docs: #87 T4 consigne resultats E2E locaux (108/108 desktop, 10/10 mobiles cibles)

test: #87 T4 E2E XSS partage et lecteur + script serveur E2E avec progression
securite: #87 T3 cookies Secure centralises + CORS atteste (defaut inchange)
2026-09-26 22:22:31 -04:00 · 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
99 changed files with 8890 additions and 4580 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
@@ -44,6 +44,11 @@ jobs:
          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: |
@@ -126,11 +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:
@@ -192,6 +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
@@ -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 **2.22.1**.
+> [Unreleased](#unreleased). La dernière version livrée est **2.28.5**.

 ---

@@ -14,6 +14,329 @@ et [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

 ---

+## [2.28.5] — 2026-09-26
+
+---
+
+## [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
@@ -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-2.22.1-blue.svg)]()
+[![Version](https://img.shields.io/badge/Version-2.28.5-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/)
@@ -85,6 +85,7 @@ Les **guides d'utilisation** pas à pas se trouvent dans [`docs/GUIDES/`](docs/G
 - **🖼️ 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
@@ -975,8 +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 → v2.22.1).
+Consultez le [CHANGELOG.md](./CHANGELOG.md) pour l'historique complet de toutes les versions (v1.0.0 → v2.28.5).

 ---

-*Projet : ObsiGate | Version : 2.22.1 | Dernière mise à jour : Septembre 2026*
+*Projet : ObsiGate | Version : 2.28.5 | 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-2.22.1-blue.svg)]()
+[![Version](https://img.shields.io/badge/Version-2.28.5-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/)
@@ -84,6 +84,7 @@ Step-by-step **user guides** live in [`docs/GUIDES/`](docs/GUIDES/):
 - **🖼️ 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
@@ -1150,8 +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 → v2.22.1).
+See [CHANGELOG.md](./CHANGELOG.md) for the complete version history (v1.0.0 → v2.28.5).

 ---

-*Project: ObsiGate | Version: 2.22.1 | Last updated: September 2026*
+*Project: ObsiGate | Version: 2.28.5 | Last updated: September 2026*
@@ -1 +1 @@
-2.22.1
+2.28.5
@@ -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(
@@ -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


 # ---------------------------------------------------------------------------
@@ -5,6 +5,7 @@
 import base64
 import binascii
 import logging
+import os
 import re

 from fastapi import APIRouter, Body, Depends, HTTPException, Request, Response
@@ -56,6 +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):
@@ -229,9 +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,
@@ -253,7 +264,8 @@ 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"],
@@ -299,9 +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.
@@ -332,7 +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,
    }

@@ -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

@@ -65,6 +65,7 @@ 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",
@@ -559,6 +560,12 @@ def _scan_vault(
                    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("_", " ")
@@ -947,6 +954,10 @@ def _index_single_file_sync(vault_name: str, vault_path: str, file_path: str, va
            # #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()
@@ -32,7 +32,8 @@ def thumb_cache_path(file_path: Path, size: int) -> Path:
        stamp = f"{st.st_mtime_ns}:{st.st_size}"
    except OSError:
        stamp = "0:0"
-    key = hashlib.sha1(f"{file_path}:{stamp}:{size}".encode()).hexdigest()
+    # 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"


@@ -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
@@ -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
 # ---------------------------------------------------------------------------
@@ -408,6 +849,31 @@ class DashboardResponse(BaseModel):
    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")
+
+
 # ---------------------------------------------------------------------------
 # Webhooks, sharing & conflicts
 # ---------------------------------------------------------------------------
@@ -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 = "2.22.1"
+version = "2.28.5"
 dependencies = [
 "chrono",
 "env_logger",
@@ -1,6 +1,6 @@
 [package]
 name = "obsigate-desktop"
-version = "2.22.1"
+version = "2.28.5"
 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": "2.22.1",
+  "version": "2.28.5",
  "identifier": "com.obsigate.desktop",
  "build": {
    "frontendDist": "../frontend",
@@ -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

