'images de #108 fonctionnait mais restait perfectible sur l'usage
+quotidien :
+
+- certaines images s'affichaient **plus grandes que le cadre** de présentation ;
+- changer d'image (←/→, flèches, vignette) appelait `openFile` → `renderFile` →
+  `renderImageViewer`, soit **un rechargement complet** de la vue **et** un
+  nouvel appel `/api/browse` à *chaque* image — sensible dès qu'un dossier en
+  contient beaucoup ;
+- la **pellicule de miniatures disparaissait** le temps du re-rendu ;
+- aucune zone de clic latérale ne permettait de changer d'image.
+
+## Ce qui a été livré
+
+### A. Ajustement au cadre
+
+- La zone de contenu devient un conteneur **flex** dédié à la visionneuse
+  (`.content-area:has(> .image-viewer-container) { padding: 0; overflow: hidden }`) :
+  plus de défilement de page, la visionneuse occupe tout l'espace disponible.
+- `.image-stage` gagne `min-height: 0`, un `padding` de 16 px (cadre) et
+  `box-sizing: border-box` ; `.image-main` conserve `max-width/height: 100%`
+  avec `width/height: auto`. L'image est donc **toujours redimensionnée dans
+  l'espace disponible**, y compris quand le panneau « Métadonnées » s'ouvre
+  (la scène se réduit, l'image suit).
+
+### B. Navigation « en place » (performance)
+
+- `renderImageViewer` ne se contente plus de rendre une image : il gère un état
+  mutable (`currentPath`, `currentTitle`, `imgUrl`, `currentMeta`) et expose
+  `showSibling(index)` qui **remplace le `src` du `<img>`** sans reconstruire le
+  DOM. Les flèches, le clavier ←/→ et les miniatures passent tous par là.
+- Conséquences : plus de `openFile`, plus de re-rendu, **plus de refetch du
+  fichier ni de `/api/browse`** à chaque image.
+- **Cache annuaire** `_imageDirCache` (`Map`, TTL 15 s) : la liste des images
+  d'un dossier n'est récupérée qu'une fois par courte fenêtre.
+- **Préchargement** des images voisines (`new Image()`), avec un `Set` pour
+  éviter les doublons.
+
+### C. Pellicule persistante
+
+- La pellicule de miniatures n'est plus recréée à chaque navigation ; la
+  vignette active est simplement re-marquée (`.active`) et **amenée dans la vue
+  par défilement horizontal du film uniquement** (jamais la page).
+- Miniatures en `loading="lazy"` + `decoding="async"`.
+
+### D. Flèches latérales translucides
+
+- Deux boutons superposés `.image-nav-arrow` (prev/next) longent les bords du
+  cadre, avec une icône `chevron` et une ombre portée pour rester lisibles sur
+  toute image.
+- Opacité quasi nulle au repos, révélée au **survol du cadre** (`0.4`) puis du
+  bouton (`1`, avec dégradé sombre). Toujours visibles (opacité moyenne) sur les
+  appareils tactiles (`@media (hover: none)`).
+- Le `pointerdown`/`dblclick` des flèches n'est pas propagé à la scène : le
+  pan (glisser) et le double-clic de réinitialisation du zoom restent intacts.
+- Un **compteur** `n / total` est ajouté à la barre d'outils.
+
+## Tests
+
+- `tests/frontend/image-viewer.test.mjs` : helpers purs inchangés + vérifications
+  statiques de la navigation en place (`showSibling`, absence de
+  `_imageViewerNavPending`, cache annuaire), des flèches et du CSS
+  (`:has(> .image-viewer-container)`, `max-width/height`, `opacity`).
+- `tests/e2e/image-viewer.spec.js` (+1) : image contenue dans le cadre, flèche
+  superposée révélée au survol, titre mis à jour **sans recréer le conteneur**
+  (marqueur `data-inplace`), pellicule toujours visible et compteur affiché.
+
+## Limitations connues
+
+- Le cache annuaire a un TTL court : une image ajoutée puis ouverte dans les
+  quelques secondes peut ne pas apparaître tout de suite dans la pellicule.
+- Les flèches latérales n'apparaissent pas en mode lightbox plein écran
+  (navigation clavier ←/→ et pellicule masquée conservées).
@@ -0,0 +1,96 @@
+# #108 — Support complet des images (arborescence, visionneuse, indexation)
+
+> **Version livrée :** 2.17.0 · **Statut :** ✅ · **Impact :** 🟡
+> **Zone :** backend (`indexer`, `main`, `media_types`, `media_thumbs`) + frontend
+> (`viewer.js`, `utils.js`, `style.css`).
+
+## Contexte
+
+Seul l'affichage *inline* dans un document markdown (`![[image.png]]`) fonctionnait.
+L'image isolée était **invisible dans l'arborescence** (filtrée par
+`SUPPORTED_EXTENSIONS`) et son **affichage standalone était cassé** : le `<img>`
+généré par `api_file_view()` pointait vers `/api/file/{vault}/raw`, un endpoint qui
+renvoie du **JSON** (`FileRawResponse`) et non des octets d'image.
+
+## Ce qui a été livré
+
+### A. Arborescence & indexation
+
+- **`backend/media_types.py`** (nouveau) : source unique des extensions
+  `IMAGE_EXTENSIONS`, `AUDIO_EXTENSIONS`, `VIDEO_EXTENSIONS` (+ helpers
+  `is_image`/`is_audio`/`is_video`/`is_media`/`media_mime_type`). Socle réutilisé
+  par #109. `attachment_indexer.py` et `api_file_view()` ne dupliquent plus la
+  liste.
+- Les extensions image sont intégrées à `SUPPORTED_EXTENSIONS`
+  (`indexer.py`) **avec une branche binaire** : `_scan_vault` et
+  `_index_single_file_sync` indexent **nom / taille / mtime** et ne lisent
+  **jamais** les octets (`content: ""`, `content_preview: ""`). Le TF-IDF reste
+  donc propre et aucune `UnicodeDecodeError` ne pollue les logs.
+- Le reindex **watchdog** suit automatiquement (même filtre d'extensions).
+- Le filtre `ext:png` / `ext:jpg` de la recherche avancée est opérationnel dès
+  lors que les images entrent dans l'index.
+- `/api/dashboard` expose `image_count` (par vault) et `total_images` (global),
+  séparés du `file_count` général.
+
+### B. Affichage standalone (correctif)
+
+- `api_file_view()` génère désormais
+  `src="/api/image/{vault}?path=…"` (chemin URL-encodé) au lieu de `/raw`.
+- `viewer.js` utilise le même endpoint (plus de bouton « Plein écran » cassé).
+- **Sécurité SVG** : `/api/image` (et le repli de `/api/media/.../thumb`) ajoute
+  `Content-Security-Policy: sandbox` pour les `.svg`, ce qui empêche
+  l'exécution du JavaScript embarqué quand le fichier est ouvert directement
+  dans un onglet (XSS same-origin). Dans une balise `<img>`, l'en-tête est sans
+  effet. Le middleware de sécurité ne remplace plus une politique stricte posée
+  par une route.
+
+### C. Miniatures
+
+- `GET /api/media/{vault}/thumb?path=…&size=…` : miniature **WebP** générée
+  avec `pillow>=10.0`, mise en cache sous
+  `<OBSIGATE_DATA_DIR>/.obsigate-cache/thumbs/{sha1}.webp`. La clé de cache
+  embarque **mtime + taille**, donc toute édition invalide naturellement la
+  vignette.
+- Génération dans un thread (`run_in_executor`) avec **timeout 2 s** ; repli sur
+  l'original en cas d'échec. SVG : l'original est servi tel quel (Pillow ne
+  décode pas le SVG) ; GIF/WebP animés : première frame.
+
+### D. Visionneuse
+
+`renderImageViewer()` (`frontend/js/viewer.js`) remplace l'ancien rendu minimal :
+
+- image centrée `object-fit: contain` ; **zoom molette 0,1×–8×**, **pan au
+  glisser** (Pointer Events), **double-clic = réinitialisation**, raccourcis
+  `+` / `-` / `0` ;
+- boutons +/−/reset et **badge de zoom** ;
+- **navigation ←/→** entre les images du même dossier (via `/api/browse`) et
+  **pellicule de miniatures** (`/api/media/.../thumb`, `loading="lazy"`) ;
+- barre d'outils : « Ouvrir l'original » (nouvel onglet `/api/image`),
+  téléchargement, **panneau métadonnées** repliable (dimensions via
+  `naturalWidth/Height`, taille, type MIME, chemin, date), **lightbox** plein
+  écran (fond `rgba(0,0,0,.9)`, `Échap` pour quitter) ;
+- `EXT_ICONS` : extensions image → icône Lucide `image` ;
+- compatible Split View (#75) : rendu dans `getContentArea()` du panneau actif.
+
+### E. Tests
+
+- `tests/test_image_api.py` : octets + MIME sur `/api/image`, en-tête `sandbox`
+  des SVG, URL `/api/image` dans le HTML de `api_file_view`, encodage des
+  chemins accentués, miniatures WebP + repli SVG + refus non-image.
+- `tests/test_image_indexing.py` : image présente dans `list_directory` et
+  `path_index`, indexée avec `content == ""`, pertinence watchdog, compteurs
+  dashboard, filtre `ext:png`.
+- `tests/frontend/image-viewer.test.mjs` : helpers purs (`clampImageZoom`,
+  `isImagePath`, `buildImageUrl`) + vérifications statiques (zoom/pan/nav,
+  absence de `/raw` dans la visionneuse, CSS, icônes).
+- `tests/e2e/image-viewer.spec.js` : ouverture d'une image depuis
+  l'arborescence, réponse `/api/image` en `image/png`, zoom molette, navigation
+  par la pellicule (fixtures `test_vault/sample-image.png` +
+  `sample-vector.svg`).
+
+## Limitations connues
+
+- **HEIC/HEIF** (iPhone) : non décodables par les navigateurs → hors scope ;
+  `pillow-heif` envisagé en v2.
+- Le SVG passe par l'original (pas de rendu bitmap côté serveur) : les
+  miniatures de dossiers SVG ne sont pas générées.
@@ -0,0 +1,187 @@
+# #109 — Support audio & vidéo (lecteurs HTML5 intégrés)
+
+> **Version livrée :** 2.18.0 · **Statut :** ✅ · **Impact :** 🟡
+> **Zone :** backend (`main`, `indexer`, `media_types`, `bookslm`) + frontend
+> (`viewer.js`, `utils.js`, `style.css`, `sw.js`).
+
+## Contexte
+
+Le socle média de #108 (`backend/media_types.py`) exposait déjà
+`AUDIO_EXTENSIONS` / `VIDEO_EXTENSIONS`, mais ces fichiers n'étaient ni indexés
+ni affichables : ils tombaient dans le chemin binaire « Ce fichier est binaire
+et ne peut pas être affiché » + bouton download.
+
+## Ce qui a été livré
+
+### A. Backend
+
+- **Indexation** : `AUDIO_EXTENSIONS` et `VIDEO_EXTENSIONS` sont intégrées à
+  `SUPPORTED_EXTENSIONS` (`indexer.py`). La branche `is_media(ext)` existante
+  indexe **nom / taille / mtime** sans jamais lire les octets (`content: ""`),
+  donc le TF-IDF et les logs restent propres. Le watcher et le filtre `ext:`
+  suivent automatiquement.
+- **Streaming** : le helper Range de `pdf/stream` a été extrait en
+  `_stream_file_with_range(file_path, request, media_type)` (206 +
+  `Content-Range` + `Accept-Ranges`, `416` sur plage invalide, `FileResponse`
+  simple sinon, lectures offloadées via `asyncio.to_thread`). `pdf/stream`
+  l'utilise désormais aussi (comportement inchangé, tests de régression).
+- **Nouvel endpoint `GET /api/media/{vault}?path=…`** : sert audio/vidéo avec le
+  MIME `media_types.media_mime_type` (surcharges `.m4a→audio/mp4`,
+  `.opus/.oga→audio/ogg`, `.mov→video/quicktime`, `.m4v→video/mp4`).
+- **Gardes-fous** : `_resolve_safe_path`, `check_vault_access`, et
+  `OBSIGATE_MEDIA_MAX_INLINE_MB` (défaut **500 Mo**) — au-delà, l'endpoint
+  renvoie `413` et la vue fichier bascule sur l'UI de téléchargement.
+- **`api_file_view()`** renvoie, avant tout `read_text()`, `is_audio` /
+  `is_video` / `stream_url` / `media_mime` / `size_bytes`. Au-delà de la limite :
+  `unsupported: true` + `media_too_large: true`.
+
+### B/C. Frontend — lecteurs
+
+- `viewer.js` dispatche `data.is_audio` → `renderAudioViewer()` et
+  `data.is_video` → `renderVideoViewer()`.
+  - **Audio** : `<audio controls preload="metadata">` pleine largeur, artwork
+    placeholder (icône Lucide `audio-lines`), durée lue via `loadedmetadata`,
+    toolbar (titre, voûte + taille, badge durée, ouvrir l'original, télécharger).
+  - **Vidéo** : `<video controls playsinline preload="metadata">` centrée sur une
+    scène noire letterboxée (`max-height: calc(100vh - 180px)`), même toolbar
+    avec durée + résolution.
+- `renderMediaFallback()` : sur l'événement `error` de l'élément média (codec
+  hors web-natif : `.mkv`, `.avi`, HEVC…) ou si le fichier est trop volumineux,
+  remplace le lecteur par l'UI binaire + message
+  `viewer.media_unsupported` / `viewer.media_too_large` + **Télécharger** /
+  **Ouvrir dans un nouvel onglet**.
+- **Pause** au changement de vue : `_mediaViewerCleanup` met en pause et détache
+  la source quand `renderFile()` re-rend la zone (changement d'onglet, navigation)
+  — pas de lecture persistante en v1 (cohérence #75).
+- `EXT_ICONS` (`utils.js`) : audio → `audio-lines`, vidéo → `video`.
+- i18n FR/EN (`viewer.media_unsupported`, `viewer.media_too_large`).
+
+### D. Recherche & intégrations
+
+- Filtres `ext:mp3`, `ext:mp4`, etc. opérationnels (les médias entrent dans
+  l'index).
+- Récents / dashboards : previews vides (aucun texte extrait) — comportement
+  naturel de la branche binaire.
+- **BooksLM** : `_file_entry()` ignore désormais tout média (`is_media`) — les
+  octets ne sont jamais envoyés au modèle ; les images restent gérées à part via
+  `load_vault_image_data_url` (vision).
+- **Hors scope v1** (porte notée) : transcription audio via Whisper.
+
+### E. Mobile & PWA
+
+- Le service worker ne met **jamais** en cache le flux média
+  (`/api/media/{vault}`), tout en conservant le cache des miniatures
+  (`/api/media/{vault}/thumb`) et la stratégie Network First pour le reste. Les
+  requêtes `Range` étaient déjà exclues.
+
+### F. Tests
+
+- `tests/test_media_stream.py` : 206 + `Content-Range` + 1024 octets, `416` hors
+  borne, `200` + `Accept-Ranges` sans Range, suffix range, `413` au-delà de la
+  limite, `403` path traversal, `403` vault sans accès, `400` non-média, MIME
+  `.mov`, régression `pdf/stream`.
+- `tests/test_media_indexing.py` : `.mp3`/`.mp4`/`.flac` dans l'arborescence et
+  l'index, `content == ""`, watcher pertinent, filtre `ext:mp3`.
+- `tests/frontend/media-viewer.test.mjs` : helpers purs (`formatMediaDuration`,
+  `buildMediaUrl`) + vérifications statiques (dispatch, `<audio>`/`<video>`,
+  fallback, CSS, icônes, i18n, service worker, endpoints backend).
+- `tests/e2e/media-viewer.spec.js` : lecture `<audio>` et `<video>` via
+  `/api/media` + réponse `206` sur requête `Range`. Fixtures :
+  `test_vault/sample-audio.mp3` (sine 1 s) et `test_vault/sample-video.webm`
+  (VP8 64×64).
+
+## Limitations connues
+
+- Formats hors web-natifs (`.mkv`, `.avi`, HEVC, AC-4) : non lisibles sans
+  transcodage (ffmpeg hors scope) → repli téléchargement / lecteur de l'OS.
+- HLS, sous-titres `<track src=".vtt">` et vignettes vidéo : hors scope v1.
+- Gros médias (> 500 Mo par défaut) : pas de lecture intégrée (protège le worker
+  uvicorn unique) ; ajustable via `OBSIGATE_MEDIA_MAX_INLINE_MB`.
+
+---
+
+## #110 — Lecteur média persistant « Now Playing »
+
+> **Version livrée :** 2.19.0 · **Statut :** ✅ · **Impact :** 🟡
+> **Zone :** frontend (`now-playing.js`, `viewer.js`, `ui.js`, `pane-manager.js`,
+> `app.js`, `style.css`, `index.html`, locales).
+
+### Principe : un seul média, téléporté
+
+`frontend/js/now-playing.js` est un contrôleur singleton qui possède **l'unique
+élément `<audio>`/`<video>`** de l'application. Il est déplacé par `appendChild`
+(sans recréation, donc sans couper la lecture) entre :
+
+- la **vue inline** — l'onglet/panneau du média, via la surface
+  `NowPlaying.attachInline(area, data)` (appelée par `renderAudioViewer` /
+  `renderVideoViewer` de `viewer.js`) ; et
+- le **dock global** — un enfant direct de `<body>` (`#now-playing-host`), monté
+  hors de `.content-wrapper` pour survivre à `renderFile()`, aux onglets, aux
+  panneaux et à la reconstruction de la grille split.
+
+`renderFile()` appelle `NowPlaying.handleRender(area, data)` : si la zone qui va
+être réécrite contient l'élément média, celui-ci est renvoyé au dock. Les autres
+points qui vident le contenu (dashboard `_showDashboard`, `showWelcome`,
+`PaneManager._buildGrid` / `_collapseToSingle`) appellent le même hook via le
+global `window.NowPlaying`.
+
+### Surfaces et ergonomie
+
+- **Dock audio (desktop)** : pilule flottante verre dépoli centrée en bas
+  (`.np-dock--audio`) — artwork, titre, voûte, durée, play/pause,
+  précédent/suivant, barre de progression (seek), volume, **revenir au média**,
+  agrandir, fermer.
+- **Panneau étendu** : carte centrale (bottom-sheet sur mobile) avec artwork,
+  scrub large, volume, vitesse 0,5–2×, précédent/suivant et actions
+  ouvrir/télécharger/fermer.
+- **Mini-vidéo flottante** (`.np-dock--video`) : déplaçable **librement** depuis
+  n'importe quel point de la fenêtre (position absolue mémorisée, centre autorisé
+  — aucune aimantation aux bords) et redimensionnable, géométrie persistée ; sur
+  mobile elle se fixe au-dessus de la barre d'outils.
+- **Mobile** : mini-player au-dessus de la barre 64 px
+  (`bottom: calc(64px + env(safe-area-inset-bottom))`), `viewport-fit=cover`
+  ajouté, et `body.np-active` ajoute le décalage du contenu. La barre audio passe
+  en grille (progression sur sa propre ligne) et masque les actions secondaires
+  pour éviter tout chevauchement.
+
+### Comportements
+
+- Naviguer (onglet, panneau, dashboard, split) **ne coupe pas** la lecture ; le
+  dock apparaît.
+- **Revenir au média** : `NowPlaying.focus()` rouvre/focalise l'onglet
+  `vault::path` (`window.getActiveTabManager().open`).
+- **Fermer** : `NowPlaying.stop()` met en pause, libère l'élément et masque le
+  dock.
+- **Fermer l'onglet** du média en cours : la lecture continue et un toast
+  `player.continues` le signale.
+- **Media Session** : métadonnées (`MediaMetadata`) + actions
+  play/pause/stop/seek/nexttrack/previoustrack → écran verrouillé, casque
+  Bluetooth, touches média, **Windows SMTC** (WebView2).
+- **Picture-in-Picture** natif pour la vidéo (`requestPictureInPicture`), bouton
+  masqué si non supporté.
+- **Reprise après rechargement** : état (fichier, position, pause, préférences
+  volume/vitesse) persisté en `localStorage` (`obsigate-now-playing`,
+  `obsigate-player-prefs`, `obsigate-player-pos`).
+
+### Fichiers modifiés / ajoutés
+
+- Nouveau : `frontend/js/now-playing.js` (contrôleur, dock, session, PiP,
+  persistance), `tests/e2e/media-viewer.spec.js` (dock/retour/fermeture/mini-vidéo).
+- Modifiés : `viewer.js` (délégation inline + `handleRender`), `ui.js`
+  (dashboard + toast de fermeture d'onglet), `pane-manager.js` (grille/collapse),
+  `app.js` (`initNowPlaying`), `style.css` (dock/étendu/vidéo/mobile, et
+  correction des variables `--surface1`/`--text-dim` non définies),
+  `index.html` (`viewport-fit=cover`), locales FR/EN (`player.*`).
+
+### Correctifs annexes
+
+- Les variables CSS `--surface1` et `--text-dim`, utilisées mais **jamais
+  définies** depuis #108/#109, sont remplacées par `--surface` et
+  `--text-secondary` (+ `--text-dim` dans toute la feuille).
+
+### Hors scope (porte notée)
+
+- Fenêtre vidéo détachée **native** Tauri (`WebviewWindowBuilder` +
+  `always_on_top`) : non implémentée, à faire dans une itération dédiée (Rust,
+  capabilities, route `/player`).
+
@@ -0,0 +1,172 @@
+# #114 — Configuration — refonte mobile-responsive de la section Settings
+
+> **Statut :** 🟢 · **Impact :** 🟡 · **Zone :** frontend (mobile, ≤ 768 px)
+> **Fichiers :** `frontend/index.html`, `frontend/js/config.js`, `frontend/style.css`,
+> `frontend/locales/{fr,en}.json`, `tests/frontend/config-mobile.test.mjs`,
+> `tests/e2e/config-mobile.spec.js`.
+
+## Contexte
+
+La page **Configurations** (`#config-modal`) était utilisable en mobile seulement
+partiellement (correctifs BUG-071) : le sommaire s'ouvrait en bloc haut, la modale
+n'était pas plein écran, les cibles tactiles étaient sous 44 px, le clavier virtuel
+iOS zoomait les champs, la rangée « Sauvegarder » disparaissait au scroll et plusieurs
+dettes HTML/i18n étaient restées en place.
+
+## Ce qui a été livré
+
+### A. Sommaire en drawer coulissant
+
+- `#config-nav` devient un **panneau coulissant gauche** (`position: fixed`,
+  `width: min(320px, 88vw)`, `z-index: 40`) sous un fond assombri
+  (`#config-modal.config-toc-open::before`, `z-index: 35`).
+- Ouverture/fermeture pilotée par la classe **`.config-toc-open`** sur `#config-modal`
+  (JS `_setConfigNav`) + un `display` inline conservé pour le contrat de reset.
+- Bouton **`#config-toc-close`** (classe `.help-toc-close`, `aria-label`
+  `config.toc_close`) dans l'en-tête du drawer ; visible uniquement dans le drawer
+  de la config (masqué sur desktop où la nav est toujours visible).
+- **Backdrop** : un tap hors du drawer ferme d'abord le drawer, pas la modale
+  (`e.target === modal` → `config-toc-open` présent → `_setConfigNav(false)`).
+- **Échap** : ferme le drawer d'abord, puis la modale.
+- Fermeture de la modale (`closeConfigModal`) nettoie toujours la classe
+  `config-toc-open` et le `display` inline (aucun fond ne subsiste).
+- Animation `config-toc-slide-in` (translateX) à l'ouverture.
+
+### B. Modale plein écran
+
+- `#config-modal` : `padding: 0`, `.editor-container` en `100vw × 100dvh`
+  (`100dvh` = hauteur du viewport dynamique, tient compte de la barre du navigateur
+  mobile), `border-radius: 0`, `border: none`.
+- Le contenu (`#config-scroll`) garde son scroll propre ; le sous-bloc
+  `.config-content` reçoit un `padding-bottom: 80 px` pour ne jamais passer sous la
+  rangée sticky.
+
+### C. Cibles tactiles ≥ 44 px & anti-zoom iOS
+
+- **Champs** : `.config-input`, `.config-select`, `.help-nav-search`,
+  `.profile-field .config-input/.config-select` → `min-height: 44px` +
+  `font-size: 16px` (**anti-zoom iOS** : un `font-size < 16px` déclenche le zoom
+  automatique au focus). La règle est **scoppée `#config-modal`** pour ne pas écraser
+  `.mfa-code-input` (qui a sa propre typographie).
+- **Boutons** : `.config-btn-save`, `.config-btn-secondary`, `.config-btn-primary`,
+  `.config-btn-danger`, `.config-btn-add`, `.config-btn-sm`, `.mfa-link-btn`,
+  `.theme-action-btn`, `.profile-avatar-actions .config-btn-secondary`,
+  `.editor-btn` (fermer), `#config-hamburger`, `#config-toc-close`,
+  `.help-search-clear` → `min-height/min-width: 44px`.
+- **Liens du sommaire** : `.help-nav-link` → `min-height: 44px` (ligne tactile
+  confortable).
+- `.help-hamburger` passe de 36 px à **44 px** en mobile (règle partagée avec le
+  modal d'aide).
+
+### D. Rangée « Sauvegarder » sticky
+
+- `.config-actions-row` (dans `#cfg-backend-settings`) → `position: sticky;
+  bottom: 0`, empilée verticalement (`flex-direction: column`), boutons pleine
+  largeur 44 px, fond opaque + bordure, `padding-bottom` avec
+  `env(safe-area-inset-bottom)` (barre home iOS).
+- La rangée reste visible pendant le scroll de la section backend ; le
+  `padding-bottom: 80px` de `.config-content` garantit qu'elle ne masque jamais les
+  derniers contrôles.
+
+### E. Formulaires 1 colonne & grilles
+
+- `.config-row` → 1 colonne (`grid-template-columns: 1fr`), `.config-input--num`
+  pleine largeur, `text-align: left`.
+- `.ai-default-grid` / `.ai-provider-fields` → 1 colonne.
+- Add-rows (`.config-add-row`, `.config-add-pattern`) → wrap + largeurs inline
+  (`180/140/100px`) neutralisées (`width: auto !important`).
+- Items webhook/token/share → wrap ; URLs/méta sur leur propre ligne
+  (`overflow-wrap: anywhere`) ; boutons de suppression 44 px.
+- `.hidden-files-add-row` → wrap, input pleine largeur.
+- `.config-diag-row` → wrap.
+- `.profile-avatar-row` → wrap ; `.profile-form` → `max-width: 100%`.
+- `.webauthn-key-item` → wrap ; `.webauthn-key-label` → pleine largeur.
+- `.theme-grid` reste en `auto-fill minmax(160px, 1fr)` (déjà responsive).
+
+### F. MFA & sécurité
+
+- `.mfa-recovery-list` → **1 colonne** en mobile (2 colonnes illisibles à 360 px).
+- `.mfa-verify-section`, `.mfa-recovery-actions`, `.mfa-disable-actions` → wrap ;
+  champs/boutons enfants en pleine largeur.
+- `.mfa-code-input` → `width: 100%`, `max-width: 320px`, `letter-spacing: 6px`
+  (au lieu de 12 px qui débordait), `min-height: 52px`.
+- `.mfa-secret-code` → `word-break: break-all` (secret TOTP long).
+- `.mfa-code-input-group` → wrap.
+- Règle morte **`.mfa-recovery-input`** supprimée (auth.js utilise
+  `mfa-code-input recovery-input`).
+
+### G. Dettes HTML corrigées
+
+- `.config-actions-row` (Sauvegarder / Réindexer / Réinitialiser) déplacée
+  **dans** `#cfg-backend-settings` (elle était hors de toute section → le sticky
+  n'avait pas de conteneur de scroll fiable) ; `</section>` orphelin supprimé.
+- Id dupliqué **`cfg-partages-publics`** retiré du `<h2>` (l'id reste sur la
+  `<section>`, cf. #113).
+- Conteneur mort **`#plugins-settings-container`** supprimé (le rendu réel est
+  `#cfg-plugins` via `plugins.js`).
+- Sections plugins/about ré-indentées.
+- **`#mt-explorer`** : libellé brut `settings.search` remplacé par
+  `<span data-i18n="settings.explorer">` (i18n correct, FR « Explorateur » / EN
+  « Files »).
+- Doublons CSS **`.config-btn-add`** (3 définitions) réduits à la définition de
+  référence.
+
+### H. i18n FR/EN
+
+- **Purge des clés mortes** (aucune référence HTML/JS/tests/backend) :
+  `settings.backend`, `settings.backend_hint`, `settings.restart_badge`,
+  `settings.save`, `settings.plugins`.
+- **Ajouts** : `settings.explorer` (FR « Explorateur » / EN « Files »),
+  `config.toc_close` (FR « Fermer le sommaire » / EN « Close contents »).
+- **Correctif** : `settings.tabs` en FR était le mot anglais « Tabs » →
+  **« Onglets »** (EN reste « Tabs »).
+- Clés vivantes conservées : `settings.reindex`, `settings.no_restart_badge`,
+  `settings.backend_section`, `settings.security`, `settings.search`,
+  `settings.tabs`, `settings.search_placeholder`.
+
+## Tests
+
+### Statics — `tests/frontend/config-mobile.test.mjs` (27, au CI)
+
+- BUG-071a–e (hamburger, toggle JS, grilles/wrap, ancres mortes,
+  `data-i18n-attr` multi-paires) — conservés et adaptés au drawer.
+- **#114a** : `#config-toc-close` présent + i18n ; `_setConfigNav` bascule
+  `.config-toc-open` ; backdrop `::before` (z-index 35) ; `.help-toc-close`
+  masqué sur desktop / visible dans le drawer ; Échap et backdrop ferment le
+  drawer d'abord ; `closeConfigModal` nettoie la classe.
+- **#114b** : modale `100dvh` + `padding: 0` ; inputs/selects `16px` +
+  `44px` ; boutons `44px` ; rangée sticky (`position: sticky` +
+  `flex-direction: column` + safe-area) ; MFA 1 colonne + wrap + code
+  full-width ; `.config-actions-row` bien dans `#cfg-backend-settings`.
+- **#114i18n** : clés mortes purgées ; `settings.explorer` FR/EN ;
+  `settings.tabs` FR = « Onglets » ; `#mt-explorer` porte
+  `data-i18n="settings.explorer"` ; `#plugins-settings-container` absent.
+
+### E2E — `tests/e2e/config-mobile.spec.js` (5, projet `chromium-mobile`)
+
+1. Hamburger → drawer `position: fixed` + classe `config-toc-open` sur la modale.
+2. Bouton `#config-toc-close` et tap backdrop ferment le drawer **sans** fermer la
+   modale.
+3. Sélection d'une section → scroll doux + lien actif + repli du drawer.
+4. Modale plein écran (largeur/hauteur ≈ viewport) + `#config-hamburger`,
+   `#config-close` et `#cfg-save-backend` ≥ 44 px.
+5. Aucun débordement horizontal à 393 px (sections IA / tokens / webhooks /
+   partages).
+
+## Détails d'implémentation notables
+
+- **Spécificité CSS** : les règles `#config-modal #config-nav` (2 ids) priment sur
+  les règles génériques `.help-nav` / `body .help-nav` qui masquent la nav en
+  mobile — pas besoin de `!important`.
+- **Backdrop = pseudo-élément** : les clics sur `::before` sont attribués à
+  l'élément or (`#config-modal`), donc le handler `e.target === modal` existant
+  fonctionne sans node supplémentaire.
+- **Contrat de reset conservé** : `configNavOnOpen.style.display = ''` à
+  l'ouverture (test statique BUG-071b) — le CSS reprend la main (drawer masqué par
+  défaut sur mobile).
+- **`100dvh` avec repli `100vh`** : les navigateurs sans support `dvh` gardent le
+  comportement précédent.
+- La règle `.help-hamburger { display: inline-flex }` du bloc mobile du modal
+  d'aide est **partagée** (44 px) ; le drawer de la config double avec
+  `#config-modal .help-hamburger` pour rester robuste à un réordonnancement des
+  règles.
@@ -0,0 +1,94 @@
+# #113 — Ordre naturel des sections Configurations & avatar utilisateur
+
+> **Version livrée :** 2.22.0 · **Statut :** 🟢 · **Impact :** 🟡
+> **Zone :** frontend (`index.html`, `frontend/js/config.js`, `frontend/js/auth.js`,
+> `frontend/style.css`, i18n FR/EN) + backend (`backend/auth/router.py`,
+> `backend/auth/user_store.py`) + CI (`.gitea/workflows/ci.yml`).
+
+## Contexte
+
+Deux irritants sur la page **Configurations** :
+
+- l'ordre des sections était historique et peu naturel (Recherche en tête, Profil
+  noyé en position 11, À propos au milieu) ;
+- la section **Profil** ne permettait pas de personnaliser l'image affichée dans le
+  cercle du compte en bas de la sidebar (initiales uniquement).
+
+## Ce qui a été livré
+
+### A. Ordre naturel des sections (TOC = page)
+
+Nouvel ordre, appliqué **à la liste `<ul class="help-nav-list">` (TOC) et aux
+`<section>` de la page**, dans le même ordre :
+
+1. **Profil** (`#cfg-profile`) — en premier
+2. Sécurité du compte (`#cfg-security`)
+3. Thèmes (`#cfg-themes`)
+4. Paramètres de recherche (`#cfg-search`)
+5. Historique récent (`#cfg-recent`)
+6. Filtrage de tags (`#cfg-tags`)
+7. Fichiers cachés (`#cfg-hidden-files`)
+8. Synchronisation (`#cfg-sync`)
+9. Paramètres backend (`#cfg-backend-settings`)
+10. Diagnostics (`#cfg-diags`)
+11. Clés API IA (`#cfg-ai`)
+12. Sources connectées (`#cfg-sources`)
+13. Clés API & MCP (`#cfg-tokens`)
+14. Notifications push (`#cfg-push`)
+15. Webhooks (`#cfg-webhooks`)
+16. Partages publics (`#cfg-partages-publics`)
+17. Plugins (`#cfg-plugins`)
+18. **À propos** (`#cfg-about`) — en dernier
+
+Regroupement retenu : **Compte & apparence → Navigation & contenu → Système →
+Intégrations & notifications → À propos**.
+
+Les ancres `cfg-tags` et `cfg-partages-publics` étaient posées sur un `<h2>` à
+l'intérieur d'une `<section>` sans id : elles sont désormais portées par la
+`<section>` elle-même, pour que le scroll vise le haut de la section (comme toutes
+les autres).
+
+### B. Avatar utilisateur ( Profil )
+
+- **Import d'image** : bouton « Choisir une image » + overlay caméra au survol de
+  l'aperçu circulaire (88 px) → `<input type="file" accept="image/png,image/jpeg,image/webp">`.
+- **Traitement client** (`config.js`) : garde type (PNG/JPEG/WEBP) et taille brute
+  (8 Mo), **recadrage carré central** et redimensionnement à **256 px** via canvas,
+  export JPEG qualitée 0,85 (fond blanc pour les PNG transparents).
+- **Persistance serveur** : `PATCH /api/auth/me` avec `{"avatar": "<data-url>"}` ;
+  `""` supprime. Validation stricte dans `backend/auth/router.py`
+  (`_validate_avatar`) : data-URL PNG/JPEG/WebP uniquement (**SVG refusé** — surface
+  XSS), plafond 400 000 caractères, base64 valide et **octets magiques** contrôlés.
+  Champ `avatar` ajouté à `data/users.json` (`create_user`), renvoyé par
+  `GET/PATCH /api/auth/me` et par le payload `user` de login.
+- **Affichage sidebar** (`auth.js`) : `renderUserSection()` insère un
+  `<img class="sidebar-user-avatar-img">` dans `#sidebar-user-avatar` quand
+  `user.avatar` est défini, sinon les initiales (repli inchangé). Helpers
+  `AuthManager.updateCachedUser()` et `AuthManager.isAuthEnabled()`.
+- **Suppression** : bouton « Supprimer la photo » (stylisté danger), revenu aux
+  initiales.
+- **Auth désactivée** : le bloc avatar est masqué (pas de compte, sidebar masquée).
+- Feedback : toasts `config.avatar_updated` / `config.avatar_removed`, erreurs en
+  ligne (`config.avatar_invalid_type`, `config.avatar_too_large`,
+  `config.avatar_upload_failed`).
+
+## Tests
+
+- `tests/test_auth_api.py` — classe `TestAvatar` (+8) : GET/PATCH exposent
+  l'avatar, data-URL PNG acceptée, `""` efface, SVG refusé, payload non-image refusé,
+  trop grand refusé, base64 invalide refusé, avatar présent dans le payload de login.
+- `tests/frontend/settings-order-avatar.test.mjs` (nouveau, ajouté au job `lint`) —
+  9 tests : ordre TOC (Profil 1er, À propos dernier), ordre de page strictement
+  identique à la TOC, aucune ancre morte / section orpheline, présence de l'UI avatar
+  dans `#cfg-profile`, flux `config.js` (types, taille, resize, PATCH, rafraîchissement
+  sidebar), rendu `auth.js`, règles CSS, clés i18n FR/EN, validation backend.
+- Vérifications locales : pytest 1302 passed, ruff/mypy 0 erreur, tests frontend
+  statiques + JSDOM verts.
+
+## Limitations connues
+
+- L'avatar est stocké en data-URL dans `data/users.json` (adéquat pour un usage
+  personnel ; un stockage fichier dédié restera possible si les comptes se multiplient).
+- La conversion GIF/animé n'est pas prise en charge (types PNG/JPEG/WEBP uniquement).
+- Le nom d'affichage du profil reste local (`localStorage`) et n'est pas poussé au
+  serveur (comportement antérieur conservé).
@@ -0,0 +1,122 @@
+# #115 / BUG-078 / #117 — Barre d'outils épinglée, coloration syntaxique des fichiers de code & avatars prédéfinis
+
+> **Statut :** 🟢 livré (en attente vérification utilisateur)
+> **Impact :** 🟡 (#115, BUG-078) · 🟢 (#117)
+> **Zone :** frontend (`frontend/js/viewer.js`, `frontend/js/themes.js`,
+> `frontend/js/ui.js`, `frontend/js/config.js`, `frontend/index.html`,
+> `frontend/style.css`, `frontend/popout.html`, `frontend/locales/fr.json`,
+> `frontend/locales/en.json`, `frontend/icons/avatar/*`)
+
+Trois demandes traitées dans la même livraison, toutes côté frontend.
+
+## #115 — Barre d'outils de lecture toujours visible
+
+### Problème
+
+La barre d'actions d'un document (pop-out, bookmark, Editer, Source, Copier, PDF, Export,
+Partager…) était rendue **dans** `.file-header`, un conteneur court placé en haut de la
+zone de lecture. Or un élément `position: sticky` reste borné par son parent : dès que
+`.file-header` sortait de l'écran au défilement d'un document long, la barre disparaissait.
+
+### Correctif
+
+- `frontend/js/viewer.js` et `frontend/popout.html` sortent la barre d'actions de
+  `.file-header` et la placent dans un nouveau conteneur `.file-toolbar`, **enfant direct
+  de `.content-area`** (le conteneur de défilement). La barre peut donc se coller au haut
+  de la zone de lecture pour toute la hauteur du document.
+- `frontend/style.css` :
+
+  ```css
+  .file-toolbar {
+    position: sticky;
+    top: 0;
+    z-index: 30;
+    margin: 0 0 16px;
+    padding: 8px 0;
+    background: var(--bg-primary);
+    border-bottom: 1px solid var(--border);
+  }
+  ```
+
+  Le fond est opaque pour qu'aucun texte ne transparaisse dessous.
+- `body.reading-mode .file-toolbar { display: none }` : la barre reste masquée en mode
+  lecture, comme les autres actions.
+
+## BUG-078 — Coloration syntaxique des fichiers de code
+
+### Problème
+
+Les fichiers `.py`, `.sh`, `.ps1`, `.yml`, `.json`… (et les blocs de code Markdown)
+s'affichaient en **texte brut**, sans couleurs. Le code était pourtant correctement
+généré côté backend (`<pre><code class="language-python">…`) et `safeHighlight()` appelait
+bien `hljs.highlightElement()`.
+
+La cause était ailleurs : les deux feuilles de style de highlight.js (`#hljs-theme-dark`
+et `#hljs-theme-light`, chargées depuis le CDN dans `index.html`) étaient basculées à
+partir de la **clé de thème** persistée (`obsigate-theme` = `defaut-obsigate`, …) :
+
+```js
+darkSheet.disabled = theme !== "dark";    // "defaut-obsigate" !== "dark" → true
+lightSheet.disabled = theme !== "light";  // "defaut-obsigate" !== "light" → true
+```
+
+Les deux feuilles finissaient donc désactivées, privant tous les tokens de leurs couleurs.
+Le résultat dépendait de l'ordre de deux initialisations concurrentes — `UI.initTheme()`
+(clé de thème) au démarrage et `themes.initThemes()` (mode) via `Sync.init()` — d'où un
+comportement **non déterministe** (parfois coloré, le plus souvent non).
+
+### Correctif
+
+- `frontend/js/themes.js` — `applyTheme(themeKey, mode)` bascule désormais les feuilles
+  highlight.js selon le **mode** :
+
+  ```js
+  var isDark = mode === 'dark';
+  darkSheet.disabled = !isDark;
+  lightSheet.disabled = isDark;
+  ```
+
+  (`sepia` et `high-contrast` réutilisent la palette claire.)
+- `frontend/js/ui.js` — `initTheme()` lit le **mode** persisté (`obsigate-theme-mode`) et
+  `applyTheme()` résout un mode avant de fixer `data-theme` et de basculer les feuilles,
+  au lieu de comparer la clé de thème à `"dark"`/`"light"`.
+
+Le basculement est ainsi **déterministe** dès le premier rendu et à chaque changement de
+mode.
+
+## #117 — Avatars prédéfinis dans le profil
+
+### Ce qui a été livré
+
+- **Galerie de 12 avatars** dans la section `Profil` (`#cfg-profile`), servis depuis
+  `frontend/icons/avatar/` (`/static/icons/avatar/<fichier>.jpg`) : Chat, chien, elephan,
+  hibou, koala, lapin, lion, ours, penda, pingouin, raton, tigre.
+- Un clic charge l'image, la fait passer par le **même pipeline que l'import** (recadrage
+  carré central, redimensionnement 256 px, export JPEG 0,85) et l'enregistre via
+  `PATCH /api/auth/me` — aucune modification backend n'a été nécessaire, la validation
+  data-URL PNG/JPEG/WebP existante (BUG-113) s'applique telle quelle.
+- L'avatar actif est **surligné** ; le choix est mémorisé dans `localStorage`
+  (`obsigate-avatar-preset`) et purgé dès qu'on importe une photo personnalisée ou qu'on
+  supprime l'avatar.
+- L'import d'une photo et la suppression restent disponibles.
+- i18n : nouvelle clé `config.avatar_presets_label` (FR/EN).
+
+## Tests
+
+- `tests/frontend/unit.test.mjs` — `syntax highlight theme` (BUG-078) : `themes.applyTheme`
+  bascule les feuilles selon le mode et `ui.js` ne compare plus la clé au mode.
+- `tests/frontend/toolbar-order.test.mjs` — #115 : `.file-toolbar` dans `viewer.js` et
+  `popout.html`, règle CSS `position: sticky; top: 0`, masquage en mode lecture.
+- `tests/frontend/settings-order-avatar.test.mjs` — #117 : 12 avatars présents dans
+  `#cfg-profile`, fichiers d'images existants, pipeline `config.js`, règles CSS, clé i18n
+  FR/EN.
+- Vérification Playwright (instance locale, auth désactivée) : coloration déterministe sur
+  5 chargements successifs d'un `.py` ; `.file-toolbar` dont le `top` ne bouge plus après
+  défilement (épinglage effectif).
+
+## Limitations
+
+- L'avatar reste stocké en data-URL 256 px dans `data/users.json` (comportement #113
+  conservé).
+- Le mode `high-contrast`/`sepia` utilise le thème highlight.js **clair** (pas de palette
+  dédiée).
@@ -2,7 +2,7 @@
 <html lang="fr" data-theme="dark">
    <head>
        <meta charset="UTF-8" />
-        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+        <meta name="viewport" content="width=device-width, initial-scale=1.0, viewport-fit=cover" />
        <title data-i18n="header.logo">ObsiGate</title>