 ---

@@ -183,6 +183,12 @@ Avant de corriger quoi que ce soit, un agent IA doit :
 | *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)

@@ -262,6 +268,11 @@ Avant de corriger quoi que ce soit, un agent IA doit :
 | 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 :** 2.22.1 | **Dernière mise à jour :** 2026-09-23
+> **Version :** 2.28.5 | **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)**
@@ -37,14 +37,17 @@
 - **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)

+---
+
 ## ⚪ Backlog — Priorité 4 (P4)

 ### 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
@@ -58,60 +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) + `scripts/e2e-server.ps1` (cycle de vie serveur E2E avec progression `start|stop|status|logs`) + validation locale projet `chromium-desktop` : **108/108 verts** (obsigate 44, split 37, viewers 24, xss/header 3), mobiles ciblés 10/10
+  - [ ] 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

 ---
@@ -124,6 +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) |
@@ -186,6 +148,11 @@
 | 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) |

 ---

@@ -193,16 +160,18 @@

 | Priorité | Items | Effort total estimé |
 |---|---|---|
-| ✅ Complété | #1 → #59, #61–72, #74–76, #78–84, #86, #88–93, #94–100, #102–113, #92 | ~131 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** | **~23-38 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 +1,172 @@
+# #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 +1,122 @@
+# #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).
@@ -1551,6 +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
@@ -1649,6 +1660,27 @@
                                                <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">
@@ -2146,7 +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">
@@ -2509,7 +2540,7 @@

                            <!-- Partages publics -->
                            <section class="config-section help-section" id="cfg-partages-publics">
-                                <h2 id="cfg-partages-publics">📤 Partages publics</h2>
+                                <h2>📤 Partages publics</h2>
                                <p class="config-description">
                                    Liens de partage publics pour des documents
                                    (lecture seule, sans authentification).
@@ -2517,23 +2548,22 @@
                                <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>
-                                                                                                                    <div id="plugins-settings-container"></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"
-                                                        >
+                            <!-- À propos -->
+                            <section
+                                class="config-section help-section"
+                                id="cfg-about"
+                            >
                                <h2 data-i18n="auto.a3319169">📦 À propos</h2>
                                <div
                                    id="config-about"
@@ -4635,6 +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.
@@ -5614,7 +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"
@@ -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 ---
@@ -2502,6 +2534,7 @@ function initProfile() {
  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.
@@ -2522,6 +2555,59 @@ function initProfile() {
    })
    .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();
@@ -2555,6 +2641,7 @@ function initProfile() {
      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');
@@ -2573,6 +2660,7 @@ function initProfile() {
        AuthManager.updateCachedUser(user);
        _renderProfileAvatar(null);
        AuthManager.renderUserSection();
+        clearActivePreset();
        showToast(t('config.avatar_removed'), 'success');
      } catch (err) {
        _profileAvatarError('config.avatar_upload_failed');
@@ -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() {});
 }

@@ -995,6 +995,110 @@ export function renderVideoViewer(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
@@ -1058,6 +1162,12 @@ 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);
@@ -1418,7 +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);
@@ -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",
@@ -382,6 +386,7 @@
  "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",
@@ -578,6 +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",
@@ -1351,6 +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).",
@@ -1631,25 +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",
@@ -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",
@@ -382,6 +386,7 @@
  "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",
@@ -578,6 +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",
@@ -1351,6 +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).",
@@ -1631,25 +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",
@@ -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) {
@@ -1767,7 +1767,22 @@ select {