        <!-- PWA Meta Tags -->
@@ -519,9 +519,6 @@
                        ></i>
                        <span id="vault-context-text">All</span>
                    </div>
-                    <!-- User menu (visible when logged in) -->
-                    <div class="user-menu" id="user-menu"></div>
-                    <div class="version-badge" id="version-badge" title="Version ObsiGate"></div>
                    <div class="header-menu">
                        <button
                            class="header-menu-btn"
@@ -770,33 +767,33 @@
                                        >
                                    </span>
                                </button>
-                                <script>function doLogoutFallback(){var x=new XMLHttpRequest();x.open('POST','/api/auth/logout');x.withCredentials=true;x.onload=function(){var a=document.getElementById('app');var l=document.getElementById('login-screen');if(a)a.classList.add('hidden');if(l)l.classList.remove('hidden');try{localStorage.removeItem('obsigate-token')}catch(e){}};x.send()}</script>
-                                <button
-                                    class="menu-list-row menu-list-button"
-                                    id="logout-btn"
-                                    type="button"
-                                    role="menuitem"
-                                    onclick="if(window.handleLogout)window.handleLogout();else{doLogoutFallback()}"
+                                <div
+                                    class="menu-list-row menu-list-version"
+                                    role="none"
                                >
                                    <span
                                        class="menu-list-icon"
                                        aria-hidden="true"
                                    >
                                        <i
-                                            data-lucide="log-out"
-                                            style="width: 17px; height: 17px; color: var(--danger)"
+                                            data-lucide="tag"
+                                            style="width: 17px; height: 17px"
                                        ></i>
                                    </span>
                                    <span class="menu-list-content">
-                                        <span class="menu-list-title" data-i18n="header.menu_logout"
-                                            style="color:var(--danger)"
-                                            >Deconnexion</span
-                                        >
-                                        <span class="menu-list-subtitle" data-i18n="header.menu_logout_desc"
-                                            >Quitter la session</span
+                                        <span class="menu-list-title" data-i18n="header.menu_version"
+                                            >Version</span
                                        >
+                                        <span class="menu-list-subtitle"
+                                            >ObsiGate
+                                            <span
+                                                class="version-badge"
+                                                id="version-badge"
+                                                title="Version ObsiGate"
+                                            ></span
+                                        ></span>
                                    </span>
-                                </button>
+                                </div>
                            </div>
                        </div>
                    </div>
@@ -1052,6 +1049,43 @@
                            <span>Aucune conversation</span>
                        </div>
                    </div>
+
+                    <!-- User section (bottom of the sidebar, #112) -->
+                    <div class="sidebar-user" id="sidebar-user" hidden>
+                        <button
+                            class="sidebar-user-profile"
+                            id="sidebar-user-profile"
+                            type="button"
+                            title="Profil"
+                        >
+                            <span
+                                class="sidebar-user-avatar"
+                                id="sidebar-user-avatar"
+                                aria-hidden="true"
+                            ></span>
+                            <span class="sidebar-user-meta">
+                                <span
+                                    class="sidebar-user-name user-display-name"
+                                    id="sidebar-user-name"
+                                ></span>
+                                <span
+                                    class="sidebar-user-role"
+                                    id="sidebar-user-role"
+                                ></span>
+                            </span>
+                        </button>
+                        <button
+                            class="sidebar-user-logout"
+                            id="sidebar-user-logout"
+                            type="button"
+                            title="Déconnexion"
+                        >
+                            <i
+                                data-lucide="log-out"
+                                style="width: 16px; height: 16px"
+                            ></i>
+                        </button>
+                    </div>
                </aside>