 /* File header */
 .file-header {
-  margin-bottom: 20px;
+  margin-bottom: 8px;
+}
+/* #115 — sticky document action bar: stays visible while long content scrolls.
+   A direct child of `.content-area` (the scroll container), opaque so the text
+   scrolling underneath never bleeds through. */
+.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);
+}
+.file-toolbar .file-actions {
+  margin-top: 0;
 }
 .file-title {
  font-family: "JetBrains Mono", monospace;
@@ -2670,6 +2685,32 @@ select {
 .profile-avatar-remove-btn { background: var(--danger-bg) !important; color: var(--danger) !important; border-color: var(--danger) !important; }
 .profile-avatar-error { font-size: 0.7rem; color: var(--danger); margin-top: 8px; }
 .profile-avatar-error.hidden { display: none; }
+/* #117 — preset avatar gallery */
+.profile-avatar-presets {
+  display: grid;
+  grid-template-columns: repeat(6, minmax(0, 1fr));
+  gap: 8px;
+  margin-top: 10px;
+  max-width: 420px;
+}
+.profile-avatar-preset {
+  padding: 0;
+  margin: 0;
+  border: 2px solid var(--border);
+  border-radius: 50%;
+  overflow: hidden;
+  cursor: pointer;
+  background: var(--bg-secondary);
+  aspect-ratio: 1;
+  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.1s ease;
+}
+.profile-avatar-preset img { width: 100%; height: 100%; object-fit: cover; display: block; }
+.profile-avatar-preset:hover { border-color: var(--accent); transform: translateY(-1px); }
+.profile-avatar-preset.active {
+  border-color: var(--accent);
+  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
+}
+.profile-avatar-preset:disabled { opacity: 0.6; cursor: progress; }
 .config-save-btn {
  padding: 6px 18px; font-size: 0.75rem; font-weight: 600;
  background: var(--accent); color: #fff;
@@ -3164,6 +3205,23 @@ select {
  margin-right: 8px;
 }
 .help-hamburger:hover { color: var(--accent); border-color: var(--accent); }
+/* #114: close button for the mobile TOC drawer (hidden on desktop where the
+   nav is always visible). Scoped to #config-modal so the help modal — which
+   has no such button — is unaffected. */
+.help-toc-close {
+  display: none;
+  width: 44px;
+  height: 44px;
+  padding: 0;
+  border: 1px solid var(--border);
+  border-radius: 6px;
+  background: transparent;
+  color: var(--text-secondary);
+  cursor: pointer;
+  align-items: center;
+  justify-content: center;
+  flex-shrink: 0;
+}
 .help-nav {
  width: 260px;
  min-width: 260px;
@@ -4777,22 +4835,209 @@ body.resizing-v {
  }
 }

-/* BUG-071: Configurations modal — mobile usability (viewport ≤ 768px).
-   #config-nav shares the .help-nav rule that hides it, but the config modal
-   had no toggle (unlike the help modal): the header hamburger
-   (#config-hamburger, same .help-hamburger treatment) reveals it as a
-   collapsible top block. Two-column grids and fixed-width add-rows are
-   stacked/wrapped so nothing overflows a 360px viewport. */
+/* --- #114: Configurations modal — mobile UX refonte (viewport ≤ 768px).
+   Builds on BUG-071 (which stacked grids/wrapped rows): the TOC becomes a
+   left slide-over drawer with a backdrop, the modal goes full-screen with
+   100dvh, every interactive control gets a ≥44px touch target, inputs are
+   ≥16px to stop iOS auto-zoom, and the backend Save row sticks to the
+   bottom of its scroll container. The drawer is opened by JS toggling
+   .config-toc-open on #config-modal (backdrop + nav visibility) plus an
+   inline display on #config-nav (kept for the display-reset contract). */
@media (max-width: 768px) {
-  /* TOC as a collapsible top block (JS toggles inline display flex/none,
-     which wins over the hiding rule); the list scrolls within a capped nav. */
-  #config-modal #config-nav {
+  /* Full-screen modal with dynamic viewport height (mobile browser chrome). */
+  #config-modal {
+    padding: 0;
+    align-items: stretch;
+  }
+  #config-modal .editor-container {
+    max-width: 100%;
+    width: 100%;
+    height: 100vh;
+    height: 100dvh;
+    max-height: 100vh;
+    max-height: 100dvh;
+    border-radius: 0;
+    border: none;
+    overflow: hidden;
+  }
+  /* Hamburger: 44px touch target (shared .help-hamburger rule in the help
+     modal media query also sets 44px; this scopes it to the config modal
+     in case rule order changes). */
+  #config-modal .help-hamburger {
+    display: inline-flex;
+    width: 44px;
+    height: 44px;
+    min-width: 44px;
+  }
+  /* Close button in the TOC drawer header. */
+  #config-modal .help-toc-close {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+  }
+  #config-modal .help-nav-header {
+    padding: 12px 12px 8px;
+    gap: 8px;
+  }
+  /* Close (X) in the modal header. */
+  #config-modal .editor-btn {
+    width: 44px;
+    height: 44px;
+    min-width: 44px;
+  }
+  /* Anti-zoom: ≥16px font on text fields inside the config modal. Never
+     target input[type=text] globally — it would clobber .mfa-code-input. */
+  #config-modal .config-input,
+  #config-modal .config-select,
+  #config-modal .help-nav-search,
+  #config-modal .profile-field .config-input,
+  #config-modal .profile-field .config-select {
+    min-height: 44px;
+    font-size: 16px;
+  }
+  #config-modal .config-input--num {
+    width: 100%;
+    text-align: left;
+  }
+  #config-modal .help-nav-search-wrap {
+    padding: 0 12px 10px;
+  }
+  #config-modal .help-search-clear {
+    min-width: 44px;
+    min-height: 44px;
+  }
+  #config-modal .help-nav-link {
+    min-height: 44px;
+    display: flex;
+    align-items: center;
+    box-sizing: border-box;
+  }
+  /* Sticky Save row inside #cfg-backend-settings (its scroll container is
+     #config-scroll.help-content, which is the overflow ancestor). */
+  #config-modal .config-actions-row {
+    position: sticky;
+    bottom: 0;
+    z-index: 5;
+    display: flex;
+    flex-direction: column;
+    gap: 8px;
+    margin-top: 16px;
+    margin-bottom: 0;
+    padding: 10px 0 calc(10px + env(safe-area-inset-bottom, 0));
+    background: var(--bg-primary);
+    border-top: 1px solid var(--border);
+  }
+  #config-modal .config-actions-row .config-btn-save,
+  #config-modal .config-actions-row .config-btn-secondary,
+  #config-modal .config-actions-row .config-btn-primary,
+  #config-modal .config-actions-row .config-btn-danger {
+    flex: 1 1 auto;
+    width: 100%;
+    min-height: 44px;
+    box-sizing: border-box;
+  }
+  #config-modal .config-btn-save,
+  #config-modal .config-btn-secondary,
+  #config-modal .config-btn-primary,
+  #config-modal .config-btn-danger,
+  #config-modal .config-btn-add,
+  #config-modal .config-btn-sm,
+  #config-modal .mfa-link-btn,
+  #config-modal .theme-action-btn,
+  #config-modal .profile-avatar-actions .config-btn-secondary,
+  #config-modal .editor-btn {
+    min-height: 44px;
+    box-sizing: border-box;
+  }
+  #config-modal .config-btn-sm,
+  #config-modal .mfa-link-btn,
+  #config-modal .theme-action-btn {
+    min-width: 44px;
+    padding-left: 12px;