                <!-- Sidebar resize handle -->
@@ -1517,6 +1551,17 @@
                    <nav class="help-nav" id="config-nav">
                        <div class="help-nav-header">
                            <div class="help-nav-title" data-i18n="config.title">Configuration</div>
+                            <button
+                                class="help-toc-close"
+                                id="config-toc-close"
+                                data-i18n-attr="aria-label:config.toc_close"
+                                aria-label="Fermer le sommaire"
+                            >
+                                <i
+                                    data-lucide="x"
+                                    style="width: 16px; height: 16px"
+                                ></i>
+                            </button>
                        </div>
                        <div class="help-nav-search-wrap">
                            <input
@@ -1547,28 +1592,152 @@
                            </button>
                        </div>
                        <ul class="help-nav-list">
+<li><a href="#cfg-profile" class="help-nav-link" data-i18n="settings.profile"></a></li>
+<li><a href="#cfg-security" class="help-nav-link" data-i18n="settings.security"></a></li>
+<li><a href="#cfg-themes" class="help-nav-link" data-i18n="settings.themes"></a></li>
 <li><a href="#cfg-search" class="help-nav-link" data-i18n="help.nav_search"></a></li>
 <li><a href="#cfg-recent" class="help-nav-link" data-i18n="config.section_recent"></a></li>
-<li><a href="#cfg-backend-settings" class="help-nav-link" data-i18n="config.section_backend"></a></li>
 <li><a href="#cfg-tags" class="help-nav-link" data-i18n="config.section_tags"></a></li>
-<li><a href="#cfg-sync" class="help-nav-link" data-i18n="settings.sync"></a></li>
 <li><a href="#cfg-hidden-files" class="help-nav-link" data-i18n="config.section_hidden"></a></li>
+<li><a href="#cfg-sync" class="help-nav-link" data-i18n="settings.sync"></a></li>
+<li><a href="#cfg-backend-settings" class="help-nav-link" data-i18n="config.section_backend"></a></li>
 <li><a href="#cfg-diags" class="help-nav-link" data-i18n="settings.diagnostics"></a></li>
 <li><a href="#cfg-ai" class="help-nav-link" data-i18n="settings.ai"></a></li>
 <li><a href="#cfg-sources" class="help-nav-link" data-i18n="config.section_sources">Sources connectées</a></li>
-<li><a href="#cfg-themes" class="help-nav-link" data-i18n="settings.themes"></a></li>
-<li><a href="#cfg-profile" class="help-nav-link" data-i18n="settings.profile"></a></li>
-<li><a href="#cfg-security" class="help-nav-link" data-i18n="settings.security"></a></li>
 <li><a href="#cfg-tokens" class="help-nav-link" data-i18n="config.nav_tokens">🔑 Clés API & MCP</a></li>
 <li><a href="#cfg-push" class="help-nav-link" data-i18n="config.section_push">Notifications push</a></li>
-<li><a href="#cfg-plugins" class="help-nav-link" data-i18n="config.section_plugins">🧩 Plugins</a></li>
-<li><a href="#cfg-about" class="help-nav-link" data-i18n="settings.about"></a></li>
 <li><a href="#cfg-webhooks" class="help-nav-link" data-i18n="config.section_webhooks"></a></li>
 <li><a href="#cfg-partages-publics" class="help-nav-link" data-i18n="config.section_shares"></a></li>
+<li><a href="#cfg-plugins" class="help-nav-link" data-i18n="config.section_plugins">🧩 Plugins</a></li>
+<li><a href="#cfg-about" class="help-nav-link" data-i18n="settings.about"></a></li>
 </ul>
                    </nav>
                    <div class="help-content" id="config-scroll">
                        <div class="config-content">
+                            <!-- Profil -->
+                            <section
+                                class="config-section help-section"
+                                id="cfg-profile"
+                            >
+                                <h2 data-i18n="config.profile">👤 Profil utilisateur</h2>
+                                <p class="config-description" data-i18n="config.profile_desc">
+                                    Préférences personnelles pour personnaliser
+                                    l'expérience ObsiGate.
+                                </p>
+                                <div class="profile-form" id="profile-form">
+                                    <div class="profile-field profile-avatar-field" id="profile-avatar-field">
+                                        <span class="profile-avatar-label" id="profile-avatar-label" data-i18n="config.avatar_label">Photo de profil</span>
+                                        <div class="profile-avatar-row">
+                                            <div
+                                                class="profile-avatar-preview"
+                                                id="profile-avatar-preview"
+                                                data-i18n-attr="title:config.avatar_choose;aria-label:config.avatar_choose"
+                                                title="Choisir une image"
+                                                aria-label="Choisir une image"
+                                            >
+                                                <img id="profile-avatar-img" alt="" hidden />
+                                                <span class="profile-avatar-initials" id="profile-avatar-initials" aria-hidden="true"></span>
+                                                <button
+                                                    type="button"
+                                                    class="profile-avatar-overlay"
+                                                    id="profile-avatar-overlay"
+                                                    data-i18n-attr="title:config.avatar_choose;aria-label:config.avatar_choose"
+                                                    title="Choisir une image"
+                                                    aria-label="Choisir une image"
+                                                >
+                                                    <i data-lucide="camera" style="width: 18px; height: 18px"></i>
+                                                </button>
+                                            </div>
+                                            <div class="profile-avatar-actions">
+                                                <button type="button" class="config-btn-secondary" id="profile-avatar-choose" data-i18n="config.avatar_choose">Choisir une image</button>
+                                                <button type="button" class="config-btn-secondary profile-avatar-remove-btn" id="profile-avatar-remove" data-i18n="config.avatar_remove" hidden>Supprimer la photo</button>
+                                                <input
+                                                    type="file"
+                                                    id="profile-avatar-input"
+                                                    accept="image/png,image/jpeg,image/webp"
+                                                    hidden
+                                                />
+                                                <span class="profile-hint" data-i18n="config.avatar_hint">PNG, JPG ou WEBP — image carrée recadrée et réduite à 256 px.</span>
+                                            </div>
+                                        </div>
+                                        <span class="profile-avatar-label" data-i18n="config.avatar_presets_label">Avatars prédéfinis</span>
+                                        <div
+                                            class="profile-avatar-presets"
+                                            id="profile-avatar-presets"
+                                            role="radiogroup"
+                                            data-i18n-attr="aria-label:config.avatar_presets_label"
+                                            aria-label="Avatars prédéfinis"
+                                        >
+                                            <button type="button" class="profile-avatar-preset" data-avatar="Chat.jpg" role="radio" aria-checked="false"><img src="/static/icons/avatar/Chat.jpg" alt="" loading="lazy" /></button>
+                                            <button type="button" class="profile-avatar-preset" data-avatar="chien.jpg" role="radio" aria-checked="false"><img src="/static/icons/avatar/chien.jpg" alt="" loading="lazy" /></button>
+                                            <button type="button" class="profile-avatar-preset" data-avatar="elephan.jpg" role="radio" aria-checked="false"><img src="/static/icons/avatar/elephan.jpg" alt="" loading="lazy" /></button>
+                                            <button type="button" class="profile-avatar-preset" data-avatar="hibou.jpg" role="radio" aria-checked="false"><img src="/static/icons/avatar/hibou.jpg" alt="" loading="lazy" /></button>
+                                            <button type="button" class="profile-avatar-preset" data-avatar="koala.jpg" role="radio" aria-checked="false"><img src="/static/icons/avatar/koala.jpg" alt="" loading="lazy" /></button>
+                                            <button type="button" class="profile-avatar-preset" data-avatar="lapin.jpg" role="radio" aria-checked="false"><img src="/static/icons/avatar/lapin.jpg" alt="" loading="lazy" /></button>
+                                            <button type="button" class="profile-avatar-preset" data-avatar="lion.jpg" role="radio" aria-checked="false"><img src="/static/icons/avatar/lion.jpg" alt="" loading="lazy" /></button>
+                                            <button type="button" class="profile-avatar-preset" data-avatar="ours.jpg" role="radio" aria-checked="false"><img src="/static/icons/avatar/ours.jpg" alt="" loading="lazy" /></button>
+                                            <button type="button" class="profile-avatar-preset" data-avatar="penda.jpg" role="radio" aria-checked="false"><img src="/static/icons/avatar/penda.jpg" alt="" loading="lazy" /></button>
+                                            <button type="button" class="profile-avatar-preset" data-avatar="pingouin.jpg" role="radio" aria-checked="false"><img src="/static/icons/avatar/pingouin.jpg" alt="" loading="lazy" /></button>
+                                            <button type="button" class="profile-avatar-preset" data-avatar="raton.jpg" role="radio" aria-checked="false"><img src="/static/icons/avatar/raton.jpg" alt="" loading="lazy" /></button>
+                                            <button type="button" class="profile-avatar-preset" data-avatar="tigre.jpg" role="radio" aria-checked="false"><img src="/static/icons/avatar/tigre.jpg" alt="" loading="lazy" /></button>
+                                        </div>
+                                        <p class="profile-avatar-error hidden" id="profile-avatar-error" role="alert"></p>
+                                    </div>
+                                    <div class="profile-field">
+                                        <label for="profile-lang" data-i18n="config.lang_label">Langue préférée</label>
+                                        <select id="profile-lang" class="config-select">
+                                            <option value="fr">Francais</option>
+                                            <option value="en">English</option>
+                                            <option value="es">Espanol</option>
+                                            <option value="de">Deutsch</option>
+                                        </select>
+                                        <span class="profile-hint" data-i18n="config.lang_hint">Utilisée par l'autocomplétion et le ghost text.</span>
+                                    </div>
+                                    <div class="profile-field">
+                                        <label for="profile-name" data-i18n="config.display_name">Nom d'affichage</label>
+                                        <input type="text" id="profile-name" class="config-input" placeholder="Votre nom" maxlength="60">
+                                    </div>
+                                    <button class="config-save-btn" id="profile-save" data-i18n="config.save">Enregistrer</button>
+                                    <button class="config-save-btn" id="profile-logout" style="background:var(--danger-bg);color:var(--danger);border-color:var(--danger);margin-left:8px" data-i18n="config.logout" onclick="if(window.handleLogout)window.handleLogout();else{doLogoutFallback()}">Déconnexion</button>
+                                    <span class="profile-saved" id="profile-saved" style="display:none" data-i18n="config.saved">✓ Sauvegardé</span>
+                                </div>
+                            </section>
+
+                            <!-- Sécurité du compte (MFA) -->
+                            <section
+                                class="config-section help-section"
+                                id="cfg-security"
+                            >
+                                <h2 data-i18n="settings.security">🔒 Sécurité du compte</h2>
+                                <p class="config-description" data-i18n="settings.security_desc">
+                                    Activez l'authentification à deux facteurs (2FA) pour renforcer la sécurité de votre compte.
+                                </p>
+                                <div id="mfa-settings">
+                                    <div id="mfa-status" class="mfa-status-section">
+                                        <div class="mfa-status-row">
+                                            <span class="mfa-status-label" data-i18n="mfa.status_label">Authentification 2FA</span>
+                                            <span id="mfa-status-badge" class="mfa-badge mfa-badge-off" data-i18n="mfa.disabled">Désactivée</span>
+                                        </div>
+                                        <div id="mfa-setup-area"></div>
+                                    </div>
+                                </div>
+                            </section>
+
+                            <!-- Themes -->
+                            <section
+                                class="config-section help-section"
+                                id="cfg-themes"
+                            >
+                                <h2 data-i18n="auto.c14b5603">🎨 Thèmes</h2>
+                                <p class="config-description" data-i18n="auto.caac40b9">
+                                    Choisissez un thème visuel. Chaque thème
+                                    offre un mode sombre, clair, contraste élevé et sépia.
+                                </p>
+                                <div class="theme-grid" id="theme-grid">
+                                    <div class="config-diag-loading" data-i18n="common.loading">Chargement...</div>
+                                </div>
+                            </section>
+
                            <!-- Performance Settings - Frontend -->
                            <section
                                class="config-section help-section"
@@ -1714,6 +1883,182 @@
                                </div>
                            </section>

+                            <!-- Tag Filtering (existing) -->
+                            <section class="config-section help-section" id="cfg-tags">
+                                <h2 data-i18n="config.tag_filtering_label">Filtrage de tags</h2>
+                                <p class="config-description" data-i18n="auto.e0b8a606">
+                                    Définissez les patterns de tags à masquer
+                                    dans la sidebar. Vous pouvez utiliser des
+                                    wildcards pour cibler les tags de template.
+                                </p>
+
+                                <div
+                                    class="config-filters-list"
+                                    id="config-filters-list"
+                                ></div>
+
+                                <div class="config-add-pattern">
+                                    <input
+                                        type="text"
+                                        id="config-pattern-input"
+                                        placeholder="Ex: #&lt;% ... %&gt; ou #{{ ... }}"
+                                        class="config-input"
+                                    />
+                                    <button id="config-add-btn"
+                                        class="config-btn-add" data-i18n="config.add_webhook">
+                                        Ajouter
+                                    </button>
+                                </div>
+
+                                <div
+                                    class="config-regex-preview"
+                                    id="config-regex-preview"
+                                    style="display: none"
+                                >
+                                    <small
+                                        >Regex :
+                                        <code id="config-regex-code"></code
+                                    ></small>
+                                </div>
+                            </section>
+
+                            <!-- Hidden Files/Folders Configuration -->
+                            <section id="cfg-hidden-files" class="config-section help-section">
+                                <h2 data-i18n="auto.f8ba6127">🗂️ Fichiers cachés</h2>
+                                <p class="config-description">
+                                    Contrôlez l'affichage des fichiers/dossiers
+                                    cachés (commençant par <code>.</code>) par
+                                    vault.
+                                </p>
+                                <p
+                                    class="config-hint"
+                                    style="
+                                        margin-bottom: 12px;
+                                        padding: 8px;
+                                        background: var(--background-secondary);
+                                        border-radius: 4px;
+                                    "
+                                >
+                                    i️ <strong data-i18n="config.note">Note :</strong> Tous les fichiers
+                                    sont toujours indexés et cherchables. Ce
+                                    paramètre contrôle uniquement leur
+                                    visibilité dans l'interface.
+                                </p>
+
+                                <div id="hidden-files-vault-list">
+                                    <!-- Vault-specific settings will be injected here -->
+                                </div>
+
+                                <div
+                                    class="config-actions-row"
+                                    style="margin-top: 16px"
+                                >
+                                    <button
+                                        class="config-btn-save"
+                                        id="cfg-save-hidden-files"
+                                    >
+                                        💾 Sauvegarder
+                                    </button>
+                                </div>
+                            </section>
+
+                            <!-- Watcher / Synchronisation -->
+                            <section
+                                class="config-section help-section"
+                                id="cfg-sync"
+                            >
+                                <h2 data-i18n="config.section_watcher">Synchronisation automatique</h2>
+                                <p class="config-description" data-i18n="auto.d33601dc">
+                                    Surveillance des fichiers en temps réel via
+                                    watchdog. Les modifications sont détectées
+                                    automatiquement et l'index est mis à jour
+                                    sans redémarrage.
+                                </p>
+
+                                <div class="config-row">
+                                    <label
+                                        class="config-label"
+                                        for="cfg-watcher-enabled"
+                                        >Activer la surveillance</label
+                                    >
+                                    <label class="config-toggle">
+                                        <input
+                                            type="checkbox"
+                                            id="cfg-watcher-enabled"
+                                            checked
+                                        />
+                                        <span
+                                            class="config-toggle-slider"
+                                        ></span>
+                                    </label>
+                                    <span class="config-hint"
+                                        >Activer/désactiver la surveillance
+                                        automatique des fichiers</span
+                                    >
+                                </div>
+                                <div class="config-row">
+                                    <label
+                                        class="config-label"
+                                        for="cfg-watcher-polling"
+                                        >Mode polling (fallback)</label
+                                    >
+                                    <label class="config-toggle">
+                                        <input
+                                            type="checkbox"
+                                            id="cfg-watcher-polling"
+                                        />
+                                        <span
+                                            class="config-toggle-slider"
+                                        ></span>
+                                    </label>
+                                    <span class="config-hint"
+                                        >Forcer le mode polling au lieu de
+                                        inotify natif (utile si le mode natif ne
+                                        fonctionne pas)</span
+                                    >
+                                </div>
+                                <div class="config-row">
+                                    <label
+                                        class="config-label"
+                                        for="cfg-watcher-interval"
+                                        >Intervalle polling (s)</label
+                                    >
+                                    <input
+                                        type="number"
+                                        id="cfg-watcher-interval"
+                                        class="config-input config-input--num"
+                                        min="1"
+                                        max="30"
+                                        step="1"
+                                        value="5"
+                                    />
+                                    <span class="config-hint"
+                                        >Intervalle de scrutation en mode
+                                        polling (1-30 secondes)</span
+                                    >
+                                </div>
+                                <div class="config-row">
+                                    <label
+                                        class="config-label"
+                                        for="cfg-watcher-debounce"
+                                        >Debounce (s)</label
+                                    >
+                                    <input
+                                        type="number"
+                                        id="cfg-watcher-debounce"
+                                        class="config-input config-input--num"
+                                        min="0.5"
+                                        max="10"
+                                        step="0.5"
+                                        value="2"
+                                    />
+                                    <span class="config-hint"
+                                        >Délai avant traitement des changements
+                                        groupés (0.5-10 secondes)</span
+                                    >
+                                </div>
+                            </section>
+
                            <!-- Performance Settings - Backend -->
                            <section id="cfg-backend-settings" class="config-section help-section">
                                <h2 data-i18n="config.section_backend">
@@ -1833,7 +2178,6 @@
                                        >Nombre max de tokens élargis par préfixe (10-200)</span
                                    >
                                </div>
-                            </section>
                                <div class="config-actions-row">
                                    <button class="config-btn-save"
                                        id="cfg-save-backend" data-i18n="help.shortcut_save">
@@ -1850,182 +2194,6 @@
                                </div>
                            </section>

-                            <!-- Tag Filtering (existing) -->
-                            <section class="config-section help-section">
-                                <h2 id="cfg-tags" data-i18n="config.tag_filtering_label">Filtrage de tags</h2>
-                                <p class="config-description" data-i18n="auto.e0b8a606">
-                                    Définissez les patterns de tags à masquer
-                                    dans la sidebar. Vous pouvez utiliser des
-                                    wildcards pour cibler les tags de template.
-                                </p>
-
-                                <div
-                                    class="config-filters-list"
-                                    id="config-filters-list"
-                                ></div>
-
-                                <div class="config-add-pattern">
-                                    <input
-                                        type="text"
-                                        id="config-pattern-input"
-                                        placeholder="Ex: #&lt;% ... %&gt; ou #{{ ... }}"
-                                        class="config-input"
-                                    />
-                                    <button id="config-add-btn"
-                                        class="config-btn-add" data-i18n="config.add_webhook">
-                                        Ajouter
-                                    </button>
-                                </div>
-
-                                <div
-                                    class="config-regex-preview"
-                                    id="config-regex-preview"
-                                    style="display: none"
-                                >
-                                    <small
-                                        >Regex :
-                                        <code id="config-regex-code"></code
-                                    ></small>
-                                </div>
-                            </section>
-
-                            <!-- Watcher / Synchronisation -->
-                            <section
-                                class="config-section help-section"
-                                id="cfg-sync"
-                            >
-                                <h2 data-i18n="config.section_watcher">Synchronisation automatique</h2>
-                                <p class="config-description" data-i18n="auto.d33601dc">
-                                    Surveillance des fichiers en temps réel via
-                                    watchdog. Les modifications sont détectées
-                                    automatiquement et l'index est mis à jour
-                                    sans redémarrage.
-                                </p>
-
-                                <div class="config-row">
-                                    <label
-                                        class="config-label"
-                                        for="cfg-watcher-enabled"
-                                        >Activer la surveillance</label
-                                    >
-                                    <label class="config-toggle">
-                                        <input
-                                            type="checkbox"
-                                            id="cfg-watcher-enabled"
-                                            checked
-                                        />
-                                        <span
-                                            class="config-toggle-slider"
-                                        ></span>
-                                    </label>
-                                    <span class="config-hint"
-                                        >Activer/désactiver la surveillance
-                                        automatique des fichiers</span
-                                    >
-                                </div>
-                                <div class="config-row">
-                                    <label
-                                        class="config-label"
-                                        for="cfg-watcher-polling"
-                                        >Mode polling (fallback)</label
-                                    >
-                                    <label class="config-toggle">
-                                        <input
-                                            type="checkbox"
-                                            id="cfg-watcher-polling"
-                                        />
-                                        <span
-                                            class="config-toggle-slider"
-                                        ></span>
-                                    </label>
-                                    <span class="config-hint"
-                                        >Forcer le mode polling au lieu de
-                                        inotify natif (utile si le mode natif ne
-                                        fonctionne pas)</span
-                                    >
-                                </div>
-                                <div class="config-row">
-                                    <label
-                                        class="config-label"
-                                        for="cfg-watcher-interval"
-                                        >Intervalle polling (s)</label
-                                    >
-                                    <input
-                                        type="number"
-                                        id="cfg-watcher-interval"
-                                        class="config-input config-input--num"
-                                        min="1"
-                                        max="30"
-                                        step="1"
-                                        value="5"
-                                    />
-                                    <span class="config-hint"
-                                        >Intervalle de scrutation en mode
-                                        polling (1-30 secondes)</span
-                                    >
-                                </div>
-                                <div class="config-row">
-                                    <label
-                                        class="config-label"
-                                        for="cfg-watcher-debounce"
-                                        >Debounce (s)</label
-                                    >
-                                    <input
-                                        type="number"
-                                        id="cfg-watcher-debounce"
-                                        class="config-input config-input--num"
-                                        min="0.5"
-                                        max="10"
-                                        step="0.5"
-                                        value="2"
-                                    />
-                                    <span class="config-hint"
-                                        >Délai avant traitement des changements
-                                        groupés (0.5-10 secondes)</span
-                                    >
-                                </div>
-                            </section>
-
-                            <!-- Hidden Files/Folders Configuration -->
-                            <section id="cfg-hidden-files" class="config-section help-section">
-                                <h2 data-i18n="auto.f8ba6127">🗂️ Fichiers cachés</h2>
-                                <p class="config-description">
-                                    Contrôlez l'affichage des fichiers/dossiers
-                                    cachés (commençant par <code>.</code>) par
-                                    vault.
-                                </p>
-                                <p
-                                    class="config-hint"
-                                    style="
-                                        margin-bottom: 12px;
-                                        padding: 8px;
-                                        background: var(--background-secondary);
-                                        border-radius: 4px;
-                                    "
-                                >
-                                    i️ <strong data-i18n="config.note">Note :</strong> Tous les fichiers
-                                    sont toujours indexés et cherchables. Ce
-                                    paramètre contrôle uniquement leur
-                                    visibilité dans l'interface.
-                                </p>
-
-                                <div id="hidden-files-vault-list">
-                                    <!-- Vault-specific settings will be injected here -->
-                                </div>
-
-                                <div
-                                    class="config-actions-row"
-                                    style="margin-top: 16px"
-                                >
-                                    <button
-                                        class="config-btn-save"
-                                        id="cfg-save-hidden-files"
-                                    >
-                                        💾 Sauvegarder
-                                    </button>
-                                </div>
-                            </section>
-
                            <!-- Diagnostics -->
                            <section
                                class="config-section help-section"
@@ -2282,72 +2450,6 @@
                                </div>
                            </section>

-                            <!-- Themes -->
-                            <section
-                                class="config-section help-section"
-                                id="cfg-themes"
-                            >
-                                <h2 data-i18n="auto.c14b5603">🎨 Thèmes</h2>
-                                <p class="config-description" data-i18n="auto.caac40b9">
-                                    Choisissez un thème visuel. Chaque thème
-                                    offre un mode sombre, clair, contraste élevé et sépia.
-                                </p>
-                                <div class="theme-grid" id="theme-grid">
-                                    <div class="config-diag-loading" data-i18n="common.loading">Chargement...</div>
-                                </div>
-                            </section>
-
-                            <!-- Profil -->
-                            <section
-                                class="config-section help-section"
-                                id="cfg-profile"
-                            >
-                                <h2 data-i18n="config.profile">👤 Profil utilisateur</h2>
-                                <p class="config-description" data-i18n="config.profile_desc">
-                                    Préférences personnelles pour personnaliser
-                                    l'expérience ObsiGate.
-                                </p>
-                                <div class="profile-form" id="profile-form">
-                                    <div class="profile-field">
-                                        <label for="profile-lang" data-i18n="config.lang_label">Langue préférée</label>
-                                        <select id="profile-lang" class="config-select">
-                                            <option value="fr">Francais</option>
-                                            <option value="en">English</option>
-                                            <option value="es">Espanol</option>
-                                            <option value="de">Deutsch</option>
-                                        </select>
-                                        <span class="profile-hint" data-i18n="config.lang_hint">Utilisée par l'autocomplétion et le ghost text.</span>
-                                    </div>
-                                    <div class="profile-field">
-                                        <label for="profile-name" data-i18n="config.display_name">Nom d'affichage</label>
-                                        <input type="text" id="profile-name" class="config-input" placeholder="Votre nom" maxlength="60">
-                                    </div>
-                                    <button class="config-save-btn" id="profile-save" data-i18n="config.save">Enregistrer</button>
-                                    <button class="config-save-btn" id="profile-logout" style="background:var(--danger-bg);color:var(--danger);border-color:var(--danger);margin-left:8px" data-i18n="config.logout" onclick="if(window.handleLogout)window.handleLogout();else{doLogoutFallback()}">Déconnexion</button>
-                                    <span class="profile-saved" id="profile-saved" style="display:none" data-i18n="config.saved">✓ Sauvegardé</span>
-                                </div>
-                            </section>
-
-                            <!-- Sécurité du compte (MFA) -->
-                            <section
-                                class="config-section help-section"
-                                id="cfg-security"
-                            >
-                                <h2 data-i18n="settings.security">🔒 Sécurité du compte</h2>
-                                <p class="config-description" data-i18n="settings.security_desc">
-                                    Activez l'authentification à deux facteurs (2FA) pour renforcer la sécurité de votre compte.
-                                </p>
-                                <div id="mfa-settings">
-                                    <div id="mfa-status" class="mfa-status-section">
-                                        <div class="mfa-status-row">
-                                            <span class="mfa-status-label" data-i18n="mfa.status_label">Authentification 2FA</span>
-                                            <span id="mfa-status-badge" class="mfa-badge mfa-badge-off" data-i18n="mfa.disabled">Désactivée</span>
-                                        </div>
-                                        <div id="mfa-setup-area"></div>
-                                    </div>
-                                </div>
-                            </section>
-
                            <!-- Clés API / MCP (#107) -->
                            <section id="cfg-tokens" class="config-section help-section">
                                <h2 data-i18n="config.section_tokens">🔑 Clés API &amp; MCP</h2>
@@ -2406,34 +2508,6 @@
                                                            </div>
                                                        </section>

-                                                                                                                <!-- Plugins -->
-                                                                                                                <section
-                                                                                                                    class="config-section help-section"
-                                                                                                                    id="cfg-plugins"
-                                                                                                                >
-                                                                                                                    <h2 data-i18n="config.section_plugins">🧩 Plugins</h2>
-                                                                                                                    <p class="config-description" data-i18n="plugins.description">
-                                                                                                                        Extend ObsiGate with custom renderers, search filters, and editor actions.
-                                                                                                                    </p>
-                                                                                                                    <div id="plugins-settings-container"></div>
-                                                                                                                </section>
-
-                                                                                                                <!-- À propos -->
-                                                        <section
-                                                            class="config-section help-section"
-                                                            id="cfg-about"
-                                                        >
-                                <h2 data-i18n="auto.a3319169">📦 À propos</h2>
-                                <div
-                                    id="config-about"
-                                    class="config-diagnostics"
-                                >
-                                    <div class="config-diag-loading" data-i18n="common.loading">
-                                        Chargement...
-                                    </div>
-                                </div>
-                            </section>
-
                            <!-- Webhooks -->
                            <section id="cfg-webhooks" class="config-section help-section">
                                <h2>🔔 Webhooks</h2>
@@ -2465,14 +2539,41 @@
                            </section>