+    padding-right: 12px;
+  }
+  /* Profile avatar row: wrap instead of overflowing a 360px viewport. */
+  #config-modal .profile-avatar-row {
+    flex-wrap: wrap;
+    gap: 12px;
+  }
+  /* Preset avatars: 4 per row on narrow screens (44px touch targets). */
+  #config-modal .profile-avatar-presets {
+    grid-template-columns: repeat(4, minmax(0, 1fr));
+    max-width: 100%;
+  }
+  #config-modal .profile-form {
+    max-width: 100%;
+  }
+  /* MFA: one-column recovery list, wrapping action rows, full-width code
+     input with a readable letter-spacing (12px overflows 360px). */
+  #config-modal .mfa-recovery-list {
+    grid-template-columns: 1fr;
+    gap: 6px;
+  }
+  #config-modal .mfa-verify-section,
+  #config-modal .mfa-recovery-actions,
+  #config-modal .mfa-disable-actions {
+    flex-wrap: wrap;
+  }
+  #config-modal .mfa-verify-section .config-input,
+  #config-modal .mfa-verify-section .config-btn-primary {
+    flex: 1 1 100%;
    width: 100%;
    min-width: 0;
-    max-width: 100%;
-    border-right: none;
-    border-bottom: 1px solid var(--border);
-    max-height: 46vh;
+    box-sizing: border-box;
+  }
+  #config-modal .mfa-recovery-actions .config-btn-secondary,
+  #config-modal .mfa-disable-actions .config-btn-danger {
+    flex: 1 1 auto;
+    min-height: 44px;
+    box-sizing: border-box;
+  }
+  #config-modal .mfa-code-input {
+    width: 100%;
+    max-width: 320px;
+    min-height: 52px;
+    font-size: 24px;
+    letter-spacing: 6px;
+  }
+  #config-modal .mfa-secret-code {
+    display: block;
+    word-break: break-all;
+    overflow-wrap: anywhere;
+  }
+  #config-modal .mfa-code-input-group {
+    flex-wrap: wrap;
+    justify-content: flex-start;
+  }
+  /* WebAuthn key rows: wrap instead of clipping the remove button. */
+  #config-modal .webauthn-key-item {
+    flex-wrap: wrap;
+    gap: 8px;
+  }
+  #config-modal .webauthn-key-label {
+    flex: 1 1 100%;
+    min-width: 0;
+  }
+  #config-modal .webauthn-key-item .config-btn-sm {
+    min-height: 44px;
+    min-width: 44px;
+  }
+  #config-modal .hidden-files-add-row {
+    flex-wrap: wrap;
+  }
+  #config-modal .hidden-files-add-row .config-input {
+    flex: 1 1 100%;
+    max-width: none;
+    min-width: 0;
+  }
+  #config-modal .config-diag-row {
+    flex-wrap: wrap;
+    gap: 4px 8px;
+  }
+  /* AI keys sticky footer: clear the mobile toolbar + home indicator. */
+  #config-modal .ai-keys-footer {
+    padding-bottom: calc(12px + env(safe-area-inset-bottom, 0));
+    bottom: 0;
  }
  /* Two-column grids → single column. */
  #config-modal .ai-default-grid,
@@ -4851,6 +5096,61 @@ body.resizing-v {
    min-width: 0;
    overflow-wrap: anywhere;
  }
+  /* Drawer: left slide-over above a dimming backdrop. Higher specificity
+     than the generic .help-nav rules (body .help-nav / .help-nav) that hide
+     the nav on mobile. JS toggles .config-toc-open on #config-modal. */
+  #config-modal #config-nav {
+    position: fixed;
+    top: 0;
+    left: 0;
+    bottom: 0;
+    width: min(320px, 88vw);
+    min-width: 0;
+    max-width: 88vw;
+    max-height: 100dvh;
+    height: 100%;
+    box-sizing: border-box;
+    z-index: 40;
+    background: var(--bg-secondary);
+    border-right: 1px solid var(--border);
+    border-bottom: none;
+    box-shadow: none;
+    backdrop-filter: none;
+    display: none;
+    overflow: hidden;
+    animation: config-toc-slide-in 200ms ease-out;
+  }
+  #config-modal.config-toc-open #config-nav {
+    display: flex;
+    max-height: 100dvh;
+  }
+  #config-modal .help-nav-list {
+    padding-bottom: calc(20px + env(safe-area-inset-bottom, 0));
+  }
+  /* Backdrop: covers the full modal, sits above the content (z-index auto)
+     and below the drawer (z-index 40). Clicks on the pseudo-element are
+     attributed to #config-modal, so the existing e.target === modal handler
+     closes the drawer first; it also blocks taps reaching the content. */
+  #config-modal.config-toc-open::before {
+    content: "";
+    position: absolute;
+    inset: 0;
+    z-index: 35;
+    background: rgba(0, 0, 0, 0.45);
+  }
+  @keyframes config-toc-slide-in {
+    from {
+      transform: translateX(-100%);
+    }
+    to {
+      transform: translateX(0);
+    }
+  }
+  /* Content area gets a bottom pad so the sticky Save row never covers the
+     last controls while the virtual keyboard is open. */
+  #config-modal #config-scroll .config-content {
+    padding-bottom: 80px;
+  }
 }

 /* --- Toast notifications --- */
@@ -5819,28 +6119,6 @@ body.resizing-v {
  font-size: 0.9rem;
 }

-.config-btn-add {
-  padding: 6px 12px;
-  background: var(--accent);
-  color: white;
-  border: none;
-  border-radius: 4px;
-  cursor: pointer;
-  font-size: 0.875rem;
-  font-weight: 500;
-  transition: all 150ms ease;
-  white-space: nowrap;
-}
-
-.config-btn-add:hover {
-  background: color-mix(in srgb, var(--accent) 85%, black);
-  transform: translateY(-1px);
-}
-
-.config-btn-add:active {
-  transform: translateY(0);
-}
-
 /* ---------------------------------------------------------------------------
   Utility — hidden class
   --------------------------------------------------------------------------- */
@@ -7907,7 +8185,6 @@ body.popup-mode .content-area {
 .webhook-events { color: var(--text-muted); font-size: 0.7rem; }
 .webhook-delete { background: none; border: none; color: var(--text-error); cursor: pointer; font-size: 1rem; padding: 2px 6px; }
 .config-add-row { display: flex; gap: 8px; margin-top: 8px; }
-.config-btn-add { padding: 6px 14px; background: var(--accent); color: #fff; border: none; border-radius: 6px; cursor: pointer; font-size: 0.8rem; }

 /* ── API/MCP tokens UI (#107) ── */
 .token-item {
@@ -8506,9 +8783,13 @@ body.desktop-mode .editor-container {

  .help-hamburger {
    display: inline-flex;
+    width: 44px;
+    height: 44px;
+    min-width: 44px;
  }

-  /* TOC: collapsible block at top (not slide-over) */
+  /* TOC drawer: collapsible block for the help modal; the config modal
+     (#114) overrides this with a fixed left drawer + backdrop. */
  .help-nav {
    position: static;
    width: 100%;
@@ -10643,6 +10924,69 @@ body.desktop-mode .editor-container {
  background: var(--surface);
 }

+/* ── XLSX Viewer ── */
+.xlsx-toolbar {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  margin-bottom: 8px;
+  flex-wrap: wrap;
+}
+.xlsx-toolbar-actions {
+  margin-left: auto;
+  display: flex;
+  gap: 8px;
+}
+.xlsx-tabs {
+  display: flex;
+  gap: 4px;
+  flex-wrap: wrap;
+}
+.xlsx-tab {
+  border: 1px solid var(--border);
+  background: var(--surface);
+  color: var(--text-secondary);
+  border-radius: 4px;
+  padding: 4px 10px;
+  font-size: 0.8rem;
+  cursor: pointer;
+}
+.xlsx-tab.active {
+  background: var(--accent, #4a90d9);
+  border-color: var(--accent, #4a90d9);
+  color: #fff;
+}
+.xlsx-table th.xlsx-corner,
+.xlsx-table th.xlsx-rownum {
+  background: var(--surface);
+  color: var(--text-secondary);
+  font-weight: 400;
+  text-align: right;
+  padding: 6px 8px;
+  border-bottom: 2px solid var(--border);
+  border-right: 1px solid var(--border-light, var(--border));
+  position: sticky;
+  left: 0;
+  z-index: 1;
+}
+.xlsx-table th.xlsx-corner {
+  left: 0;
+  top: 0;
+  z-index: 2;
+}
+.xlsx-table td[contenteditable] {
+  cursor: text;
+  min-width: 40px;
+  white-space: pre-wrap;
+}
+.xlsx-table td[contenteditable]:focus {
+  outline: 2px solid var(--accent, #4a90d9);
+  outline-offset: -2px;
+}
+.xlsx-table td.xlsx-dirty {
+  background: rgba(255, 196, 0, 0.18);
+}
+
 /* ── JSON Viewer ── */
 .json-viewer {
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
@@ -10763,7 +11107,6 @@ body.desktop-mode .editor-container {
 }
 .mfa-link-btn:hover { opacity: 0.8; }
 .mfa-error { color: #e74c3c; font-size: 13px; margin-top: 8px; }
-.mfa-recovery-input { width: 200px; font-size: 20px; letter-spacing: 4px; }