                            <!-- Partages publics -->
-                            <section class="config-section help-section">
-                                <h2 id="cfg-partages-publics">📤 Partages publics</h2>
+                            <section class="config-section help-section" id="cfg-partages-publics">
+                                <h2>📤 Partages publics</h2>
                                <p class="config-description">
                                    Liens de partage publics pour des documents
                                    (lecture seule, sans authentification).
                                </p>
                                <div id="shares-list"></div>
                            </section>
+
+                            <!-- Plugins -->
+                            <section
+                                class="config-section help-section"
+                                id="cfg-plugins"
+                            >
+                                <h2 data-i18n="config.section_plugins">🧩 Plugins</h2>
+                                <p class="config-description" data-i18n="plugins.description">
+                                    Extend ObsiGate with custom renderers, search filters, and editor actions.
+                                </p>
+                            </section>
+
+                            <!-- À propos -->
+                            <section
+                                class="config-section help-section"
+                                id="cfg-about"
+                            >
+                                <h2 data-i18n="auto.a3319169">📦 À propos</h2>
+                                <div
+                                    id="config-about"
+                                    class="config-diagnostics"
+                                >
+                                    <div class="config-diag-loading" data-i18n="common.loading">
+                                        Chargement...
+                                    </div>
+                                </div>
+                            </section>
                        </div>
                    </div>
                </div>
@@ -3293,6 +3394,10 @@
                                    <strong data-i18n="sidebar.tab_tags">Tags</strong> <span data-i18n="help.desc_tags_tab">: Nuage de tags
                                    cliquables</span>
                                </li>
+                                <li>
+                                    <strong data-i18n="help.sidebar_user">Compte</strong> <span data-i18n="help.desc_sidebar_user">: Avatar, nom,
+                                    rôle et déconnexion en bas de la sidebar</span>
+                                </li>
                            </ul>
                            <p data-i18n="help.sidebar_features">Fonctionnalités de la sidebar :</p>
                            <ul>
@@ -4560,6 +4665,13 @@
                                    chercher) ; les actions de modification demandent une
                                    confirmation avec aperçu des changements.
                                </li>
+                                <li data-i18n="help.assistant_agent_run">
+                                    Les actions s'affichent dans le fil : l'assistant regroupe les
+                                    modifications en une seule approbation (« Tout approuver ») et
+                                    met à jour l'arborescence et le document ouvert dès qu'elles
+                                    sont appliquées. Le bouton d'envoi devient « Stop » pour
+                                    interrompre l'exécution à tout moment.
+                                </li>
                                <li data-i18n="help.assistant_resize">
                                    Le bord gauche du panneau est redimensionnable ; la largeur est
                                    mémorisée.
@@ -5539,7 +5651,7 @@ curl -X POST https://votre-serveur.com/webhook \
                    data-lucide="folder-open"
                    style="width: 20px; height: 20px"
                ></i>
-                <span class="mt-label">settings.search</span>
+                <span class="mt-label" data-i18n="settings.explorer">Explorateur</span>
            </button>
            <button
                class="mt-btn"
@@ -6,6 +6,7 @@ import * as UI from './ui.js';
 import * as Utils from './utils.js';
 import { initI18n, t } from './i18n.js';
 import { initAIFab } from './ai-fab.js';
+import { initNowPlaying } from './now-playing.js';

 // Wire up AI toolbar toast (avoids circular import in utils.js)
 window._obsigateShowToast = UI.showToast;
@@ -113,6 +114,7 @@ async function init() {
  setupFocusMode();
  Utils.safeCreateIcons();
  initAIFab();
+  initNowPlaying();
 }

 document.addEventListener("DOMContentLoaded", async () => {
@@ -1,7 +1,7 @@
 /* ObsiGate — Authentication: API helper, AuthManager, login form, AdminPanel */
 import { state } from './state.js';
 import { safeCreateIcons, escapeHtml } from './utils.js';
-import { showToast, closeHeaderMenu } from './ui.js';
+import { showToast, closeHeaderMenu, closeMobileSidebar } from './ui.js';
 import { t, getLocale, setLocale } from './i18n.js';
 import { showWelcome } from './viewer.js';

@@ -13,6 +13,15 @@ window.handleLogout = () => {
  AuthManager.logout();
 };

+/** Two-letter initials for the sidebar account avatar (#112). */
+function userInitials(name) {
+  const parts = String(name || "").trim().split(/\s+/).filter(Boolean);
+  if (!parts.length) return "?";
+  const first = parts[0][0] || "";
+  const last = parts.length > 1 ? parts[parts.length - 1][0] : "";
+  return (first + last).toUpperCase() || "?";
+}
+
 // ---------------------------------------------------------------------------
 // API helpers
 // ---------------------------------------------------------------------------
@@ -116,6 +125,18 @@ const AuthManager = {
    return raw ? JSON.parse(raw) : null;
  },

+  /** Merge fields into the cached user object (#113 — profile avatar). */
+  updateCachedUser(fields) {
+    const next = { ...(this.getUser() || {}), ...fields };
+    sessionStorage.setItem(this.USER_KEY, JSON.stringify(next));
+    return next;
+  },
+
+  /** Whether authentication is enabled on this instance (#113). */
+  isAuthEnabled() {
+    return !!this._authEnabled;
+  },
+
  isTokenExpired() {
    const expiry = sessionStorage.getItem(this.TOKEN_EXPIRY_KEY);
    if (!expiry) return true;
@@ -323,22 +344,58 @@ const AuthManager = {
    const app = document.getElementById("app");
    if (login) login.classList.add("hidden");
    if (app) app.classList.remove("hidden");
-    this.renderUserMenu();
+    this.renderUserSection();
  },

-  renderUserMenu() {
+  /**
+   * Render the account block pinned at the bottom of the sidebar (#112) —
+   * the user identity/logout no longer live in the header.
+   */
+  renderUserSection() {
    const user = this.getUser();
-    const userMenu = document.getElementById("user-menu");
-    if (!userMenu) return;
+    const section = document.getElementById("sidebar-user");
    if (!user || !this._authEnabled) {
-      userMenu.innerHTML = "";
+      if (section) section.hidden = true;
      return;
    }
-    userMenu.innerHTML = '<span class="user-display-name">' + (user.display_name || user.username) + "</span>" + '<button class="btn-logout" id="logout-btn" title="' + t('auth.logout_title') + '" onclick="window.handleLogout()"><i data-lucide="log-out" style="width:14px;height:14px"></i></button>';
+    if (!section) return;
+
+    const name = user.display_name || user.username || "";
+    const nameEl = document.getElementById("sidebar-user-name");
+    if (nameEl) nameEl.textContent = name;
+    const roleEl = document.getElementById("sidebar-user-role");
+    if (roleEl) roleEl.textContent = user.role === "admin" ? t("sidebar.user_role_admin") : t("sidebar.user_role_user");
+    const avatarEl = document.getElementById("sidebar-user-avatar");
+    if (avatarEl) {
+      // #113: custom avatar image when set, initials as the fallback.
+      if (user.avatar) {
+        avatarEl.textContent = "";
+        const img = document.createElement("img");
+        img.src = user.avatar;
+        img.alt = "";
+        img.className = "sidebar-user-avatar-img";
+        avatarEl.appendChild(img);
+      } else {
+        avatarEl.textContent = userInitials(name);
+      }
+    }
+    section.hidden = false;
    safeCreateIcons();

-    const logoutBtn = document.getElementById("logout-btn");
-    if (logoutBtn) logoutBtn.addEventListener("click", () => AuthManager.logout());
+    const logoutBtn = document.getElementById("sidebar-user-logout");
+    if (logoutBtn && !logoutBtn._obsigateBound) {
+      logoutBtn._obsigateBound = true;
+      logoutBtn.addEventListener("click", () => this.logout());
+    }
+    const profileBtn = document.getElementById("sidebar-user-profile");
+    if (profileBtn && !profileBtn._obsigateBound) {
+      profileBtn._obsigateBound = true;
+      profileBtn.addEventListener("click", () => {
+        closeMobileSidebar();
+        const trigger = document.getElementById("profile-open-btn");
+        if (trigger) trigger.click();
+      });
+    }

    const adminRow = document.getElementById("admin-menu-row");
    if (adminRow) {
@@ -355,6 +412,9 @@ const AuthManager = {
    }
  },

+  // Backwards-compatible alias (older callers/tests may use this name).
+  renderUserMenu() { this.renderUserSection(); },
+
  // ── Initialization ──────────────────────────────────────────────

  async checkAuthStatus() {
@@ -52,6 +52,22 @@ const PANEL_MIN_WIDTH = 320;
 const PANEL_MAX_WIDTH = 1000;
 const PANEL_WIDTH_KEY = 'obsigate-bookslm-width';

+// BUG-076 — Tools that mutate the vault: their execution must refresh the
+// sidebar tree immediately (the watcher SSE is delayed and directory-only
+// changes may not produce an index event).
+const MUTATING_TOOLS = new Set([
+  'create_file', 'create_directory', 'edit_file', 'append_to_file',
+  'rename_file', 'rename_directory', 'move_path', 'replace_in_files',
+  'delete_file', 'delete_directory', 'restore_backup',
+  'create_xlsx', 'create_docx', 'create_csv', 'create_pdf',
+]);
+// Subset carrying a concrete `vault` + `path`: the displayed document is
+// reloaded from disk so an open viewer/editor reflects the agent's write.
+const FILE_WRITE_TOOLS = new Set([
+  'edit_file', 'append_to_file', 'create_file', 'restore_backup',
+  'create_xlsx', 'create_docx', 'create_csv', 'create_pdf',
+]);
+
 /**
 * BUG-059 — Is this pointer press a scrollbar drag (and only that)?
 *
@@ -895,15 +911,14 @@ class BooksLM {
  }

  /**
-   * #93 — A write tool just modified a vault file. Notify the UI so the
-   * displayed document is reloaded from disk: otherwise the read view keeps the
-   * stale content, and an open editor buffer autosaves the old text back over
-   * the assistant's change (see utils.reloadExternalWrite).
+   * #93 / BUG-076 — A write tool just modified a vault file. Notify the UI so
+   * the displayed document is reloaded from disk: otherwise the read view keeps
+   * the stale content, and an open editor buffer autosaves the old text back
+   * over the assistant's change (see utils.reloadExternalWrite).
   */
  _notifyFileWritten(data) {
    if (!data || data.ok === false) return;
-    const WRITE_TOOLS = ['edit_file', 'append_to_file', 'create_file', 'restore_backup'];
-    if (WRITE_TOOLS.indexOf(data.name) === -1) return;
+    if (!FILE_WRITE_TOOLS.has(data.name)) return;
    const args = data.arguments || {};
    if (!args.vault || !args.path) return;
    window.dispatchEvent(
@@ -913,6 +928,24 @@ class BooksLM {
    );
  }

+  /**
+   * BUG-076 — Refresh the sidebar tree right after an agent mutation, without
+   * waiting for the (debounced) watcher SSE. Debounced so a batch of tool
+   * events (e.g. a folder plus its files) triggers a single refresh.
+   */
+  _scheduleTreeRefresh() {
+    if (this._treeRefreshTimer) clearTimeout(this._treeRefreshTimer);
+    this._treeRefreshTimer = setTimeout(async () => {
+      this._treeRefreshTimer = null;
+      try {
+        const m = await import('./sidebar.js');
+        if (m && typeof m.refreshSidebarTreePreservingState === 'function') {
+          await m.refreshSidebarTreePreservingState();
+        }
+      } catch { /* tree refresh is best-effort */ }
+    }, 250);
+  }
+
  // ── Rendering ───────────────────────────────────────────────────────

  _render() {
@@ -1041,7 +1074,11 @@ class BooksLM {
      }
    });

-    panel.querySelector('.bookslm-btn-send').addEventListener('click', () => this._sendMessage());
+    panel.querySelector('.bookslm-btn-send').addEventListener('click', () => {
+      // BUG-077: the same button stops the run while a response streams.
+      if (this._isLoading) this._stopGeneration();
+      else this._sendMessage();
+    });

    // Resizable panel (drag the left edge).
    const resizeHandle = panel.querySelector('.bookslm-resize-handle');
@@ -2665,6 +2702,17 @@ class BooksLM {
      return t('ai.tool_call', { name: call.name });
    }

+  /**
+   * BUG-074 — number of *action* steps of a message (reasoning notes are not
+   * actions). Falls back to the total when the block holds only thoughts so a
+   * “0 étape” label can never appear.
+   */
+  _actionStepCount(toolCalls) {
+    const list = toolCalls || [];
+    const actions = list.filter((c) => !(c.step && c.step.key === 'thought'));
+    return actions.length || list.length;
+  }
+
  /** Chevron used by every collapsible block (▶ closed / ▼ open, via CSS). */
  _chevron() {
    const c = document.createElement('span');
@@ -2698,13 +2746,32 @@ class BooksLM {
      dots.classList.add('bookslm-steps-dots');
      summary.appendChild(dots);
    }
-    const countKey = toolCalls.length > 1 ? 'ai.steps_count_plural' : 'ai.steps_count';
+    // BUG-074: the counter reflects *actions*, not reasoning notes, and the
+    // collapsed header also previews the first action so an “N étapes ▶” line
+    // is no longer an opaque title.
+    const actionCalls = toolCalls.filter((c) => !(c.step && c.step.key === 'thought'));
+    const count = this._actionStepCount(toolCalls);
+    const countKey = count > 1 ? 'ai.steps_count_plural' : 'ai.steps_count';
    const label = document.createElement('span');
    label.className = 'bookslm-steps-label';
-    label.textContent = t(countKey, { count: toolCalls.length });
+    label.textContent = t(countKey, { count });
    summary.appendChild(label);
+    const first = actionCalls[0];
+    let preview = '';
+    if (first) {
+      preview = this._stepText(first);
+      const title = document.createElement('span');
+      title.className = 'bookslm-steps-title';
+      title.textContent = `— ${preview}`;
+      summary.appendChild(title);
+    }
    summary.appendChild(this._chevron());
-    if (running) summary.setAttribute('aria-label', `${label.textContent} — ${t('ai.steps_running')}`);
+    if (running) {
+      summary.setAttribute(
+        'aria-label',
+        `${label.textContent}${preview ? ` — ${preview}` : ''} — ${t('ai.steps_running')}`,
+      );
+    }
    wrap.appendChild(summary);

    const body = document.createElement('div');
@@ -2804,8 +2871,11 @@ class BooksLM {
    const conf = msg.confirmation;
    const pending = conf.pending || {};
    const error = pending.error || pending;
-    const tool = error.tool || 'action';
-    const args = error.arguments || {};
+    // BUG-075: the run batches every mutating call of the LLM turn into
+    // `pending.actions`; fall back to the single legacy `error` shape.
+    const actions = (Array.isArray(pending.actions) && pending.actions.length)
+      ? pending.actions
+      : [{ id: error.id, tool: error.tool, arguments: error.arguments || {}, step: null }];

    const card = document.createElement('div');
    card.className = 'bookslm-action bookslm-confirm';
@@ -2814,23 +2884,48 @@ class BooksLM {
    meta.className = 'bookslm-action-meta';
    meta.innerHTML = '<span class="bookslm-action-icon">🔒</span>';
    const textEl = document.createElement('span');
-    textEl.textContent = t('ai.tool_call', { name: tool }) + (args.path ? ` — ${args.path}` : '');
+    if (actions.length > 1) {
+      textEl.textContent = t('ai.confirm_actions', { count: actions.length });
+    } else {
+      const tool = actions[0].tool || 'action';
+      const args = actions[0].arguments || {};
+      textEl.textContent = t('ai.tool_call', { name: tool }) + (args.path ? ` — ${args.path}` : '');
+    }
    meta.appendChild(textEl);
    card.appendChild(meta);

-    const diffHost = document.createElement('div');
-    diffHost.className = 'bookslm-confirm-diff';
-    if (conf._diffHtml) {
-      diffHost.innerHTML = conf._diffHtml;
-    } else if (!conf._diffLoading) {
-      conf._diffLoading = true;
-      this._fillConfirmationDiff(args, conf).then(() => this._renderMessages());
+    // One row per action with a diff preview when it writes file content.
+    const hasContent = (a) => {
+      const args = a.arguments || {};
+      return typeof args.content === 'string' && args.vault && args.path;
+    };
+    if (actions.length > 1) {
+      const list = document.createElement('div');
+      list.className = 'bookslm-confirm-actions';
+      for (const action of actions) {
+        const args = action.arguments || {};
+        const row = document.createElement('details');
+        row.className = 'bookslm-confirm-action';
+        const summary = document.createElement('summary');
+        const text = document.createElement('span');
+        text.textContent = this._stepText({ step: action.step, name: action.tool })
+          + (args.path ? ` — ${args.path}` : '');
+        summary.appendChild(text);
+        if (hasContent(action)) summary.appendChild(this._chevron());
+        row.appendChild(summary);
+        if (hasContent(action)) row.appendChild(this._diffHost(action, args));
+        list.appendChild(row);
+      }
+      card.appendChild(list);
+    } else if (hasContent(actions[0])) {
+      card.appendChild(this._diffHost(conf, actions[0].arguments || {}));
    }
-    card.appendChild(diffHost);

    const apply = document.createElement('button');
    apply.className = 'bookslm-action-apply';
-    apply.textContent = t('ai.action_apply');
+    apply.textContent = actions.length > 1
+      ? t('ai.action_apply_all', { count: actions.length })
+      : t('ai.action_apply');
    apply.addEventListener('click', async () => {
      apply.disabled = true;
      apply.textContent = t('ai.action_applying');
@@ -2839,7 +2934,9 @@ class BooksLM {
        apply.textContent = t('ai.action_applied');
      } catch (e) {
        apply.disabled = false;
-        apply.textContent = t('ai.action_apply');
+        apply.textContent = actions.length > 1
+          ? t('ai.action_apply_all', { count: actions.length })
+          : t('ai.action_apply');
        showToast(t('ai.action_failed', { error: e.message }), 'error');
      }
    });
@@ -2847,6 +2944,19 @@ class BooksLM {
    return card;
  }

+  /** Diff host for one confirmation action (lazy LCS diff, cached on the host). */
+  _diffHost(host, args) {
+    const diffHost = document.createElement('div');
+    diffHost.className = 'bookslm-confirm-diff';
+    if (host._diffHtml) {
+      diffHost.innerHTML = host._diffHtml;
+    } else if (!host._diffLoading) {
+      host._diffLoading = true;
+      this._fillConfirmationDiff(args, host).then(() => this._renderMessages());
+    }
+    return diffHost;
+  }
+
  async _fillConfirmationDiff(args, conf) {
    const proposed = args.content;
    if (typeof proposed !== 'string' || !args.vault || !args.path) return;
@@ -2935,22 +3045,20 @@ class BooksLM {
    if (!conf || conf._applying) return;
    conf._applying = true;

+    // BUG-075: one click applies the whole pending batch AND authorizes the
+    // remaining actions of the same run (no second confirmation card).
    const payload = {
      ...(msg.payload || {}),
      confirm: conf.pending,
      confirm_messages: conf.messages,
+      confirm_all: true,
    };

    this._isLoading = true;
    this._abortCtrl = new AbortController();
-    const sendBtn = this._panel && this._panel.querySelector('.bookslm-btn-send');
-    if (sendBtn) sendBtn.disabled = true;
+    this._syncSendButton();
+    this._setActivity('working', t('ai.activity_streaming'));

-    // BUG-046: carry the original request payload over to the continuation.
-    // When an applied tool failed and the model re-proposed a confirmation,
-    // the continuation used to have `payload: null`: the second "Appliquer"
-    // then resumed without `message` → 422 → "[object Object]" toast.
-    const continuation = { role: 'assistant', content: '', sources: [], toolCalls: [], confirmation: null, payload: msg.payload ? { ...msg.payload } : null };
    try {
      let resp = await this._postChat(payload);
      if (resp.status === 401 && AuthManager._authEnabled) {
@@ -2960,21 +3068,65 @@ class BooksLM {
      if (!resp.ok) {
        throw await this._responseError(resp);
      }
-      // The confirmation is resolved: drop the card and show the continuation.
+      // The confirmation is resolved: drop the card and keep streaming into the
+      // SAME message, so the steps block accumulates the whole exchange
+      // instead of fragmenting into a new “1 étape” message per approval
+      // (BUG-074). BUG-046 payload carry-over is inherent: `msg.payload` stays.
      msg.confirmation = null;
-      this._messages.push(continuation);
      this._renderMessages({ anchor: true });
-      await this._streamResponse(resp, continuation, payload);
+      await this._streamResponse(resp, msg, payload);
+    } catch (e) {
+      if (e.name === 'AbortError') {
+        this._markStopped(msg);
+      } else {
+        throw e;
+      }
    } finally {
      conf._applying = false;
      this._isLoading = false;
      this._abortCtrl = null;
-      if (sendBtn) sendBtn.disabled = false;
+      this._syncSendButton();
      this._renderMessages();
      this._saveHistory();
    }
  }

+  /** BUG-077 — abort the in-flight agent/chat request. */
+  _stopGeneration() {
+    if (this._abortCtrl) {
+      try {
+        this._abortCtrl.abort();
+      } catch { /* already aborted */ }
+    }
+  }
+
+  /** Append a visible « stopped by the user » marker to an assistant message. */
+  _markStopped(msg) {
+    const marker = `⏹ ${t('ai.stopped')}`;
+    const content = String(msg.content || '');
+    if (!content.includes(marker)) {
+      msg.content = content ? `${content}\n\n${marker}` : marker;
+    }
+    this._setActivity('idle');
+  }
+
+  /**
+   * BUG-077 — the composer's round button doubles as a Stop control while a
+   * response streams: a new send is already blocked by `_isLoading`, so the
+   * button switches to a stop icon instead of being disabled.
+   */
+  _syncSendButton() {
+    const btn = this._panel && this._panel.querySelector('.bookslm-btn-send');
+    if (!btn) return;
+    const loading = !!this._isLoading;
+    btn.classList.toggle('is-stopping', loading);
+    btn.title = loading ? t('ai.stop') : t('bookslm.send');
+    btn.setAttribute('aria-label', btn.title);
+    const icon = btn.querySelector('i');
+    if (icon) icon.setAttribute('data-lucide', loading ? 'square' : 'arrow-up');
+    if (typeof safeCreateIcons === 'function') safeCreateIcons();
+  }
+
  // ── Messaging ───────────────────────────────────────────────────────

  async _sendMessage() {
@@ -3053,10 +3205,8 @@ class BooksLM {
    this._isLoading = true;
    this._renderMessages({ anchor: true, instant: true });

-    const sendBtn = this._panel.querySelector('.bookslm-btn-send');
-    if (sendBtn) sendBtn.disabled = true;
-
    this._abortCtrl = new AbortController();
+    this._syncSendButton();
    this._setActivity('working', t('ai.activity_sending'));

    try {
@@ -3085,17 +3235,17 @@ class BooksLM {
      }
      this._setActivity('done', t('ai.activity_done'));
    } catch (e) {
-      if (e.name !== 'AbortError') {
+      if (e.name === 'AbortError') {
+        this._markStopped(assistantMsg);
+      } else {
        assistantMsg.content = `⚠ Error: ${e.message}`;
        console.warn('AI assistant chat error:', e);
        this._setActivity('error', t('ai.activity_error'));
-      } else {
-        this._setActivity('idle');
      }
    }

    this._isLoading = false;
-    if (sendBtn) sendBtn.disabled = false;
+    this._syncSendButton();
    this._abortCtrl = null;
    this._renderMessages();
    this._saveHistory();
@@ -3155,6 +3305,10 @@ class BooksLM {
        });
        // #93 — a vault write must be reflected in the displayed document.
        this._notifyFileWritten(data);
+        // BUG-076 — reflect tree changes (create/delete/rename…) right away.
+        if (data.ok !== false && MUTATING_TOOLS.has(data.name)) {
+          this._scheduleTreeRefresh();
+        }
        this._setActivity('working', t('ai.activity_tool', { name: data.name }));
        return;
      }
@@ -767,10 +767,15 @@ function initConfigModal() {
  openBtn.addEventListener("click", async () => {
    modal.classList.add("active");
    closeHeaderMenu();
-    // BUG-071: reset the TOC to the CSS default (mobile: hidden, desktop:
-    // visible) like the help modal does on open.
+    // BUG-071/#114: reset the TOC to the CSS default (mobile: hidden drawer,
+    // desktop: visible sidebar) like the help modal does on open. Clear the
+    // stale inline display and the drawer-open class so a previous mobile
+    // session cannot leave the nav stuck open.
    var configNavOnOpen = document.getElementById("config-nav");
    if (configNavOnOpen) configNavOnOpen.style.display = '';
+    modal.classList.remove("config-toc-open");
+    var configHamburgerOnOpen = document.getElementById("config-hamburger");
+    if (configHamburgerOnOpen) configHamburgerOnOpen.classList.remove("active");
    renderConfigFilters();
    loadConfigFields();
    loadDiagnostics();
@@ -786,6 +791,12 @@ function initConfigModal() {
  closeBtn.addEventListener("click", closeConfigModal);
  modal.addEventListener("click", (e) => {
    if (e.target === modal) {
+      // #114: a tap on the backdrop (or outside the drawer) first closes the
+      // TOC drawer; only a second tap closes the whole modal.
+      if (modal.classList.contains("config-toc-open")) {
+        _setConfigNav(false);
+        return;
+      }
      closeConfigModal();
    }
  });
@@ -890,17 +901,19 @@ function initConfigModal() {
    });
  }