 /* MFA Settings (Security tab) */
 .mfa-status-section { padding: 16px 0; }
@@ -10962,6 +11305,9 @@ body.desktop-mode .editor-container {
  justify-content: center; flex-shrink: 0; }
 .bookslm-input-area button:hover { opacity: 0.9; }
 .bookslm-input-area button:disabled { opacity: 0.5; cursor: not-allowed; }
+/* BUG-077 — the send button doubles as a Stop control while streaming. */
+.bookslm-input-area button.bookslm-btn-send.is-stopping { background: var(--danger); }
+.bookslm-input-area button.bookslm-btn-send.is-stopping:hover { opacity: 1; filter: brightness(1.08); }
 .bookslm-input-hint { padding: 0 16px 10px; font-size: 10px; color: var(--text-secondary);
  text-align: right; border-top: none; }
 /* Action cards proposed by the General assistant (file/dir creation). */
@@ -10990,6 +11336,9 @@ body.desktop-mode .editor-container {
 .bookslm-tool-trace > summary:hover { color: var(--text-primary); }
 .bookslm-tool-trace[open] > summary { margin-bottom: 4px; }
 .bookslm-steps-dots { color: var(--accent); }
+/* BUG-074 — preview of the first action next to the step counter. */
+.bookslm-steps-title { color: var(--text-secondary); max-width: 45vw; overflow: hidden;
+  text-overflow: ellipsis; white-space: nowrap; }
 .bookslm-steps-body { display: flex; flex-direction: column; gap: 3px; }
 .bookslm-chevron { font-size: 8px; line-height: 1; opacity: 0.7; }
 .bookslm-chevron::before { content: '▶'; }
@@ -11025,6 +11374,15 @@ details[open] > summary .bookslm-chevron::before { content: '▼'; }
 /* Mutation confirmation card (two-step propose/apply). */
 .bookslm-confirm { flex-wrap: wrap; }
 .bookslm-confirm-diff { flex-basis: 100%; width: 100%; margin-top: 4px; }
+/* BUG-075 — one row per action when the run batches several mutations. */
+.bookslm-confirm-actions { flex-basis: 100%; width: 100%; display: flex;
+  flex-direction: column; gap: 4px; margin-top: 4px; }
+.bookslm-confirm-action > summary { display: inline-flex; align-items: center; gap: 5px;
+  font-size: 12px; color: var(--text-secondary); cursor: pointer; list-style: none;
+  word-break: break-word; }
+.bookslm-confirm-action > summary::-webkit-details-marker { display: none; }
+.bookslm-confirm-action > summary:hover { color: var(--text-primary); }
+.bookslm-confirm-action[open] > summary { color: var(--text-primary); }
 .bookslm-diff-title { font-size: 11px; color: var(--text-secondary); margin-bottom: 4px; }
 .bookslm-diff { background: rgba(0,0,0,0.25); border-radius: 6px; padding: 8px;
  overflow-x: auto; font-size: 12px; line-height: 1.4; max-height: 240px; margin: 0; }
@@ -11604,6 +11962,7 @@ body.reading-mode .main-body {
  padding-bottom: 0;
 }
 body.reading-mode .breadcrumb,
+body.reading-mode .file-toolbar,
 body.reading-mode .file-actions {
  display: none;
 }
@@ -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-${SW_VERSION}`;
@@ -1,6 +1,6 @@
 {
  "name": "obsigate",
-  "version": "2.22.1",
+  "version": "2.28.5",
  "description": "**Porte d'entrée web ultra-léger pour vos vaults Obsidian** — Accédez, naviguez et recherchez dans toutes vos notes Obsidian depuis n'importe quel appareil via une interface web moderne et responsive.",
  "main": "patch.js",
  "directories": {
@@ -0,0 +1,151 @@
+<#
+.SYNOPSIS
+    ObsiGate — cycle de vie du serveur E2E local, avec progression visible.
+
+.DESCRIPTION
+    Remplace le one-liner opaque de démarrage : chaque étape affiche sa
+    progression (port, PID, attente du health check seconde par seconde,
+    version servie). Memes conditions que le job CI `e2e` et que
+    `scripts/run-e2e-local.ps1` : uvicorn natif, auth désactivée, fixtures
+    TestVault/TestDir, port 2029.
+
+    Le PID est persisté dans `data/e2e-server.pid` pour un arrêt propre
+    (`stop`) — plus de serveurs orphelins qui squattent le port.
+
+.EXAMPLE
+    ./scripts/e2e-server.ps1 start    # démarre + attend READY (défaut)
+    ./scripts/e2e-server.ps1 status   # port, PID, version servie
+    ./scripts/e2e-server.ps1 logs     # queues des logs serveur
+    ./scripts/e2e-server.ps1 stop     # arrête le serveur + libère le port
+#>
+[CmdletBinding()]
+param(
+    [Parameter(Position = 0)]
+    [ValidateSet("start", "stop", "status", "logs")]
+    [string]$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)."
+    }
+}
@@ -1,15 +1,18 @@
 /**
- * E2E tests for the Configurations modal on mobile (BUG-071).
+ * E2E tests for the Configurations modal on mobile (BUG-071 + #114).
 *
 * Runs only under the `chromium-mobile` Playwright project (viewport ≤ 768px);
 * skipped on the desktop project that the CI job executes — same convention
 * as mobile-editor.spec.js.
 *
 * Covered:
- *  - the TOC hamburger (#config-hamburger) is visible and reveals #config-nav,
- *    which is hidden by default on mobile;
+ *  - the TOC hamburger (#config-hamburger) is visible and reveals #config-nav
+ *    as a left slide-over drawer (fixed positioning), hidden by default;
+ *  - the drawer has a close button (#config-toc-close) and a dimming backdrop
+ *    (tap outside closes the drawer, not the whole modal);
 *  - picking a TOC entry scrolls to the section, marks the link active and
- *    collapses the nav;
+ *    collapses the drawer;
+ *  - the modal is full-screen (100dvh) and interactive controls are ≥44px;
 *  - the modal content does not overflow horizontally at 393px.
 *
 * Run:
@@ -20,6 +23,7 @@
 import { test, expect } from '@playwright/test';