-  // BUG-071: mobile table of contents. #config-nav shares the .help-nav
+  // BUG-071/#114: mobile table of contents. #config-nav shares the .help-nav
  // rule that hides it below 768px, but — unlike the help modal — the config
  // modal had no toggle to reveal it, leaving mobile users with no way to
-  // reach a section. The header hamburger opens it as a top block; picking
-  // a section smooth-scrolls inside the modal and collapses it on mobile.
+  // reach a section. The header hamburger opens it as a left slide-over
+  // drawer (backdrop via .config-toc-open on the modal); picking a section
+  // smooth-scrolls inside the modal and collapses it on mobile.
  var configNav = document.getElementById("config-nav");
  var configHamburger = document.getElementById("config-hamburger");
  function _isConfigMobile() { return window.innerWidth <= 768; }
  function _setConfigNav(open) {
    if (!configNav) return;
    configNav.style.display = open ? "flex" : "none";
+    modal.classList.toggle("config-toc-open", !!open && _isConfigMobile());
    if (configHamburger) configHamburger.classList.toggle("active", !!open);
  }
  if (configHamburger) {
@@ -910,6 +923,14 @@ function initConfigModal() {
      _setConfigNav(hidden);
    });
  }
+  // #114: close button inside the drawer header.
+  var configTocClose = document.getElementById("config-toc-close");
+  if (configTocClose) {
+    configTocClose.addEventListener("click", function(e) {
+      e.stopPropagation();
+      _setConfigNav(false);
+    });
+  }
  if (configNav) {
    configNav.querySelectorAll(".help-nav-link").forEach(function(a) {
      a.addEventListener("click", function(e) {
@@ -930,6 +951,11 @@ function initConfigModal() {

  document.addEventListener("keydown", (e) => {
    if (e.key === "Escape" && modal.classList.contains("active")) {
+      // #114: Escape closes the TOC drawer first, then the modal.
+      if (modal.classList.contains("config-toc-open")) {
+        _setConfigNav(false);
+        return;
+      }
      closeConfigModal();
    }
  });
@@ -949,7 +975,13 @@ function initConfigModal() {

 function closeConfigModal() {
  const modal = document.getElementById("config-modal");
-  if (modal) modal.classList.remove("active");
+  if (modal) {
+    modal.classList.remove("active");
+    // #114: never leave the drawer-open class (backdrop) behind.
+    modal.classList.remove("config-toc-open");
+    const nav = document.getElementById("config-nav");
+    if (nav) nav.style.display = '';
+  }
 }

 // --- Config field helpers ---
@@ -2356,6 +2388,107 @@ function initAboutModal() {
 }

 // ── Profile ──────────────────────────────────────────────────────────
+// #113 — profile picture: pick/import an image, center-crop it to a 256 px
+// square JPEG, persist it on the account (PATCH /api/auth/me) and show it in
+// the sidebar circle (#sidebar-user-avatar). Initials remain the fallback.
+const _AVATAR_MAX_FILE_BYTES = 8 * 1024 * 1024;
+const _AVATAR_TYPES = ["image/png", "image/jpeg", "image/webp"];
+const _AVATAR_SIZE = 256;
+
+function _profileInitials(name) {
+  var parts = String(name || "").trim().split(/\s+/).filter(Boolean);
+  if (!parts.length) return "?";
+  var first = parts[0][0] || "";
+  var last = parts.length > 1 ? parts[parts.length - 1][0] : "";
+  return (first + last).toUpperCase() || "?";
+}
+
+/** Center-crop the picked image to a square and export it as a JPEG data-URL. */
+function _resizeAvatarFile(file) {
+  return new Promise(function (resolve, reject) {
+    var url = URL.createObjectURL(file);
+    var img = new Image();
+    img.onload = function () {
+      URL.revokeObjectURL(url);
+      try {
+        var canvas = document.createElement("canvas");
+        canvas.width = _AVATAR_SIZE;
+        canvas.height = _AVATAR_SIZE;
+        var ctx = canvas.getContext("2d");
+        if (!ctx) throw new Error("canvas");
+        ctx.fillStyle = "#ffffff";
+        ctx.fillRect(0, 0, _AVATAR_SIZE, _AVATAR_SIZE);
+        var side = Math.min(img.naturalWidth, img.naturalHeight);
+        var sx = (img.naturalWidth - side) / 2;
+        var sy = (img.naturalHeight - side) / 2;
+        ctx.drawImage(img, sx, sy, side, side, 0, 0, _AVATAR_SIZE, _AVATAR_SIZE);
+        resolve(canvas.toDataURL("image/jpeg", 0.85));
+      } catch (err) {
+        reject(err);
+      }
+    };
+    img.onerror = function () {
+      URL.revokeObjectURL(url);
+      reject(new Error("image decode failed"));
+    };
+    img.src = url;
+  });
+}
+
+function _profileAvatarError(key) {
+  var err = document.getElementById("profile-avatar-error");
+  if (!err) return;
+  if (!key) {
+    err.textContent = "";
+    err.classList.add("hidden");
+    return;
+  }
+  err.textContent = t(key);
+  err.classList.remove("hidden");
+}
+
+/** Paint the settings preview (image or initials) for the given avatar. */
+function _renderProfileAvatar(dataUrl) {
+  var img = document.getElementById("profile-avatar-img");
+  var initialsEl = document.getElementById("profile-avatar-initials");
+  var removeBtn = document.getElementById("profile-avatar-remove");
+  if (!img || !initialsEl) return;
+  if (dataUrl) {
+    img.src = dataUrl;
+    img.hidden = false;
+    initialsEl.textContent = "";
+    if (removeBtn) removeBtn.hidden = false;
+  } else {
+    img.removeAttribute("src");
+    img.hidden = true;
+    var user = AuthManager.getUser() || {};
+    var name = localStorage.getItem("obsigate-name") || user.display_name || user.username || "";
+    initialsEl.textContent = _profileInitials(name);
+    if (removeBtn) removeBtn.hidden = true;
+  }
+}
+
+/** PATCH /api/auth/me with an avatar value (data-URL, or "" to clear). */
+async function _patchProfileAvatar(value) {
+  var headers = { "Content-Type": "application/json" };
+  var authHeaders = AuthManager.getAuthHeaders ? AuthManager.getAuthHeaders() : null;
+  if (authHeaders) headers = Object.assign(headers, authHeaders);
+  var res = await fetch("/api/auth/me", {
+    method: "PATCH",
+    headers: headers,
+    credentials: "include",
+    body: JSON.stringify({ avatar: value }),
+  });
+  if (!res.ok) {
+    var detail = "";
+    try {
+      detail = (await res.json()).detail || "";
+    } catch (e) { /* no json body */ }
+    throw new Error(detail || "HTTP " + res.status);
+  }
+  return res.json();
+}
+
 function initProfile() {
  var langSel = document.getElementById('profile-lang');
  var nameInp = document.getElementById('profile-name');
@@ -2393,4 +2526,148 @@ function initProfile() {
  });

  // Logout button — handled inline in index.html (onclick)
+
+  // ── Avatar (#113) ────────────────────────────────────────────────
+  var avatarField = document.getElementById('profile-avatar-field');
+  var avatarInput = document.getElementById('profile-avatar-input');
+  var chooseBtn = document.getElementById('profile-avatar-choose');
+  var overlayBtn = document.getElementById('profile-avatar-overlay');
+  var previewBox = document.getElementById('profile-avatar-preview');
+  var removeBtn = document.getElementById('profile-avatar-remove');
+  var presetsBox = document.getElementById('profile-avatar-presets');
+  if (!avatarField || !avatarInput || !chooseBtn) return;
+
+  // The avatar only exists on a real account — hide it when auth is off.
+  if (!AuthManager.isAuthEnabled || !AuthManager.isAuthEnabled()) {
+    avatarField.hidden = true;
+    return;
+  }
+
+  _renderProfileAvatar((AuthManager.getUser() || {}).avatar || null);
+
+  // Refresh from the server so the preview survives a page reload.
+  fetch('/api/auth/me', { credentials: 'include' })
+    .then(function (res) { return res.ok ? res.json() : null; })
+    .then(function (user) {
+      if (!user) return;
+      AuthManager.updateCachedUser(user);
+      _renderProfileAvatar(user.avatar || null);
+    })
+    .catch(function () { /* non-bloquant */ });
+
+  // ── Preset avatars (#117) ────────────────────────────────────────
+  var PRESET_STORAGE_KEY = 'obsigate-avatar-preset';
+  function markActivePreset(name) {
+    if (!presetsBox) return;
+    presetsBox.querySelectorAll('.profile-avatar-preset').forEach(function (btn) {
+      var on = !!name && btn.getAttribute('data-avatar') === name;
+      btn.classList.toggle('active', on);
+      btn.setAttribute('aria-checked', on ? 'true' : 'false');
+    });
+  }
+  function clearActivePreset() {
+    try { localStorage.removeItem(PRESET_STORAGE_KEY); } catch (e) { /* ignore */ }
+    markActivePreset(null);
+  }
+  function rememberActivePreset(name) {
+    try { localStorage.setItem(PRESET_STORAGE_KEY, name); } catch (e) { /* ignore */ }
+    markActivePreset(name);
+  }
+  var savedPreset = null;
+  try { savedPreset = localStorage.getItem(PRESET_STORAGE_KEY); } catch (e) { /* ignore */ }
+  markActivePreset(savedPreset);
+
+  if (presetsBox) {
+    presetsBox.querySelectorAll('.profile-avatar-preset').forEach(function (btn) {
+      btn.addEventListener('click', async function () {
+        var preset = btn.getAttribute('data-avatar');
+        if (!preset) return;
+        _profileAvatarError(null);
+        var all = presetsBox.querySelectorAll('.profile-avatar-preset');
+        all.forEach(function (b) { b.disabled = true; });
+        try {
+          // Load the bundled image, then reuse the upload pipeline (center-crop
+          // + 256 px JPEG) so it stores exactly like an imported picture.
+          var res = await fetch('/static/icons/avatar/' + encodeURIComponent(preset), { credentials: 'include' });
+          if (!res.ok) throw new Error('HTTP ' + res.status);
+          var blob = await res.blob();
+          var dataUrl = await _resizeAvatarFile(blob);
+          var user = await _patchProfileAvatar(dataUrl);
+          AuthManager.updateCachedUser(user);
+          _renderProfileAvatar(user.avatar || dataUrl);
+          AuthManager.renderUserSection();
+          rememberActivePreset(preset);
+          showToast(t('config.avatar_updated'), 'success');
+        } catch (err) {
+          _profileAvatarError('config.avatar_upload_failed');
+          console.error('Avatar preset failed:', err);
+        } finally {
+          all.forEach(function (b) { b.disabled = false; });
+        }
+      });
+    });
+  }
+
+  function openPicker() {
+    _profileAvatarError(null);
+    avatarInput.click();
+  }
+  chooseBtn.addEventListener('click', openPicker);
+  if (overlayBtn) overlayBtn.addEventListener('click', openPicker);
+  if (previewBox) {
+    previewBox.addEventListener('click', function (e) {
+      if (e.target.closest('button')) return;
+      openPicker();
+    });
+  }
+
+  avatarInput.addEventListener('change', async function () {
+    var file = avatarInput.files && avatarInput.files[0];
+    avatarInput.value = "";           // allow re-picking the same file
+    if (!file) return;
+    _profileAvatarError(null);
+    if (_AVATAR_TYPES.indexOf(file.type) === -1) {
+      _profileAvatarError('config.avatar_invalid_type');
+      return;
+    }
+    if (file.size > _AVATAR_MAX_FILE_BYTES) {
+      _profileAvatarError('config.avatar_too_large');
+      return;
+    }
+    chooseBtn.disabled = true;
+    try {
+      var dataUrl = await _resizeAvatarFile(file);
+      var user = await _patchProfileAvatar(dataUrl);
+      AuthManager.updateCachedUser(user);
+      _renderProfileAvatar(user.avatar || dataUrl);
+      AuthManager.renderUserSection();
+      clearActivePreset();               // an imported photo is not a preset
+      showToast(t('config.avatar_updated'), 'success');
+    } catch (err) {
+      _profileAvatarError('config.avatar_upload_failed');
+      console.error('Avatar upload failed:', err);
+    } finally {
+      chooseBtn.disabled = false;
+    }
+  });
+
+  if (removeBtn) {
+    removeBtn.addEventListener('click', async function () {
+      _profileAvatarError(null);
+      removeBtn.disabled = true;
+      try {
+        var user = await _patchProfileAvatar("");
+        AuthManager.updateCachedUser(user);
+        _renderProfileAvatar(null);
+        AuthManager.renderUserSection();
+        clearActivePreset();
+        showToast(t('config.avatar_removed'), 'success');
+      } catch (err) {
+        _profileAvatarError('config.avatar_upload_failed');
+        console.error('Avatar removal failed:', err);
+      } finally {
+        removeBtn.disabled = false;
+      }
+    });
+  }
 }
@@ -197,9 +197,13 @@ function createPaneTabManager(paneId) {
    close(tabId) {
      const idx = this._tabs.findIndex(t => t.id === tabId);
      if (idx === -1) return;
+      const closingTab = this._tabs[idx];
      this._tabs.splice(idx, 1);
      delete this._tabCache[tabId];
      this._dirtyTabs.delete(tabId);
+      if (window.NowPlaying && closingTab) {
+        window.NowPlaying.notifyTabClosed(closingTab.vault, closingTab.path);
+      }
      if (this._tabs.length === 0) {
        this._activeTabId = null;
        // If this pane has no more tabs and isn't the last pane, close it
@@ -826,6 +830,8 @@ const PaneManager = {
    grid.className = 'pane-grid';
    this._applyGridTemplate(grid, n);

+    // #110 — keep playing media alive across a pane-grid rebuild.
+    if (window.NowPlaying) window.NowPlaying.handleRender(wrapper, null);
    wrapper.innerHTML = '';
    wrapper.appendChild(grid);
    this.panes = [];
@@ -1216,6 +1222,8 @@ const PaneManager = {
    if (!grid) return;
    const wrapper = grid.parentElement;
    const pane0 = this.panes[0];
+    // #110 — keep playing media alive across a pane collapse.
+    if (window.NowPlaying) window.NowPlaying.handleRender(wrapper, null);
    wrapper.innerHTML = '';
    let tabBar = null, content = null;
    if (pane0 && pane0.element) {
@@ -598,6 +598,17 @@ function applyTheme(themeKey, mode) {
  // Notify other components of theme change
  try {
    root.setAttribute('data-theme', mode);
+    // Syntax highlighting follows the light/dark mode (BUG-078): the theme
+    // *key* is not a mode, so toggling the sheets by key used to disable both
+    // and strip every code block of its colours. Sepia/high-contrast reuse the
+    // light palette.
+    var darkSheet = document.getElementById('hljs-theme-dark');
+    var lightSheet = document.getElementById('hljs-theme-light');
+    if (darkSheet && lightSheet) {
+      var isDark = mode === 'dark';
+      darkSheet.disabled = !isDark;
+      lightSheet.disabled = isDark;
+    }
    document.dispatchEvent(new CustomEvent('themechange', { detail: { theme: themeKey, mode: mode } }));
  } catch(e) {}
 }
@@ -137,14 +137,26 @@ export const RightSidebarManager = {
 // ---------------------------------------------------------------------------
 // Theme
 // ---------------------------------------------------------------------------
+const _THEME_MODES = ["dark", "light", "high-contrast", "sepia"];
+
 export function initTheme() {
-  const saved = localStorage.getItem("obsigate-theme") || "dark";
-  applyTheme(saved);
+  // The theme engine (themes.js) owns the CSS variables and the theme *key*;
+  // the <html data-theme> attribute must carry the *mode* (dark/light/…). Read
+  // the persisted mode here so the first paint and the highlight.js stylesheet
+  // are right before the async theme init runs (BUG-078).
+  let mode = "dark";
+  try { mode = localStorage.getItem("obsigate-theme-mode") || "dark"; } catch (e) { /* ignore */ }
+  applyTheme(mode);
 }

 export function applyTheme(theme) {
-  document.documentElement.setAttribute("data-theme", theme);
-  localStorage.setItem("obsigate-theme", theme);
+  let mode = theme;
+  if (_THEME_MODES.indexOf(mode) === -1) {
+    // Callers may pass a theme key (legacy): fall back to the persisted mode.
+    try { mode = localStorage.getItem("obsigate-theme-mode") || "dark"; } catch (e) { mode = "dark"; }
+  }
+  const isDark = mode === "dark";
+  document.documentElement.setAttribute("data-theme", mode);

  // Update theme button icon and label
  const themeBtn = document.getElementById("theme-toggle");
@@ -152,23 +164,23 @@ export function applyTheme(theme) {
  if (themeBtn && themeLabel) {
    const icon = themeBtn.querySelector("i");
    if (icon) {
-      icon.setAttribute("data-lucide", theme === "dark" ? "moon" : "sun");
+      icon.setAttribute("data-lucide", isDark ? "moon" : "sun");
    }
-    themeLabel.textContent = theme === "dark" ? t('theme.dark') : t('theme.light');
+    themeLabel.textContent = isDark ? t('theme.dark') : t('theme.light');
    safeCreateIcons();
  }

-  // Swap highlight.js theme
+  // Swap highlight.js theme — keyed on the mode, not the theme key (BUG-078).
  const darkSheet = document.getElementById("hljs-theme-dark");
  const lightSheet = document.getElementById("hljs-theme-light");
  if (darkSheet && lightSheet) {
-    darkSheet.disabled = theme !== "dark";
-    lightSheet.disabled = theme !== "light";
+    darkSheet.disabled = !isDark;
+    lightSheet.disabled = isDark;
  }

  // Update Mermaid theme for newly rendered diagrams
  import('./mermaid-viewer.js').then(function(m) {
-    m.updateMermaidTheme(theme === 'dark');
+    m.updateMermaidTheme(isDark);
  }).catch(function() {});
 }

@@ -2080,11 +2092,16 @@ export const TabManager = {
    }
    const idx = this._tabs.findIndex(t => t.id === tabId);
    if (idx === -1) return;
+    const closingTab = this._tabs[idx];

    this._tabs.splice(idx, 1);
    delete this._tabCache[tabId];
    this._dirtyTabs.delete(tabId);

+    if (window.NowPlaying && closingTab) {
+      window.NowPlaying.notifyTabClosed(closingTab.vault, closingTab.path);
+    }
+
    if (this._tabs.length === 0) {
      this._activeTabId = null;
      this._showDashboard();
@@ -2207,6 +2224,8 @@ export const TabManager = {

  _showDashboard() {
    const area = document.getElementById("content-area");
+    // #110 — move any playing media to the persistent dock before wiping.
+    if (window.NowPlaying && area) window.NowPlaying.handleRender(area, null);
    // Save dashboard DOM before clearing (it may have been removed from DOM by renderFile)
    let dashboard = document.getElementById("dashboard-home");
    if (!dashboard) {
@@ -201,37 +201,39 @@ const EXT_ICONS = {
  ".tex": "file-text",
  ".latex": "file-text",

-  // Image files
-  ".png": "file-image",
-  ".jpg": "file-image",
-  ".jpeg": "file-image",
-  ".gif": "file-image",
-  ".svg": "file-image",
-  ".webp": "file-image",
-  ".bmp": "file-image",
-  ".ico": "file-image",
-  ".tiff": "file-image",
-  ".tif": "file-image",
+  // Image files (roadmap #108-D1)
+  ".png": "image",
+  ".jpg": "image",
+  ".jpeg": "image",
+  ".gif": "image",
+  ".svg": "image",
+  ".webp": "image",
+  ".bmp": "image",
+  ".ico": "image",
+  ".tiff": "image",
+  ".tif": "image",

-  // Audio files
-  ".mp3": "file-music",
-  ".wav": "file-music",
-  ".flac": "file-music",
-  ".aac": "file-music",
-  ".ogg": "file-music",
-  ".m4a": "file-music",
-  ".wma": "file-music",
+  // Audio files (roadmap #109-B2)
+  ".mp3": "audio-lines",
+  ".wav": "audio-lines",
+  ".flac": "audio-lines",
+  ".aac": "audio-lines",
+  ".ogg": "audio-lines",
+  ".oga": "audio-lines",
+  ".opus": "audio-lines",
+  ".m4a": "audio-lines",
+  ".wma": "audio-lines",

-  // Video files
-  ".mp4": "play",
-  ".avi": "play",
-  ".mov": "play",
-  ".wmv": "play",
-  ".flv": "play",
-  ".webm": "play",
-  ".mkv": "play",
-  ".m4v": "play",
-  ".3gp": "play",
+  // Video files (roadmap #109-B2)
+  ".mp4": "video",
+  ".avi": "video",
+  ".mov": "video",
+  ".wmv": "video",
+  ".flv": "video",
+  ".webm": "video",
+  ".mkv": "video",
+  ".m4v": "video",
+  ".3gp": "video",

  // Archive files
  ".zip": "file-archive",
@@ -14,6 +14,7 @@ import { openShareDialog } from './config.js';
 import { cacheViewedFile, getCachedFile } from './offline.js';
 import { t } from './i18n.js';
 import { onFileRender } from './plugins.js';
+import { NowPlaying } from './now-playing.js';

 // ── Multi-format export ────────────────────────────────────────────────────
 // Downloads a file export (HTML / MD bundle / ePub) via the authenticated
@@ -540,13 +541,584 @@ export function navigatePdfToPage(area, page) {
  iframe.src = `${base}${sep}_pdfpage=${Date.now()}#page=${page}`;
 }

+// ---------------------------------------------------------------------------
+// Image viewer (roadmap #108-D)
+// ---------------------------------------------------------------------------
+const IMAGE_EXTS = new Set([".png", ".jpg", ".jpeg", ".gif", ".svg", ".webp", ".bmp", ".ico"]);
+const IMAGE_ZOOM_MIN = 0.1;
+const IMAGE_ZOOM_MAX = 8;
+let _imageViewerCleanup = null;
+// BUG-072 — lightbox / metadata-panel state, reset as soon as a non-image file
+// is rendered. #111 — image→image navigation now happens **in place**, so the
+// viewer (and these states) is no longer destroyed between siblings.
+const _imageViewerState = { lightbox: false, meta: false };
+
+/** Clamp a zoom factor into the supported [0.1, 8] range. */
+export function clampImageZoom(value) {
+  if (!Number.isFinite(value)) return 1;
+  return Math.min(IMAGE_ZOOM_MAX, Math.max(IMAGE_ZOOM_MIN, value));
+}
+
+/** True when *p* has a viewable image extension. */
+export function isImagePath(p) {
+  const lower = (p || "").toLowerCase();
+  const dot = lower.lastIndexOf(".");
+  return dot !== -1 && IMAGE_EXTS.has(lower.slice(dot));
+}
+
+/** Build the byte-serving URL used by <img> / thumbnails. */
+export function buildImageUrl(vault, path) {
+  return `/api/image/${encodeURIComponent(vault)}?path=${encodeURIComponent(path)}`;
+}
+
+function buildThumbUrl(vault, path, size) {
+  return `/api/media/${encodeURIComponent(vault)}/thumb?path=${encodeURIComponent(path)}&size=${size}`;
+}
+
+// #111 — directory listing cache. Opening / switching to another image must not
+// hammer `/api/browse` (the filmstrip and the sibling list share one listing).
+const _imageDirCache = new Map();
+const IMAGE_DIR_CACHE_TTL = 15000;
+
+/** List the viewable image siblings of *dir*, memoised for a short TTL. */
+async function listImageSiblings(vault, dir) {
+  const key = `${vault}\u0000${dir}`;
+  const cached = _imageDirCache.get(key);
+  if (cached && Date.now() - cached.ts < IMAGE_DIR_CACHE_TTL) return cached.items;
+  const res = await api(`/api/browse/${encodeURIComponent(vault)}?path=${encodeURIComponent(dir)}`);
+  const items = (res.items || []).filter((it) => it.type === "file" && isImagePath(it.path));
+  _imageDirCache.set(key, { items, ts: Date.now() });
+  return items;
+}
+
+const IMAGE_MIME = {
+  ".png": "image/png",
+  ".jpg": "image/jpeg",
+  ".jpeg": "image/jpeg",
+  ".gif": "image/gif",
+  ".svg": "image/svg+xml",
+  ".webp": "image/webp",
+  ".bmp": "image/bmp",
+  ".ico": "image/x-icon",
+};
+
+/** Best-effort MIME type for an image path (metadata panel). */
+function imageMimeFor(path) {
+  const lower = (path || "").toLowerCase();
+  const dot = lower.lastIndexOf(".");
+  return dot === -1 ? "" : IMAGE_MIME[lower.slice(dot)] || "";
+}
+
+function formatBytes(n) {
+  if (!n && n !== 0) return "";
+  if (n < 1024) return `${n} o`;
+  if (n < 1048576) return `${(n / 1024).toFixed(1)} Ko`;
+  return `${(n / 1048576).toFixed(1)} Mo`;
+}
+
+/**
+ * Render a full image viewer: centered image, wheel zoom (0.1×–8×), drag pan,
+ * double-click reset, ←/→ navigation between siblings, thumbnail filmstrip,
+ * collapsible metadata panel and a full-viewport lightbox.
+ */
+export function renderImageViewer(area, data) {
+  const vault = data.vault;
+  // #111 — mutable current-image state: navigating swaps these in place instead
+  // of re-rendering the whole viewer (which used to refetch the file + listing).
+  let currentPath = data.path;
+  let currentTitle = data.title || (currentPath || "").split("/").pop();
+  let imgUrl = buildImageUrl(vault, currentPath);
+  let currentMeta = {
+    image_mime: data.image_mime || imageMimeFor(currentPath),
+    size_bytes: data.size_bytes,
+    modified: data.modified,
+  };
+
+  area.innerHTML = "";
+  const container = el("div", { class: "image-viewer-container", tabindex: "0" });
+
+  // ── Toolbar ────────────────────────────────────────────────────────────
+  const toolbar = el("div", { class: "image-toolbar" });
+  const titleEl = el("span", { class: "image-title", title: currentPath }, [
+    document.createTextNode(currentTitle),
+  ]);
+  toolbar.appendChild(titleEl);
+  toolbar.appendChild(el("div", { class: "image-toolbar-spacer" }));
+
+  const counter = el("span", { class: "image-counter", hidden: true }, [document.createTextNode("")]);
+  toolbar.appendChild(counter);
+  const zoomBadge = el("span", { class: "image-zoom-badge" }, [document.createTextNode("100%")]);
+  toolbar.appendChild(zoomBadge);
+
+  const mkBtn = (iconName, label, cls) => {
+    const b = el("button", { class: `btn-action${cls ? " " + cls : ""}`, type: "button", title: label, "aria-label": label }, [icon(iconName, 14)]);
+    return b;
+  };
+
+  const zoomOutBtn = mkBtn("zoom-out", t("viewer.image_zoom_out"));
+  const zoomInBtn = mkBtn("zoom-in", t("viewer.image_zoom_in"));
+  const zoomResetBtn = mkBtn("rotate-ccw", t("viewer.image_zoom_reset"));
+  const prevBtn = mkBtn("chevron-left", t("viewer.image_prev"));
+  const nextBtn = mkBtn("chevron-right", t("viewer.image_next"));
+  const originalBtn = mkBtn("external-link", t("viewer.image_open_original"));
+  const downloadBtn = mkBtn("download", t("viewer.download"));
+  const metaBtn = mkBtn("info", t("viewer.image_metadata"), "image-btn-metadata");
+  const lightboxBtn = mkBtn("maximize", t("viewer.image_fullscreen"), "image-btn-lightbox");
+  [prevBtn, nextBtn, zoomOutBtn, zoomInBtn, zoomResetBtn, metaBtn, originalBtn, downloadBtn, lightboxBtn]
+    .forEach((b) => toolbar.appendChild(b));
+  container.appendChild(toolbar);
+
+  // ── Body: image stage + metadata sidebar (right) ───────────────────────
+  const body = el("div", { class: "image-viewer-body" });
+  const stage = el("div", { class: "image-stage" });
+  const img = el("img", { class: "image-main", src: imgUrl, alt: currentTitle, draggable: "false" });
+  stage.appendChild(img);
+
+  // ── Overlay arrows along the frame edges (#111) ────────────────────────
+  const prevArrow = el("button", {
+    class: "image-nav-arrow image-nav-arrow-prev",
+    type: "button",
+    title: t("viewer.image_prev"),
+    "aria-label": t("viewer.image_prev"),
+    hidden: true,
+  }, [icon("chevron-left", 32)]);
+  const nextArrow = el("button", {
+    class: "image-nav-arrow image-nav-arrow-next",
+    type: "button",
+    title: t("viewer.image_next"),
+    "aria-label": t("viewer.image_next"),
+    hidden: true,
+  }, [icon("chevron-right", 32)]);
+  stage.appendChild(prevArrow);
+  stage.appendChild(nextArrow);
+  body.appendChild(stage);
+
+  // ── Metadata sidebar (kept open across ←/→ navigation) ─────────────────
+  const metaPanel = el("div", { class: "image-meta-panel" });
+  metaPanel.hidden = !_imageViewerState.meta;
+  body.appendChild(metaPanel);
+  container.appendChild(body);
+
+  // ── Thumbnail filmstrip (navigation) ───────────────────────────────────
+  // #112 — the film scrolls with the mouse wheel and two translucent edge
+  // arrows; the scrollable strip is wrapped so the arrows stay fixed.
+  const navWrap = el("div", { class: "image-nav", hidden: true });
+  const strip = el("div", { class: "image-nav-strip" });
+  const stripPrev = el("button", {
+    class: "image-strip-arrow image-strip-arrow-prev",
+    type: "button",
+    title: t("viewer.image_strip_prev"),
+    "aria-label": t("viewer.image_strip_prev"),
+  }, [icon("chevron-left", 20)]);
+  const stripNext = el("button", {
+    class: "image-strip-arrow image-strip-arrow-next",
+    type: "button",
+    title: t("viewer.image_strip_next"),
+    "aria-label": t("viewer.image_strip_next"),
+  }, [icon("chevron-right", 20)]);
+  navWrap.appendChild(strip);
+  navWrap.appendChild(stripPrev);
+  navWrap.appendChild(stripNext);
+  container.appendChild(navWrap);
+
+  let scale = 1;
+  let tx = 0;
+  let ty = 0;
+
+  const applyTransform = () => {
+    img.style.transform = `translate(${tx}px, ${ty}px) scale(${scale})`;
+    zoomBadge.textContent = `${Math.round(scale * 100)}%`;
+  };
+  const resetView = () => { scale = 1; tx = 0; ty = 0; applyTransform(); };
+  const setZoom = (next) => {
+    scale = clampImageZoom(next);
+    if (scale === 1) { tx = 0; ty = 0; }
+    applyTransform();
+  };
+
+  const renderMeta = () => {
+    const rows = [
+      [t("viewer.image_type"), currentMeta.image_mime || ""],
+      [t("viewer.image_dimensions"), img.naturalWidth ? `${img.naturalWidth} × ${img.naturalHeight}` : ""],
+      [t("viewer.metadata_size"), formatBytes(currentMeta.size_bytes)],
+      [t("viewer.metadata_path"), currentPath],
+    ];
+    if (currentMeta.modified) rows.push([t("viewer.metadata_modified"), currentMeta.modified]);
+    metaPanel.innerHTML = "";
+    const dl = el("dl", {});
+    rows.forEach(([k, v]) => {
+      dl.appendChild(el("dt", {}, [document.createTextNode(k)]));
+      dl.appendChild(el("dd", {}, [document.createTextNode(v || "—")]));
+    });
+    metaPanel.appendChild(dl);
+  };
+
+  // ── Sibling navigation (in place, #111) ────────────────────────────────
+  let siblings = [];
+  let currentIndex = -1;
+  let thumbs = [];
+  const preloaded = new Set();
+
+  const preload = (i) => {
+    if (!siblings.length) return;
+    const it = siblings[(i % siblings.length + siblings.length) % siblings.length];
+    if (!it || preloaded.has(it.path)) return;
+    preloaded.add(it.path);
+    const pre = new Image();
+    pre.src = buildImageUrl(vault, it.path);
+  };
+
+  const updateStripActive = () => {
+    thumbs.forEach((thumb, i) => thumb.classList.toggle("active", i === currentIndex));
+    const active = thumbs[currentIndex];
+    if (!active) return;
+    // Scroll the filmstrip only (never the document) to reveal the active thumb.
+    const left = active.offsetLeft;
+    const right = left + active.offsetWidth;
+    if (left < strip.scrollLeft) strip.scrollLeft = Math.max(0, left - 8);
+    else if (right > strip.scrollLeft + strip.clientWidth) strip.scrollLeft = right - strip.clientWidth + 8;
+  };
+
+  const updateArrows = () => {
+    const multi = siblings.length > 1;
+    prevArrow.hidden = nextArrow.hidden = prevBtn.disabled = nextBtn.disabled = !multi;
+    prevArrow.disabled = nextArrow.disabled = !multi;
+    counter.hidden = !multi;
+    counter.textContent = multi ? `${currentIndex + 1} / ${siblings.length}` : "";
+  };
+
+  /** Swap to the sibling at *index* without rebuilding the viewer. */
+  const showSibling = (index) => {
+    const item = siblings[index];
+    if (!item || item.path === currentPath) return;
+    currentIndex = index;
+    currentPath = item.path;
+    currentTitle = item.name;
+    imgUrl = buildImageUrl(vault, currentPath);
+    currentMeta = {
+      image_mime: imageMimeFor(currentPath),
+      size_bytes: item.size,
+      modified: null,
+    };
+    scale = 1; tx = 0; ty = 0;
+    applyTransform();
+    img.style.display = "";
+    const errEl = stage.querySelector(".image-error");
+    if (errEl) errEl.remove();
+    img.alt = currentTitle;
+    img.src = imgUrl;
+    titleEl.textContent = currentTitle;
+    titleEl.title = currentPath;
+    updateStripActive();
+    updateArrows();
+    state.currentVault = vault;
+    state.currentPath = currentPath;
+    try { syncActiveFileTreeItem(vault, currentPath); } catch (_) { /* best-effort */ }
+    preload(index - 1);
+    preload(index + 1);
+    if (!metaPanel.hidden) renderMeta();
+  };
+
+  const go = (delta) => {
+    if (siblings.length < 2 || currentIndex < 0) return;
+    showSibling((currentIndex + delta + siblings.length) % siblings.length);
+  };
+
+  const renderStrip = () => {
+    if (siblings.length < 2) { navWrap.hidden = true; return; }
+    navWrap.hidden = false;
+    strip.innerHTML = "";
+    thumbs = siblings.map((s, i) => {
+      const thumb = el("img", {
+        class: `image-thumb${i === currentIndex ? " active" : ""}`,
+        src: buildThumbUrl(vault, s.path, 96),
+        alt: s.name,
+        title: s.name,
+        loading: "lazy",
+        decoding: "async",
+      });
+      thumb.addEventListener("click", () => showSibling(i));
+      strip.appendChild(thumb);
+      return thumb;
+    });
+    updateStripActive();
+  };
+
+  // #112 — scroll the film with the wheel (vertical → horizontal) and the
+  // two overlay arrows; the active image never changes, only the strip view.
+  const scrollStrip = (dir) => {
+    strip.scrollBy({ left: dir * Math.max(140, strip.clientWidth * 0.8), behavior: "smooth" });
+  };
+  stripPrev.addEventListener("click", () => scrollStrip(-1));
+  stripNext.addEventListener("click", () => scrollStrip(1));
+  strip.addEventListener("wheel", (e) => {
+    if (strip.scrollWidth <= strip.clientWidth) return;
+    const delta = Math.abs(e.deltaY) > Math.abs(e.deltaX) ? e.deltaY : e.deltaX;
+    strip.scrollLeft += delta;
+    e.preventDefault();
+  }, { passive: false });
+
+  (async () => {
+    try {
+      const dir = currentPath.includes("/") ? currentPath.slice(0, currentPath.lastIndexOf("/")) : "";
+      siblings = await listImageSiblings(vault, dir);
+      currentIndex = siblings.findIndex((it) => it.path === currentPath);
+      renderStrip();
+      updateArrows();
+      preload(currentIndex - 1);
+      preload(currentIndex + 1);
+    } catch (_) { /* navigation is best-effort */ }
+  })();
+
+  // ── Interactions ───────────────────────────────────────────────────────
+  stage.addEventListener("wheel", (e) => {
+    e.preventDefault();
+    const factor = e.deltaY < 0 ? 1.15 : 1 / 1.15;
+    setZoom(scale * factor);
+  }, { passive: false });
+
+  const isArrow = (e) => !!(e.target && e.target.closest && e.target.closest(".image-nav-arrow"));
+
+  let dragging = false;
+  let startX = 0;
+  let startY = 0;
+  let startTx = 0;
+  let startTy = 0;
+  stage.addEventListener("pointerdown", (e) => {
+    if (e.button !== 0 || isArrow(e)) return;
+    dragging = true;
+    startX = e.clientX; startY = e.clientY; startTx = tx; startTy = ty;
+    stage.classList.add("panning");
+    if (stage.setPointerCapture) stage.setPointerCapture(e.pointerId);
+  });
+  stage.addEventListener("pointermove", (e) => {
+    if (!dragging) return;
+    tx = startTx + (e.clientX - startX);
+    ty = startTy + (e.clientY - startY);
+    applyTransform();
+  });
+  const endDrag = (e) => {
+    dragging = false;
+    stage.classList.remove("panning");
+    if (stage.releasePointerCapture && e.pointerId != null) {
+      try { stage.releasePointerCapture(e.pointerId); } catch (_) { /* already released */ }
+    }
+  };
+  stage.addEventListener("pointerup", endDrag);
+  stage.addEventListener("pointercancel", endDrag);
+  stage.addEventListener("dblclick", (e) => { if (!isArrow(e)) resetView(); });
+
+  const stopArrowPointer = (e) => e.stopPropagation();
+  prevArrow.addEventListener("pointerdown", stopArrowPointer);
+  nextArrow.addEventListener("pointerdown", stopArrowPointer);
+  prevArrow.addEventListener("dblclick", stopArrowPointer);
+  nextArrow.addEventListener("dblclick", stopArrowPointer);
+  prevArrow.addEventListener("click", (e) => { e.stopPropagation(); go(-1); });
+  nextArrow.addEventListener("click", (e) => { e.stopPropagation(); go(1); });
+
+  zoomInBtn.addEventListener("click", () => setZoom(scale * 1.25));
+  zoomOutBtn.addEventListener("click", () => setZoom(scale / 1.25));
+  zoomResetBtn.addEventListener("click", resetView);
+  prevBtn.addEventListener("click", () => go(-1));
+  nextBtn.addEventListener("click", () => go(1));
+  originalBtn.addEventListener("click", () => window.open(imgUrl, "_blank"));
+  downloadBtn.addEventListener("click", () => {
+    const dlUrl = `/api/file/${encodeURIComponent(vault)}/download?path=${encodeURIComponent(currentPath)}`;
+    window.open(dlUrl, "_blank");
+  });
+  metaBtn.setAttribute("aria-pressed", _imageViewerState.meta ? "true" : "false");
+  metaBtn.addEventListener("click", () => {
+    _imageViewerState.meta = !_imageViewerState.meta;
+    metaPanel.hidden = !_imageViewerState.meta;
+    metaBtn.setAttribute("aria-pressed", _imageViewerState.meta ? "true" : "false");
+    if (_imageViewerState.meta) renderMeta();
+  });
+  const syncLightbox = () => {
+    container.classList.toggle("lightbox", _imageViewerState.lightbox);
+    lightboxBtn.setAttribute("aria-pressed", _imageViewerState.lightbox ? "true" : "false");
+  };
+  syncLightbox();
+  lightboxBtn.addEventListener("click", () => {
+    _imageViewerState.lightbox = !_imageViewerState.lightbox;
+    syncLightbox();
+  });
+
+  img.addEventListener("load", () => {
+    img.style.display = "";
+    const errEl = stage.querySelector(".image-error");
+    if (errEl) errEl.remove();
+    if (!metaPanel.hidden) renderMeta();
+  });
+  img.addEventListener("error", () => {
+    img.style.display = "none";
+    if (!stage.querySelector(".image-error")) {
+      stage.appendChild(el("div", { class: "image-error" }, [document.createTextNode(t("viewer.image_error"))]));
+    }
+  });
+
+  const onKey = (e) => {
+    if (e.key === "ArrowLeft") { e.preventDefault(); go(-1); }
+    else if (e.key === "ArrowRight") { e.preventDefault(); go(1); }
+    else if (e.key === "+" || e.key === "=") { e.preventDefault(); setZoom(scale * 1.25); }
+    else if (e.key === "-") { e.preventDefault(); setZoom(scale / 1.25); }
+    else if (e.key === "0") { e.preventDefault(); resetView(); }
+    else if (e.key === "Escape") {
+      _imageViewerState.lightbox = false;
+      syncLightbox();
+    }
+  };
+  document.addEventListener("keydown", onKey);
+  _imageViewerCleanup = () => document.removeEventListener("keydown", onKey);
+
+  area.appendChild(container);
+  safeCreateIcons();
+  applyTransform();
+  if (_imageViewerState.meta) renderMeta();
+  try { container.focus({ preventScroll: true }); } catch (_) { /* non-fatal */ }
+}
+
+// #110 — Audio/video are handled by the global Now Playing controller
+// (frontend/js/now-playing.js): a single shared media element is teleported
+// between this inline view and a body-level dock, so playback survives tab,
+// pane and page navigation. The inline branches below just hand over the
+// surface; the legacy "stop on re-render" cleanup no longer applies.
+export { formatMediaDuration, buildMediaUrl, renderFallback as renderMediaFallback } from "./now-playing.js";
+
+/** Audio viewer (roadmap #109-B, made persistent by #110). */
+export function renderAudioViewer(area, data) {
+  NowPlaying.attachInline(area, data);
+}
+
+/** Video viewer (roadmap #109-C, made persistent by #110). */
+export function renderVideoViewer(area, data) {
+  NowPlaying.attachInline(area, data);
+}
+
+
+// ── Excel .xlsx — sheet tabs + editable cells ─────────────────────────────
+// Cells are contenteditable; edits are collected per sheet and sent to
+// PUT /api/file/{vault}/xlsx/save. Formula cells show their text and are
+// saved back as formulas (no client-side recalculation — ceiling accepted).
+function renderXlsxViewer(area, data) {
+  const sheets = data.xlsx_sheets || [];
+  const tabs = sheets.length > 1
+    ? `<div class="xlsx-tabs">${sheets.map((s, i) =>
+        `<button class="xlsx-tab${i === 0 ? " active" : ""}" data-sheet="${i}">${escapeHtml(s.name)}</button>`
+      ).join("")}</div>`
+    : "";
+  const panels = sheets.map((s, i) =>
+    `<div class="xlsx-panel" data-sheet="${i}"${i === 0 ? "" : ' style="display:none"'}>${s.html}</div>`
+  ).join("");
+
+  area.innerHTML = `
+    <div class="xlsx-viewer">
+      <div class="xlsx-toolbar">
+        ${tabs}
+        <span class="xlsx-toolbar-actions">
+          <button class="btn-action" id="xlsx-save-btn" disabled>${t("common.save")}</button>
+          <button class="btn-action" id="xlsx-download-btn">
+            <i data-lucide="download" style="width:14px;height:14px"></i> ${t("viewer.download")}
+          </button>
+        </span>
+      </div>
+      <div class="xlsx-panels">${panels}</div>
+    </div>`;
+
+  const saveBtn = area.querySelector("#xlsx-save-btn");
+  const panelEls = [...area.querySelectorAll(".xlsx-panel")];
+  const dirtyCount = () => area.querySelectorAll("td.xlsx-dirty").length;
+  const refreshSaveState = () => { saveBtn.disabled = dirtyCount() === 0; };
+
+  // Editable cells: Enter blurs, Escape reverts, paste stays single-line.
+  area.querySelectorAll(".xlsx-table td").forEach((td) => {
+    td.contentEditable = "true";
+    td.spellcheck = false;
+    td.dataset.orig = td.textContent;
+    td.addEventListener("input", () => {
+      td.classList.add("xlsx-dirty");
+      refreshSaveState();
+    });
+    td.addEventListener("keydown", (e) => {
+      if (e.key === "Enter") { e.preventDefault(); td.blur(); }
+      if (e.key === "Escape") {
+        td.textContent = td.dataset.orig;
+        td.classList.remove("xlsx-dirty");
+        refreshSaveState();
+      }
+    });
+    td.addEventListener("paste", (e) => {
+      e.preventDefault();
+      const text = (e.clipboardData || window.clipboardData).getData("text").replace(/\r?\n/g, " ");
+      document.execCommand("insertText", false, text);
+    });
+  });
+
+  area.querySelectorAll(".xlsx-tab").forEach((tab) => {
+    tab.addEventListener("click", () => {
+      const idx = tab.dataset.sheet;
+      area.querySelectorAll(".xlsx-tab").forEach((x) => x.classList.toggle("active", x === tab));
+      panelEls.forEach((p) => { p.style.display = p.dataset.sheet === idx ? "" : "none"; });
+    });
+  });
+
+  saveBtn.addEventListener("click", async () => {
+    // One PUT per sheet (dirty cells can span tabs before a save).
+    const jobs = panelEls
+      .map((panel) => {
+        const cells = {};
+        panel.querySelectorAll("td.xlsx-dirty").forEach((td) => { cells[td.dataset.cell] = td.textContent; });
+        return { sheet: sheets[Number(panel.dataset.sheet)].name, cells };
+      })
+      .filter((job) => Object.keys(job.cells).length);
+    if (!jobs.length) return;
+    saveBtn.disabled = true;
+    try {
+      for (const job of jobs) {
+        await api(`/api/file/${encodeURIComponent(data.vault)}/xlsx/save?path=${encodeURIComponent(data.path)}`, {
+          method: "PUT",
+          headers: { "Content-Type": "application/json" },
+          body: JSON.stringify(job),
+        });
+      }
+      area.querySelectorAll("td.xlsx-dirty").forEach((td) => {
+        td.classList.remove("xlsx-dirty");
+        td.dataset.orig = td.textContent;
+      });
+      refreshSaveState();
+      showToast(t("editor.saved"), "success");
+    } catch (err) {
+      refreshSaveState();
+      showToast(`${t("editor.save_error")}: ${err.message || err}`, "error");
+    }
+  });
+
+  area.querySelector("#xlsx-download-btn").addEventListener("click", () => {
+    window.open(`/api/file/${encodeURIComponent(data.vault)}/download?path=${encodeURIComponent(data.path)}`, "_blank");
+  });
+
+  safeCreateIcons();
+}
+
 export function renderFile(data) {
  // #93 — An inline edition session (#editor-container mounted in the content
  // area) is destroyed by this very re-render: release it first so the editor
  // state (CodeMirror view, Forge iframe, Yjs session) is torn down cleanly
  // instead of being wiped mid-session by a tab switch / sidebar click.
  if (isInlineEditorActive()) detachInlineEditor();
+  // #108 — release the image viewer's document-level shortcuts before swapping
+  // the content area (otherwise they leak on every re-render).
+  if (_imageViewerCleanup) { _imageViewerCleanup(); _imageViewerCleanup = null; }
+  // BUG-072 / #111 — any render that is not an image viewer starts from a clean
+  // viewer. Image→image navigation now happens in place (see renderImageViewer),
+  // so the viewer is never rebuilt between siblings.
+  if (!data.is_image) {
+    _imageViewerState.lightbox = false;
+    _imageViewerState.meta = false;
+  }
  const area = getContentArea();
+  // #110 — if this render is about to replace the surface that currently hosts
+  // the shared media element, hand it back to the persistent dock first.
+  NowPlaying.handleRender(area, data);

  // Handle PDF files — render in iframe with TOC sidebar
  if (data.is_pdf) {
@@ -590,31 +1162,31 @@ export function renderFile(data) {
    return;
  }

+  // Handle Excel .xlsx — editable table view (display / edit / download)
+  if (data.is_xlsx) {
+    renderXlsxViewer(area, data);
+    return;
+  }
+
  // Handle Excalidraw — render in iframe editor
  if (data.is_excalidraw) {
    renderExcalidraw(area, data, data.vault, data.path);
    return;
  }

-  // Handle images
+  // Handle images — dedicated zoom/pan viewer (roadmap #108-D)
  if (data.is_image) {
-    const imgUrl = `/api/file/${encodeURIComponent(data.vault)}/raw?path=${encodeURIComponent(data.path)}`;
-    area.innerHTML = `
-      <div class="image-viewer-container">
-        <div class="file-toolbar">
-          <span class="file-info">${escapeHtml(data.title)}</span>
-          <button class="btn-action" onclick="window.open('${imgUrl}', '_blank')">
-            <i data-lucide="maximize" style="width:14px;height:14px"></i> Plein écran
-          </button>
-          <button class="btn-action" onclick="window.open('/api/file/${encodeURIComponent(data.vault)}/download?path=${encodeURIComponent(data.path)}', '_blank')">
-            <i data-lucide="download" style="width:14px;height:14px"></i> Télécharger
-          </button>
-        </div>
-        <div class="image-viewer-body">
-          ${data.html}
-        </div>
-      </div>`;
-    lucide.createIcons();
+    renderImageViewer(area, data);
+    return;
+  }
+
+  // Handle audio / video — native HTML5 players (roadmap #109)
+  if (data.is_audio) {
+    renderAudioViewer(area, data);
+    return;
+  }
+  if (data.is_video) {
+    renderVideoViewer(area, data);
    return;
  }

@@ -629,7 +1201,7 @@ export function renderFile(data) {
      <div class="unsupported-file">
        <i data-lucide="file" style="width:48px;height:48px"></i>
        <div class="filename">${escapeHtml(data.path.split("/").pop())}</div>
-        <div>Ce fichier est binaire et ne peut pas être affiché.</div>
+        <div>${data.media_too_large ? escapeHtml(t("viewer.media_too_large")) : "Ce fichier est binaire et ne peut pas être affiché."}</div>
        ${sizeStr ? `<div style="font-size:0.85rem;margin-top:4px">Taille : ${sizeStr}</div>` : ""}
        <button class="btn-action" id="unsupported-download-btn">
          <i data-lucide="download" style="width:14px;height:14px"></i> Télécharger
@@ -956,7 +1528,12 @@ export function renderFile(data) {
  // Assemble
  area.innerHTML = "";
  area.appendChild(breadcrumb);
-  area.appendChild(el("div", { class: "file-header" }, [el("div", { class: "file-title" }, [document.createTextNode(data.title)]), tagsDiv, el("div", { class: "file-actions" }, fileActions)]));
+  area.appendChild(el("div", { class: "file-header" }, [el("div", { class: "file-title" }, [document.createTextNode(data.title)]), tagsDiv]));
+  // #115 — the action bar is a direct child of the scroll container (wrapped in
+  // `.file-toolbar`) so it can stay pinned while long documents scroll; nested
+  // inside `.file-header` it would stop sticking as soon as the header left the
+  // viewport.
+  area.appendChild(el("div", { class: "file-toolbar" }, [el("div", { class: "file-actions" }, fileActions)]));
  if (fmSection) area.appendChild(fmSection);
  area.appendChild(mdDiv);
  area.appendChild(rawDiv);
@@ -1294,6 +1871,8 @@ export function showWelcome() {

  // Restore or rebuild the dashboard with tabbed sections
  const area = getContentArea();
+  // #110 — keep playing media alive if the dashboard replaces its surface.
+  NowPlaying.handleRender(area, null);
  const home = document.getElementById("dashboard-home");

  if (area && !home) {
@@ -80,12 +80,16 @@
  "admin.users_title": "User management",
  "ai.action_applied": "Applied ✓",
  "ai.action_apply": "Apply",
+  "ai.action_apply_all": "Approve all ({count})",
  "ai.action_applying": "Applying…",
  "ai.action_create_dir": "Create folder {path}",
  "ai.action_create_file": "Create file {path}",
  "ai.action_created_dir": "Folder created: {path}",
  "ai.action_created_file": "File created: {path}",
  "ai.action_failed": "Action failed: {error}",
+  "ai.confirm_actions": "{count} actions to approve",
+  "ai.stop": "Stop the assistant",
+  "ai.stopped": "Run stopped.",
  "ai.agent_mode_off": "Agent mode off (read/search + actions)",
  "ai.agent_mode_on": "Agent mode on (read/search tools + actions)",
  "ai.casual": "Casual tone",
@@ -380,6 +384,16 @@
  "config.delete_key": "Delete",
  "config.delete_key_confirm": "Delete key",
  "config.key_deleted": "Key deleted:",
+  "config.avatar_label": "Profile picture",
+  "config.avatar_hint": "PNG, JPG or WEBP — square image cropped and resized to 256 px. Shown in the sidebar.",
+  "config.avatar_presets_label": "Or pick a preset avatar",
+  "config.avatar_choose": "Choose an image",
+  "config.avatar_remove": "Remove picture",
+  "config.avatar_updated": "Profile picture updated",
+  "config.avatar_removed": "Profile picture removed",
+  "config.avatar_too_large": "Image too large (8 MB max)",
+  "config.avatar_invalid_type": "Unsupported format — use PNG, JPG or WEBP",
+  "config.avatar_upload_failed": "Failed to save the profile picture",
  "config.backups": "Backups",
  "config.backups_desc": "Manage automatic file backups.",
  "config.client_config": "Client config",
@@ -569,6 +583,7 @@
  "config.test": "Test",
  "config.timeout_label": "Search timeout (ms)",
  "config.title": "Settings",
+  "config.toc_close": "Close contents",
  "config.toc_toggle": "Show contents",
  "config.title_boost": "Title boost",
  "config.title_boost_hint": "Relevance multiplier for title matches",
@@ -777,6 +792,7 @@
  "header.menu_theme": "Theme",
  "header.menu_theme_light": "Light",
  "header.menu_toggle": "Menu",
+  "header.menu_version": "Version",
  "header.profile": "Profile",
  "header.quick_help": "Quick Help",
  "header.refresh": "Refresh",
@@ -1106,7 +1122,7 @@
  "help.desc_markdown_all": ": Full markdown rendering",
  "help.desc_md_render": "Markdown files are rendered with:",
  "help.desc_menu_header": ": \"Vault\" dropdown in the Options menu",
-  "help.desc_menu_options": ": Access to settings, theme, help",
+  "help.desc_menu_options": ": Access to settings, theme, help and version",
  "help.desc_op_ext": ": Filter by file type",
  "help.desc_op_path": ": Filter by path",
  "help.desc_op_phrase": ": Exact phrase search",
@@ -1309,6 +1325,8 @@
  "help.sidebar_filtering": "Sidebar filtering",
  "help.sidebar_section": "Sidebar",
  "help.sidebar_tabs": "The sidebar has two tabs:",
+  "help.sidebar_user": "Account",
+  "help.desc_sidebar_user": ": Avatar, name, role and sign-out at the bottom of the sidebar",
  "help.sidebar_toggle_btn": "Sidebar toggle button",
  "help.simple": "Simple",
  "help.simple_search": "Simple search",
@@ -1339,6 +1357,7 @@
  "help.assistant_links": "Cited files and paths are links: a bare filename copies the name to the clipboard, a folder is revealed in the tree, and a file path opens it in the viewer.",
  "help.assistant_sessions": "The header history icon lists past sessions (reopen or delete); “+” starts a new conversation.",
  "help.assistant_agent": "The \"agent mode\" button enables tools (read, list, search); modifying actions require confirmation with a change preview.",
+  "help.assistant_agent_run": "Actions appear in the thread: the assistant groups modifications into a single approval (\"Approve all\") and refreshes the file tree and the open document as soon as they are applied. The send button becomes \"Stop\" to interrupt the run at any time.",
  "help.assistant_resize": "The left edge of the panel is resizable; the width is remembered.",
  "help.assistant_at": "Type @ to attach a file or directory to the context, or to attach an image from a directory.",
  "help.assistant_slash": "Type / to run a skill (research, summary, correction, plan…) or an admin command (/help, /providers, /model, /keys).",
@@ -1619,25 +1638,21 @@
  "search.whole_word": "Whole word",
  "settings.about": "📦 About",
  "settings.ai": "🤖 AI",
-  "settings.backend": "⚙️ Backend",
-  "settings.backend_hint": "These settings are saved on the server. Some require a restart or reindexing.",
  "settings.backend_section": "Backend Settings",
  "settings.client_label": "These settings apply immediately on the client side.",
  "settings.diagnostics": "🩺 Diagnostics",
+  "settings.explorer": "Files",
  "settings.history_count_desc": "Between 5 and 100 files (saved on server)",
  "settings.history_count_label": "Files in history",
  "settings.history_section": "Recent History",
  "settings.no_restart_badge": "No restart needed",
  "settings.profile": "👤 Profile",
  "settings.reindex": "Force reindex",
-  "settings.restart_badge": "Restart required",
-  "settings.save": "Save",
  "settings.search": "Search",
-  "settings.tabs": "Tabs",
  "settings.search_placeholder": "Search...",
  "settings.sync": "🔄 Sync",
+  "settings.tabs": "Tabs",
  "settings.themes": "🎨 Themes",
-  "settings.plugins": "🧩 Plugins",
  "share.copied": "Link copied!",
  "share.copy_link": "Copy link",
  "share.create": "Create share link",
@@ -1682,6 +1697,8 @@
  "sidebar.tab_saved": "Searches",
  "sidebar.tab_tags": "Tags",
  "sidebar.tab_vaults": "Vaults",
+  "sidebar.user_role_admin": "Administrator",
+  "sidebar.user_role_user": "User",
  "sidebar.vault_context_all": "All vaults",
  "sidebar.vault_specific": "Specific vault",
  "sync.autocomplete": "Autocomplete",
@@ -1823,11 +1840,26 @@
  "viewer.export_title": "Export document",
  "viewer.forge_brand": "Forge",
  "viewer.forge_title": "Forge (new editor)",
+  "viewer.image_dimensions": "Dimensions",
+  "viewer.image_error": "Unable to load the image",
+  "viewer.image_fullscreen": "Full screen (lightbox)",
+  "viewer.image_metadata": "Metadata",
+  "viewer.image_next": "Next image",
+  "viewer.image_open_original": "Open original",
+  "viewer.image_prev": "Previous image",
+  "viewer.image_strip_next": "Scroll thumbnails right",
+  "viewer.image_strip_prev": "Scroll thumbnails left",
+  "viewer.image_type": "Type",
+  "viewer.image_zoom_in": "Zoom in",
+  "viewer.image_zoom_out": "Zoom out",
+  "viewer.image_zoom_reset": "Reset zoom",
  "viewer.index_start": "Starting index...",
  "viewer.index_updated": "Updated",
  "viewer.loaded_from_cache": "File loaded from offline cache",
  "viewer.loading": "Loading file...",
  "viewer.markdown": "Markdown",
+  "viewer.media_too_large": "File too large for inline playback. Download it to watch.",
+  "viewer.media_unsupported": "This format cannot be played in your browser.",
  "viewer.metadata_created": "Created",
  "viewer.metadata_modified": "Modified",
  "viewer.metadata_path": "Path",
@@ -2015,6 +2047,23 @@
  "mfa.webauthn_btn": "Verify with my key",
  "mfa.webauthn_cancelled": "WebAuthn ceremony cancelled.",
  "mfa.webauthn_no_key": "No security key registered for this account.",
+  "player.now_playing": "Now playing",
+  "player.play": "Play",
+  "player.pause": "Pause",
+  "player.previous": "Previous",
+  "player.next": "Next",
+  "player.seek": "Seek",
+  "player.volume": "Volume",
+  "player.speed": "Playback speed",
+  "player.expand": "Expand player",
+  "player.minimize": "Minimize player",
+  "player.close": "Stop and close player",
+  "player.continues": "Playback continues — use the player to stop it.",
+  "player.reopen_tab": "Return to media",
+  "player.pip": "Picture in picture",
+  "player.move": "Move",
+  "player.resize": "Resize",
+  "player.resume": "Resuming last playback",
  "plugins.title": "🧩 Plugins",
  "plugins.description": "Extend ObsiGate with custom renderers, search filters, and editor actions.",
  "plugins.install": "Install Plugin",
@@ -2116,7 +2165,7 @@
    "guide105.lib_h3_conflicts": "Sync conflicts",
    "guide105.lib_conflicts": "If you sync the vault with Syncthing, ObsiGate detects conflict files (\"sync-conflict\" copies) and offers to compare then resolve them from a dedicated page in the Options menu.",
    "guide105.lib_h3_attach": "Attachments & media",
-    "guide105.lib_attach": "Inline <code>![[image.png]]</code> images, attachments and media (audio, video, embedded PDFs) are rendered in the viewer and indexed for search; the \"Rescan attachments\" button in Configuration rebuilds the attachment index.",
+    "guide105.lib_attach": "Inline <code>![[image.png]]</code> images, attachments and media (audio, video, embedded PDFs) are rendered in the viewer and indexed for search. Images also appear in the file tree and open in a dedicated viewer (wheel zoom, pan, smooth navigation between images in the folder — image resized to the frame, hover side arrows, persistent thumbnail filmstrip —, metadata, lightbox); audio (.mp3, .wav, .flac…) and video (.mp4, .webm…) files open in a built-in HTML5 player (play, seek, speed, fullscreen), falling back to download when the format is not playable in the browser; playback continues while you navigate thanks to a floating mini-player (audio) or a mini video window, letting you return to the media or stop it at any time. The \"Rescan attachments\" button in Configuration rebuilds the attachment index.",
    "guide105.off_pwa": "ObsiGate is a PWA: install it (install icon in the address bar) to open it like an app. The service worker caches the UI and your recently viewed documents.",
    "guide105.off_edit": "Offline you can read cached documents and even edit them: changes are queued in IndexedDB.",
    "guide105.off_sync": "When back online the queue replays automatically (sync badge in the header). If the server version diverged meanwhile, the file is flagged as conflict and the server copy is kept as a backup.",
@@ -80,12 +80,16 @@
  "admin.users_title": "Gestion utilisateurs",
  "ai.action_applied": "Appliqué ✓",
  "ai.action_apply": "Appliquer",
+  "ai.action_apply_all": "Tout approuver ({count})",
  "ai.action_applying": "Application…",
  "ai.action_create_dir": "Créer le dossier {path}",
  "ai.action_create_file": "Créer le fichier {path}",
  "ai.action_created_dir": "Dossier créé : {path}",
  "ai.action_created_file": "Fichier créé : {path}",
  "ai.action_failed": "Échec de l'action : {error}",
+  "ai.confirm_actions": "{count} actions à approuver",
+  "ai.stop": "Arrêter l'assistant",
+  "ai.stopped": "Exécution arrêtée.",
  "ai.agent_mode_off": "Mode agent désactivé (lecture/recherche + actions)",
  "ai.agent_mode_on": "Mode agent activé (outils de lecture/recherche + actions)",
  "ai.casual": "Ton décontracté",
@@ -380,6 +384,16 @@
  "config.delete_key": "Supprimer",
  "config.delete_key_confirm": "Supprimer la clé",
  "config.key_deleted": "Clé supprimée :",
+  "config.avatar_label": "Photo de profil",
+  "config.avatar_hint": "PNG, JPG ou WEBP — image carrée recadrée et réduite à 256 px. Apparaît dans la barre latérale.",
+  "config.avatar_presets_label": "Ou choisissez un avatar prédéfini",
+  "config.avatar_choose": "Choisir une image",
+  "config.avatar_remove": "Supprimer la photo",
+  "config.avatar_updated": "Photo de profil mise à jour",
+  "config.avatar_removed": "Photo de profil supprimée",
+  "config.avatar_too_large": "Image trop lourde (8 Mo maximum)",
+  "config.avatar_invalid_type": "Format non pris en charge — utilisez PNG, JPG ou WEBP",
+  "config.avatar_upload_failed": "Échec de l'enregistrement de la photo de profil",
  "config.backups": "Sauvegardes",
  "config.backups_desc": "Gérez les sauvegardes automatiques de vos fichiers.",
  "config.client_config": "Configuration client",
@@ -569,6 +583,7 @@
  "config.test": "Tester",
  "config.timeout_label": "Timeout recherche (ms)",
  "config.title": "Configuration",
+  "config.toc_close": "Fermer le sommaire",
  "config.toc_toggle": "Afficher le sommaire",
  "config.title_boost": "Boost titre",
  "config.title_boost_hint": "Multiplicateur de pertinence pour les correspondances dans le titre",
@@ -777,6 +792,7 @@
  "header.menu_theme": "Thème",
  "header.menu_theme_light": "Clair",
  "header.menu_toggle": "Menu",
+  "header.menu_version": "Version",
  "header.profile": "Profil",
  "header.quick_help": "Raccourcis & Astuces",
  "header.refresh": "Rafraîchir",
@@ -1106,7 +1122,7 @@
  "help.desc_markdown_all": ":\n                                    Rendu complet du markdown",
  "help.desc_md_render": "Les fichiers markdown sont rendus avec :",
  "help.desc_menu_header": ": Dropdown \"Vault\" dans le menu Options",
-  "help.desc_menu_options": ": Accès aux\n                                    paramètres, thème, aide",
+  "help.desc_menu_options": ": Accès aux\n                                    paramètres, thème, aide et version",
  "help.desc_op_ext": ": Filtrer par type de fichier",
  "help.desc_op_path": ": Filtrer par chemin",
  "help.desc_op_phrase": ": Recherche de phrase entre guillemets",
@@ -1309,6 +1325,8 @@
  "help.sidebar_filtering": "Filtrage de la sidebar",
  "help.sidebar_section": "Sidebar (barre latérale)",
  "help.sidebar_tabs": "La sidebar est divisée en deux onglets :",
+  "help.sidebar_user": "Compte",
+  "help.desc_sidebar_user": ": Avatar, nom, rôle et déconnexion en bas de la sidebar",
  "help.sidebar_toggle_btn": "Bouton toggle sidebar",
  "help.simple": "Simple",
  "help.simple_search": "Recherche simple",
@@ -1339,6 +1357,7 @@
  "help.assistant_links": "Les fichiers et chemins cités sont des liens : un simple nom de fichier copie le nom dans le presse-papiers, un dossier est révélé dans l'arborescence, et un chemin de fichier l'ouvre dans le viewer.",
  "help.assistant_sessions": "L'icône historique de l'en-tête liste les sessions passées (recharger ou supprimer) ; « + » démarre une nouvelle conversation.",
  "help.assistant_agent": "Le bouton « mode agent » active les outils (lire, lister, chercher) ; les actions de modification demandent une confirmation avec aperçu des changements.",
+  "help.assistant_agent_run": "Les actions s'affichent dans le fil : l'assistant regroupe les modifications en une seule approbation (« Tout approuver ») et met à jour l'arborescence et le document ouvert dès qu'elles sont appliquées. Le bouton d'envoi devient « Stop » pour interrompre l'exécution à tout moment.",
  "help.assistant_resize": "Le bord gauche du panneau est redimensionnable ; la largeur est mémorisée.",
  "help.assistant_at": "Tapez @ pour joindre un fichier ou un répertoire au contexte, ou pour attacher une image d'un répertoire.",
  "help.assistant_slash": "Tapez / pour lancer un skill (recherche, résumé, correction, plan…) ou une commande admin (/help, /providers, /model, /keys).",
@@ -1619,25 +1638,21 @@
  "search.whole_word": "Mot entier",
  "settings.about": "📦 À propos",
  "settings.ai": "🤖 IA",
-  "settings.backend": "⚙️ Backend",
-  "settings.backend_hint": "Ces paramètres sont sauvegardés sur le serveur. Certains nécessitent un redémarrage ou une réindexation.",
  "settings.backend_section": "Paramètres backend",
  "settings.client_label": "Ces paramètres s'appliquent immédiatement côté client.",
  "settings.diagnostics": "🩺 Diagnostics",
+  "settings.explorer": "Explorateur",
  "settings.history_count_desc": "Entre 5 et 100 fichiers (sauvegarde sur le serveur)",
  "settings.history_count_label": "Nombre de fichiers dans l'historique",
  "settings.history_section": "Historique récent",
  "settings.no_restart_badge": "Redémarrage non requis",
  "settings.profile": "👤 Profil",
  "settings.reindex": "Forcer réindexation",
-  "settings.restart_badge": "Redémarrage requis",
-  "settings.save": "Sauvegarder",
  "settings.search": "Recherche",
-  "settings.tabs": "Tabs",
  "settings.search_placeholder": "Rechercher...",
  "settings.sync": "🔄 Synchronisation",
+  "settings.tabs": "Onglets",
  "settings.themes": "🎨 Thèmes",
-  "settings.plugins": "🧩 Plugins",
  "share.copied": "Lien copié !",
  "share.copy_link": "Copier le lien",
  "share.create": "Créer un lien de partage",
@@ -1682,6 +1697,8 @@
  "sidebar.tab_saved": "Recherches",
  "sidebar.tab_tags": "Tags",
  "sidebar.tab_vaults": "Vaults",
+  "sidebar.user_role_admin": "Administrateur",
+  "sidebar.user_role_user": "Utilisateur",
  "sidebar.vault_context_all": "Toutes les vaults",
  "sidebar.vault_specific": "Vault spécifique",
  "sync.autocomplete": "Auto-complétion",
@@ -1823,11 +1840,26 @@
  "viewer.export_title": "Exporter le document",
  "viewer.forge_brand": "Forge",
  "viewer.forge_title": "Forge (nouvel éditeur)",
+  "viewer.image_dimensions": "Dimensions",
+  "viewer.image_error": "Impossible de charger l'image",
+  "viewer.image_fullscreen": "Plein écran (lightbox)",
+  "viewer.image_metadata": "Métadonnées",
+  "viewer.image_next": "Image suivante",
+  "viewer.image_open_original": "Ouvrir l'original",
+  "viewer.image_prev": "Image précédente",
+  "viewer.image_strip_next": "Faire défiler les miniatures vers la droite",
+  "viewer.image_strip_prev": "Faire défiler les miniatures vers la gauche",
+  "viewer.image_type": "Type",
+  "viewer.image_zoom_in": "Zoom avant",
+  "viewer.image_zoom_out": "Zoom arrière",
+  "viewer.image_zoom_reset": "Réinitialiser le zoom",
  "viewer.index_start": "Démarrage index.",
  "viewer.index_updated": "Mise à jour",
  "viewer.loaded_from_cache": "Fichier chargé depuis le cache hors-ligne",
  "viewer.loading": "Chargement du fichier...",
  "viewer.markdown": "Markdown",
+  "viewer.media_too_large": "Fichier trop volumineux pour la lecture intégrée. Téléchargez-le pour le lire.",
+  "viewer.media_unsupported": "Ce format ne peut pas être lu dans votre navigateur.",
  "viewer.metadata_created": "Créé",
  "viewer.metadata_modified": "Modifié",
  "viewer.metadata_path": "Chemin",
@@ -2015,6 +2047,23 @@
  "mfa.webauthn_btn": "Valider avec ma clé",
  "mfa.webauthn_cancelled": "Cérémonie WebAuthn annulée.",
  "mfa.webauthn_no_key": "Aucune clé de sécurité enregistrée pour ce compte.",
+  "player.now_playing": "Lecture en cours",
+  "player.play": "Lecture",
+  "player.pause": "Pause",
+  "player.previous": "Précédent",
+  "player.next": "Suivant",
+  "player.seek": "Position de lecture",
+  "player.volume": "Volume",
+  "player.speed": "Vitesse de lecture",
+  "player.expand": "Agrandir le lecteur",
+  "player.minimize": "Réduire le lecteur",
+  "player.close": "Arrêter et fermer le lecteur",
+  "player.continues": "Lecture en cours — utilisez le lecteur pour l'arrêter.",
+  "player.reopen_tab": "Revenir au média",
+  "player.pip": "Image dans l'image",
+  "player.move": "Déplacer",
+  "player.resize": "Redimensionner",
+  "player.resume": "Reprise de la dernière lecture",
  "plugins.title": "🧩 Plugins",
  "plugins.description": "Étendez ObsiGate avec des renderers personnalisés, filtres de recherche et actions d'éditeur.",
  "plugins.install": "Installer le plugin",
@@ -2116,7 +2165,7 @@
    "guide105.lib_h3_conflicts": "Conflits de synchronisation",
    "guide105.lib_conflicts": "Si vous synchronisez le vault avec Syncthing, ObsiGate détecte les fichiers de conflit (copies « sync-conflict ») et propose de les comparer puis résoudre depuis la page dédiée du menu Options.",
    "guide105.lib_h3_attach": "Fichiers joints & médias",
-    "guide105.lib_attach": "Les images <code>![[image.png]]</code>, pièces jointes et médias (audio, vidéo, PDF intégrés) dans les notes sont rendus dans le viewer et indexés pour la recherche ; le bouton « Rescan attachments » de la configuration recrée l'index des pièces jointes.",
+    "guide105.lib_attach": "Les images <code>![[image.png]]</code>, pièces jointes et médias (audio, vidéo, PDF intégrés) dans les notes sont rendus dans le viewer et indexés pour la recherche. Les images apparaissent aussi dans l'arborescence et s'ouvrent dans une visionneuse dédiée (zoom molette, pan, navigation fluide entre les images du dossier — image redimensionnée au cadre, flèches latérales au survol, pellicule de miniatures persistante —, métadonnées, lightbox) ; les fichiers audio (.mp3, .wav, .flac…) et vidéo (.mp4, .webm…) s'ouvrent dans un lecteur HTML5 intégré (lecture, déplacement, vitesse, plein écran), avec repli sur le téléchargement si le format n'est pas lisible par le navigateur ; la lecture continue pendant la navigation grâce à un mini-lecteur flottant (audio) ou une mini-fenêtre vidéo, qui permet à tout moment de revenir au média ou de l'arrêter. Le bouton « Rescan attachments » de la configuration recrée l'index des pièces jointes.",
    "guide105.off_pwa": "ObsiGate est une PWA : installez-la (icône d'installation de la barre d'adresse) pour l'ouvrir comme une application. Le service worker met en cache l'interface et vos derniers documents consultés.",
    "guide105.off_edit": "Hors-ligne, vous pouvez lire les documents en cache et même les éditer : les modifications sont mises en file d'attente dans IndexedDB.",
    "guide105.off_sync": "Au retour en ligne, la file se rejoue automatiquement (badge de synchronisation dans l'en-tête). Si la version serveur a divergé entre-temps, le fichier est marqué en conflit et la version serveur est préservée en backup.",
@@ -38,7 +38,7 @@
      }
    })();
  </script>
-  <link rel="stylesheet" href="/static/style.css?v=2">
+  <link rel="stylesheet" href="/static/style.css?v=3">
  <script src="https://cdn.jsdelivr.net/npm/mermaid@11/dist/mermaid.min.js"></script>
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/styles/github-dark.min.css" id="hljs-theme-dark">
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/11.9.0/styles/github.min.css" id="hljs-theme-light" disabled>
@@ -871,8 +871,13 @@ const RightSidebarManager = {
            group.forEach(function (b) { actionsDiv.appendChild(b); });
          });

-        header.appendChild(actionsDiv);
        area.appendChild(header);
+        // #115 — pinned action bar (direct child of the scroll container) so it
+        // stays visible while long documents scroll, as in the main viewer.
+        const toolbar = document.createElement("div");
+        toolbar.className = "file-toolbar";
+        toolbar.appendChild(actionsDiv);
+        area.appendChild(toolbar);

        // Frontmatter — Accent Card
        if (data.frontmatter && Object.keys(data.frontmatter).length > 0) {
@@ -11,7 +11,7 @@
 * cache or Cloudflare does NOT clear the Service Worker Cache Storage, which is
 * a separate store. Bumping SW_VERSION invalidates it on every release.
 */
-const SW_VERSION = 'v24';
+const SW_VERSION = 'v26';
 const CODE_CACHE = `obsigate-code-${SW_VERSION}`;
 const RUNTIME_CACHE = `obsigate-runtime-${SW_VERSION}`;
 const API_CACHE = `obsigate-api-${SW_VERSION}`;
@@ -109,6 +109,13 @@ self.addEventListener('fetch', (event) => {
  // Let the browser handle range requests (PDF/streamed media) directly.
  if (request.headers.has('range')) return;

+  // Streamed audio/video is large and range-driven — never cache it
+  // (roadmap #109-E2). Image thumbnails (/api/media/{vault}/thumb) stay cached.
+  if (url.pathname.startsWith('/api/media/') && !url.pathname.endsWith('/thumb')) {
+    event.respondWith(fetch(request));
+    return;
+  }
+
  if (url.pathname.startsWith('/api/')) {
    event.respondWith(networkFirst(request, API_CACHE, () =>
      new Response(JSON.stringify({ error: 'Offline' }), {
@@ -1,6 +1,6 @@
 {
  "name": "obsigate",
-  "version": "2.16.6",
+  "version": "2.28.4",
  "description": "**Porte d'entrée web ultra-léger pour vos vaults Obsidian** — Accédez, naviguez et recherchez dans toutes vos notes Obsidian depuis n'importe quel appareil via une interface web moderne et responsive.",
  "main": "patch.js",
  "directories": {
@@ -9,7 +9,8 @@
  },
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
-    "test:e2e": "bash scripts/run-e2e-local.sh"
+    "test:e2e": "bash scripts/run-e2e-local.sh",
+    "test:e2e:ps": "pwsh -NoProfile -File scripts/run-e2e-local.ps1"
  },
  "repository": {
    "type": "git",
@@ -0,0 +1,151 @@
+<#
+.SYNOPSIS
+    ObsiGate — cycle de vie du serveur E2E local, avec progression visible.
+
+.DESCRIPTION
+    Remplace le one-liner opaque de démarrage : chaque étape affiche sa
+    progression (port, PID, attente du health check seconde par seconde,
+    version servie). Memes conditions que le job CI `e2e` et que
+    `scripts/run-e2e-local.ps1` : uvicorn natif, auth désactivée, fixtures
+    TestVault/TestDir, port 2029.
+
+    Le PID est persisté dans `data/e2e-server.pid` pour un arrêt propre
+    (`stop`) — plus de serveurs orphelins qui squattent le port.
+
+.EXAMPLE
+    ./scripts/e2e-server.ps1 start    # démarre + attend READY (défaut)
+    ./scripts/e2e-server.ps1 status   # port, PID, version servie
+    ./scripts/e2e-server.ps1 logs     # queues des logs serveur
+    ./scripts/e2e-server.ps1 stop     # arrête le serveur + libère le port
+#>
+[CmdletBinding()]
+param(
+    [Parameter(Position = 0)]
+    [ValidateSet("start", "stop", "status", "logs")]
+    [string]$Command = "start",
+
+    [string]$Port = $(if ($env:E2E_PORT) { $env:E2E_PORT } else { "2029" })
+)
+
+$ErrorActionPreference = "Stop"
+$Root = Split-Path -Parent $PSScriptRoot
+Set-Location -LiteralPath $Root
+
+$BaseUrl = "http://127.0.0.1:$Port"
+$Python = ".\.venv\Scripts\python.exe"
+$PidFile = "data/e2e-server.pid"
+$OutLog = "data/e2e-server.log"
+$ErrLog = "data/e2e-server.err.log"
+
+function Get-PortOwner {
+    $conn = Get-NetTCPConnection -LocalPort $Port -State Listen -ErrorAction SilentlyContinue |
+        Select-Object -First 1
+    if (-not $conn) { return $null }
+    $proc = Get-Process -Id $conn.OwningProcess -ErrorAction SilentlyContinue
+    return @{ Pid = $conn.OwningProcess; Name = $(if ($proc) { $proc.ProcessName } else { "?" }) }
+}
+
+function Stop-Server {
+    param([string]$Why = "")
+    $killed = @()
+    if (Test-Path -LiteralPath $PidFile) {
+        $srvPid = (Get-Content -LiteralPath $PidFile -TotalCount 1).Trim()
+        if ($srvPid -match '^\d+$') {
+            Stop-Process -Id $srvPid -Force -ErrorAction SilentlyContinue
+            $killed += $srvPid
+        }
+        Remove-Item -LiteralPath $PidFile -Force -ErrorAction SilentlyContinue
+    }
+    $owner = Get-PortOwner
+    if ($owner) {
+        Stop-Process -Id $owner.Pid -Force -ErrorAction SilentlyContinue
+        $killed += $owner.Pid
+    }
+    if ($killed.Count) { Write-Host "[OK] Serveur arrêté (PID $($killed -join ', ')). $Why" }
+    else { Write-Host "[OK] Aucun serveur en cours (port $Port libre)." }
+}
+
+switch ($Command) {
+    "stop" {
+        Write-Host "[1/1] Arrêt du serveur E2E (port $Port)..."
+        Stop-Server
+    }
+
+    "status" {
+        $owner = Get-PortOwner
+        if (-not $owner) { Write-Host "[INFO] Port $Port libre, aucun serveur."; break }
+        Write-Host "[INFO] Port $Port occupé par PID $($owner.Pid) ($($owner.Name))."
+        try {
+            $health = Invoke-WebRequest -Uri "$BaseUrl/api/health" -TimeoutSec 5 -UseBasicParsing |
+                Select-Object -ExpandProperty Content | ConvertFrom-Json
+            Write-Host "[OK] Health 200 — version $($health.version), $($health.total_files) fichiers indexés."
+        } catch {
+            Write-Host "[WARN] Processus présent mais health injoignable : $($_.Exception.Message)"
+        }
+    }
+
+    "logs" {
+        Write-Host "===== $OutLog (stdout) ====="
+        Get-Content -LiteralPath $OutLog -Tail 15 -ErrorAction SilentlyContinue
+        Write-Host "===== $ErrLog (stderr) ====="
+        Get-Content -LiteralPath $ErrLog -Tail 25 -ErrorAction SilentlyContinue
+    }
+
+    "start" {
+        Write-Host "[1/4] Port $Port..."
+        $owner = Get-PortOwner
+        if ($owner) {
+            Write-Host "[ERR] Port $Port déjà occupé par PID $($owner.Pid) ($($owner.Name))."
+            Write-Host "      Lancez d'abord : ./scripts/e2e-server.ps1 stop"
+            exit 1
+        }
+        Write-Host "      libre."
+
+        Write-Host "[2/4] Interpréteur $Python..."
+        if (-not (Test-Path -LiteralPath $Python)) {
+            Write-Host "[ERR] $Python introuvable. Créez le venv (voir AGENTS.md)."
+            exit 1
+        }
+        Write-Host "      présent."
+        New-Item -ItemType Directory -Force -Path "data" | Out-Null
+
+        Write-Host "[3/4] Démarrage uvicorn (auth désactivée, TestVault/TestDir)..."
+        $env:OBSIGATE_AUTH_ENABLED = "false"
+        $env:VAULT_1_NAME = "TestVault"
+        $env:VAULT_1_PATH = (Resolve-Path -LiteralPath "test_vault").Path
+        $env:DIR_1_NAME = "TestDir"
+        $env:DIR_1_PATH = (Resolve-Path -LiteralPath "test_dir").Path
+        $server = Start-Process -FilePath $Python `
+            -ArgumentList "-m", "uvicorn", "backend.main:app", "--host", "127.0.0.1", "--port", $Port `
+            -RedirectStandardOutput $OutLog -RedirectStandardError $ErrLog `
+            -PassThru -WindowStyle Hidden
+        $server.Id | Set-Content -LiteralPath $PidFile
+        Write-Host "      PID $($server.Id) (logs : $OutLog / $ErrLog)."
+
+        Write-Host "[4/4] Attente du health check (30 s max)..."
+        $ready = $false
+        for ($i = 1; $i -le 30; $i++) {
+            try {
+                Invoke-WebRequest -Uri "$BaseUrl/api/health" -TimeoutSec 2 -UseBasicParsing | Out-Null
+                $ready = $true
+                break
+            } catch {
+                if ($server.HasExited) {
+                    Write-Host "[ERR] Le serveur a quitté (code $($server.ExitCode)). Fin du log :"
+                    Get-Content -LiteralPath $ErrLog -Tail 15 -ErrorAction SilentlyContinue
+                    exit 1
+                }
+                if ($i % 5 -eq 0) { Write-Host "      ... $i/30 s (indexation en cours, voir $ErrLog)" }
+                Start-Sleep -Seconds 1
+            }
+        }
+        if (-not $ready) {
+            Write-Host "[ERR] Injoignable après 30 s. Fin du log :"
+            Get-Content -LiteralPath $ErrLog -Tail 15 -ErrorAction SilentlyContinue
+            exit 1
+        }
+        $health = Invoke-WebRequest -Uri "$BaseUrl/api/health" -TimeoutSec 5 -UseBasicParsing |
+            Select-Object -ExpandProperty Content | ConvertFrom-Json
+        Write-Host "[OK] READY — ObsiGate v$($health.version) sur $BaseUrl ($($health.total_files) fichiers)."
+    }
+}
@@ -0,0 +1,120 @@
+<#
+.SYNOPSIS
+    ObsiGate — E2E locaux (Playwright) sous Windows/PowerShell.
+
+.DESCRIPTION
+    Équivalent PowerShell de `scripts/run-e2e-local.sh`, pour les postes Windows
+    où `bash` n'est pas utilisable (WSL indisponible, git-bash bloqué par une
+    politique de contrôle d'application). Démarre le backend nativement via
+    uvicorn (auth désactivée, fixtures TestVault/TestDir, port 2029 — mêmes
+    conditions que le job CI `e2e`), lance la suite Playwright puis nettoie.
+
+.PARAMETER PlaywrightArgs
+    Arguments transmis à `npx playwright test`, ex. `-g "image viewer"`,
+    `--headed`.
+
+.EXAMPLE
+    ./scripts/run-e2e-local.ps1
+    ./scripts/run-e2e-local.ps1 -g "BUG-072"
+    ./scripts/run-e2e-local.ps1 --headed
+#>
+[CmdletBinding()]
+param(
+    [Parameter(ValueFromRemainingArguments = $true)]
+    [string[]]$PlaywrightArgs
+)
+
+$ErrorActionPreference = "Stop"
+
+$Root = Split-Path -Parent $PSScriptRoot
+Set-Location -LiteralPath $Root
+
+$Port = if ($env:E2E_PORT) { $env:E2E_PORT } else { "2029" }
+$BaseUrl = "http://127.0.0.1:$Port"
+$ServerLog = "data/e2e-server.log"
+$ServerErrLog = "data/e2e-server.err.log"
+
+function Assert-Command([string]$Name, [string]$Hint) {
+    if (-not (Get-Command $Name -ErrorAction SilentlyContinue)) {
+        throw "[ERR] $Name introuvable. $Hint"
+    }
+}
+
+Assert-Command "uv" "Installez-le : https://docs.astral.sh/uv/"
+Assert-Command "npx" "Installez Node.js (>= 20)."
+
+# ----- Venv Python 3.11 (créé une seule fois) -----
+$Python = ".venv-e2e/Scripts/python.exe"
+if (-not (Test-Path -LiteralPath $Python)) {
+    Write-Host "[INFO] Création du venv .venv-e2e (Python 3.11)..."
+    uv venv .venv-e2e --python 3.11
+    uv pip install --python $Python -r backend/requirements.txt
+}
+
+# ----- Port déjà occupé ? -----
+try {
+    Invoke-WebRequest -Uri "$BaseUrl/api/health" -TimeoutSec 2 -UseBasicParsing | Out-Null
+    Write-Host "[ERR] Quelque chose répond déjà sur $BaseUrl."
+    Write-Host "      Arrêtez-le ou choisissez un autre port : `$env:E2E_PORT=2030; ./scripts/run-e2e-local.ps1"
+    exit 1
+} catch {
+    # port libre
+}
+
+# ----- Démarrage du serveur (mêmes conditions que le CI e2e) -----
+Write-Host "[INFO] Démarrage d'ObsiGate sur $BaseUrl (auth désactivée)..."
+New-Item -ItemType Directory -Force -Path "data" | Out-Null
+
+$env:OBSIGATE_AUTH_ENABLED = "false"
+$env:VAULT_1_NAME = "TestVault"
+$env:VAULT_1_PATH = (Resolve-Path -LiteralPath "test_vault").Path
+$env:DIR_1_NAME = "TestDir"
+$env:DIR_1_PATH = (Resolve-Path -LiteralPath "test_dir").Path
+
+$server = Start-Process -FilePath $Python `
+    -ArgumentList "-m", "uvicorn", "backend.main:app", "--host", "127.0.0.1", "--port", $Port `
+    -RedirectStandardOutput $ServerLog -RedirectStandardError $ServerErrLog `
+    -PassThru -WindowStyle Hidden
+
+$exitCode = 1
+try {
+    # ----- Attente du health check (30 s max, comme le CI) -----
+    $ready = $false
+    for ($i = 0; $i -lt 30; $i++) {
+        try {
+            Invoke-WebRequest -Uri "$BaseUrl/api/health" -TimeoutSec 2 -UseBasicParsing | Out-Null
+            $ready = $true
+            break
+        } catch {
+            if ($server.HasExited) {
+                Write-Host "[ERR] Le serveur a quitté prématurément. Log :"
+                Get-Content -LiteralPath $ServerErrLog -Tail 30 -ErrorAction SilentlyContinue
+                exit 1
+            }
+            Start-Sleep -Seconds 1
+        }
+    }
+    if (-not $ready) {
+        Write-Host "[ERR] Serveur injoignable sur $BaseUrl. Log :"
+        Get-Content -LiteralPath $ServerErrLog -Tail 30 -ErrorAction SilentlyContinue
+        exit 1
+    }
+    Write-Host "[OK] Serveur prêt."
+
+    # ----- Browsers Playwright (no-op s'ils sont déjà installés) -----
+    npx playwright install chromium
+
+    # ----- Exécution de la suite (projet CI : chromium-desktop) -----
+    Write-Host "[INFO] BASE_URL=$BaseUrl npx playwright test --project=chromium-desktop $($PlaywrightArgs -join ' ')"
+    $env:BASE_URL = $BaseUrl
+    & npx playwright test --project=chromium-desktop @PlaywrightArgs
+    $exitCode = $LASTEXITCODE
+} finally {
+    Write-Host "[INFO] Arrêt du serveur (PID $($server.Id))..."
+    if (-not $server.HasExited) { Stop-Process -Id $server.Id -Force -ErrorAction SilentlyContinue }
+    # uvicorn (via uv) peut lancer un interpréteur enfant : tuer le groupe resté sur le port.
+    Get-NetTCPConnection -LocalPort $Port -State Listen -ErrorAction SilentlyContinue |
+        ForEach-Object { Stop-Process -Id $_.OwningProcess -Force -ErrorAction SilentlyContinue }
+}
+
+exit $exitCode
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
bruno	922dfa2e79	test: #87 T4 E2E XSS partage et lecteur + script serveur E2E avec progression	2026-09-26 21:46:16 -04:00
bruno	34fce932cb	securite: #87 T3 cookies Secure centralises + CORS atteste (defaut inchange)	2026-09-26 18:37:19 -04:00
bruno	18b1e13f34	test: #87 T2 durcissement concurrence users.json et budget temps regex	2026-09-26 18:34:06 -04:00
bruno	7bee4a237d	ci: #87 T1 bandit et npm audit bloquants, 5 suites frontend au CI	2026-09-26 18:30:04 -04:00
bruno	d6cca2b1af	feat: #85 T10 persistance etat (verrous stores, ratelimit SQLite) et cloture refonte	2026-09-26 18:10:10 -04:00
bruno	58312e64da	refactor: #85 T9 extrait realtime et render vers modules dedies (comportement inchange)	2026-09-26 16:59:25 -04:00
bruno	3b0927a8c9	refactor: #85 T8 extrait vaults-history-conflicts vers backend/routers (comportement inchange)	2026-09-26 14:46:55 -04:00
bruno	6e527c371d	refactor: #85 T7 extrait le domaine config vers backend/routers (comportement inchange)	2026-09-26 14:33:40 -04:00
bruno	6cccdc1f34	refactor: #85 T6c extrait media-pdf-export vers backend/routers (comportement inchange)	2026-09-26 14:06:52 -04:00
bruno	0abc17e9f2	refactor: #85 T6b extrait mutations fichiers-dossiers vers backend/routers (comportement inchange)	2026-09-26 13:51:36 -04:00
bruno	b83d8dacdf	refactor: #85 T6a extrait lecture fichiers vers backend/routers (comportement inchange)	2026-09-26 13:43:53 -04:00
bruno	dadc055429	refactor: #85 T5 extrait le domaine search vers backend/routers + executor partage (comportement inchange)	2026-09-26 13:14:31 -04:00
bruno	750114a923	refactor: #85 T4 extrait le domaine backups vers backend/routers + sse partage (comportement inchange)	2026-09-26 13:06:45 -04:00
bruno	83a81da319	refactor: #85 T3 extrait le domaine sharing vers backend/routers (comportement inchange)	2026-09-26 12:51:06 -04:00
bruno	3eb0256127	refactor: #85 T2 extrait le CRUD webhooks vers backend/routers (comportement inchange)	2026-09-26 12:43:57 -04:00
bruno	9d8b3cc854	refactor: #85 T1 extrait le domaine health vers backend/routers (comportement inchange)	2026-09-26 12:36:49 -04:00
bruno	0ab402aa73	docs: roadmap priorise dette et securite #85 #87 (#77 non signe, #73 reporte) CI / lint (push) Successful in 2m13s Details CI / security (push) Successful in 1m34s Details CI / test (push) Successful in 4m9s Details CI / build (push) Successful in 1m31s Details CI / e2e (push) Successful in 14m17s Details	2026-09-26 11:55:32 -04:00
bruno	c36c299466	docs: #152 — aligne changelog et roadmap sur la version livrée 2.27.0 Fusionne la section 2.26.0 (jamais publiée) dans 2.27.0 et corrige la ligne index de la roadmap ; suppression du tag local v2.26.0.	2026-09-25 20:32:14 -04:00
bruno	8611416670	feat: #152 viewer XLSX — affichage multi-feuilles, édition des cellules et téléchargement des .xlsx - backend/xlsx_reader.py : rend openpyxl en tableaux HTML (plafond 500x40 par feuille) - PUT /api/file/{vault}/xlsx/save : service edit_xlsx_cells (backup avant écriture, refs A1 validées) - frontend : renderXlsxViewer (onglets, contenteditable, sauvegarde par feuille) - docs : CHANGELOG [Unreleased], Roadmap index #152, archive, README FR/EN, exemple OpenAPI	2026-09-25 20:30:45 -04:00
bruno	e20fd6bf97	fix: /api/diagnostics 500 « dictionary changed size during iteration » — snapshot des dicts avant itération BUG-079 CI / lint (push) Successful in 2m3s Details CI / security (push) Successful in 1m27s Details CI / test (push) Successful in 4m22s Details CI / build (push) Successful in 1m22s Details CI / e2e (push) Successful in 13m36s Details	2026-09-24 17:13:40 -04:00
bruno	943005328c	feat: barre d'outils de lecture epinglee, coloration syntaxique des fichiers de code et avatars predefinis (#115 , #117 , BUG-078) CI / lint (push) Successful in 2m5s Details CI / security (push) Successful in 1m27s Details CI / test (push) Successful in 4m10s Details CI / build (push) Successful in 1m23s Details CI / e2e (push) Successful in 13m55s Details	2026-09-24 16:21:45 -04:00
bruno	e1842043d8	feat: assistant IA — approbation groupee des actions, bloc d'etapes, refresh UI et bouton Stop (BUG-074, BUG-075, BUG-076, BUG-077) CI / lint (push) Successful in 2m1s Details CI / security (push) Successful in 1m25s Details CI / test (push) Successful in 4m19s Details CI / build (push) Successful in 1m26s Details CI / e2e (push) Successful in 13m38s Details	2026-09-24 10:05:32 -04:00
bruno	9fb094f505	feat: refonte mobile de la section Configurations #114 CI / lint (push) Successful in 2m1s Details CI / security (push) Successful in 1m26s Details CI / test (push) Successful in 4m50s Details CI / build (push) Successful in 1m22s Details CI / e2e (push) Successful in 15m34s Details	2026-09-24 08:43:18 -04:00
bruno	d142049216	fix: degagement mobile sous la barre de navigation du bas (clearance retargetee .main-body) BUG-073 CI / lint (push) Successful in 1m59s Details CI / security (push) Successful in 1m26s Details CI / test (push) Successful in 3m41s Details CI / build (push) Successful in 1m21s Details CI / e2e (push) Successful in 14m0s Details	2026-09-23 23:36:35 -04:00
bruno	33fe1a3439	feat: ordre naturel des sections Configurations et avatar utilisateur #113 CI / lint (push) Successful in 1m59s Details CI / security (push) Successful in 1m28s Details CI / test (push) Successful in 4m14s Details CI / build (push) Successful in 1m20s Details CI / e2e (push) Successful in 13m43s Details	2026-09-23 22:18:29 -04:00
bruno	a726ad8511	feat: en-tete allege, compte utilisateur en sidebar et pellicule d'images defilable (molette + fleches) #112 CI / lint (push) Successful in 1m59s Details CI / security (push) Successful in 1m29s Details CI / test (push) Successful in 4m59s Details CI / build (push) Successful in 1m48s Details CI / e2e (push) Successful in 13m49s Details	2026-09-23 21:06:41 -04:00
bruno	b926f01b85	feat: visionneuse d'images - navigation fluide, image ajustee au cadre, fleches laterales et pellicule persistante #111 CI / lint (push) Successful in 2m2s Details CI / security (push) Successful in 1m23s Details CI / test (push) Successful in 4m23s Details CI / build (push) Successful in 1m19s Details CI / e2e (push) Successful in 13m27s Details	2026-09-23 14:37:41 -04:00
bruno	8264e7ffae	fix: conserver plein ecran et panneau metadonnees dans la visionneuse d'images (sidebar droite) + lanceur E2E Windows BUG-072 CI / lint (push) Successful in 2m1s Details CI / security (push) Successful in 1m23s Details CI / test (push) Successful in 4m27s Details CI / build (push) Successful in 1m19s Details CI / e2e (push) Successful in 17m45s Details	2026-09-23 13:43:47 -04:00
bruno	80852374a8	fix: positionnement lecteur media (mobile/desktop) et drag libre de la mini-video #110 CI / lint (push) Successful in 2m0s Details CI / security (push) Successful in 1m22s Details CI / test (push) Successful in 4m36s Details CI / build (push) Successful in 1m18s Details CI / e2e (push) Successful in 13m7s Details	2026-09-23 11:42:23 -04:00
bruno	e3c6789776	feat: lecteur média persistant Now Playing (dock audio, mini-vidéo PiP, Media Session, mobile) #110 CI / lint (push) Successful in 2m5s Details CI / security (push) Successful in 1m23s Details CI / test (push) Successful in 3m57s Details CI / build (push) Successful in 1m18s Details CI / e2e (push) Successful in 13m18s Details	2026-09-23 10:41:15 -04:00
bruno	e2417cb5ab	feat: support audio & vidéo — lecteurs HTML5 intégrés #109 CI / lint (push) Successful in 1m58s Details CI / security (push) Successful in 1m22s Details CI / test (push) Successful in 4m32s Details CI / build (push) Successful in 2m6s Details CI / e2e (push) Successful in 12m57s Details	2026-09-23 09:14:34 -04:00
bruno	eccbf7474e	feat: support complet des images — arborescence, visionneuse, indexation #108 CI / lint (push) Successful in 1m57s Details CI / security (push) Successful in 1m22s Details CI / test (push) Successful in 4m32s Details CI / build (push) Failing after 1m16s Details CI / e2e (push) Skipped Details	2026-09-23 07:47:04 -04:00
bruno	69cee4d93a	docs(roadmap): add #108 image support and #109 audio/video players CI / lint (push) Successful in 1m55s Details CI / security (push) Successful in 1m25s Details CI / test (push) Successful in 4m33s Details CI / build (push) Successful in 1m15s Details CI / e2e (push) Successful in 11m59s Details - #108: images parity — tree + indexing (never read bytes into TF-IDF), fix broken standalone viewer (img src points to JSON /raw instead of /api/image), zoom/pan viewer, thumbnails, SVG sandbox hardening - #109: audio/video — HTML5 players, shared media streaming endpoint with Range/206 (extract helper from existing pdf/stream), codec fallback UI, PWA/mobile notes - Update effort summary (8 items, ~28-43 days)	2026-09-22 23:28:55 -04:00
@@ -1 +1 @@
 .16.6
 .28.4