 const MOBILE_MAX_WIDTH = 768;
+const MIN_TOUCH_TARGET = 44;

 async function boot(page) {
  await page.goto('/');
@@ -33,8 +37,8 @@ async function openConfigModal(page) {
  await expect(page.locator('#config-modal.active')).toBeVisible();
 }

-test.describe('Configurations modal on mobile (BUG-071)', () => {
-  test('hamburger reveals the table of contents', async ({ page, viewport }) => {
+test.describe('Configurations modal on mobile (BUG-071 + #114)', () => {
+  test('hamburger reveals the TOC as a fixed drawer', async ({ page, viewport }) => {
    test.skip((viewport?.width ?? 0) > MOBILE_MAX_WIDTH, 'Mobile viewport required');
    await boot(page);
    await openConfigModal(page);
@@ -45,9 +49,39 @@ test.describe('Configurations modal on mobile (BUG-071)', () => {

    await page.locator('#config-hamburger').click();
    await expect(page.locator('#config-nav')).toBeVisible();
+
+    // #114: the drawer is a fixed slide-over, not an inline top block.
+    const position = await page.locator('#config-nav').evaluate(
+      (el) => window.getComputedStyle(el).position,
+    );
+    expect(position).toBe('fixed');
+
+    // The modal carries the drawer-open class (backdrop contract).
+    await expect(page.locator('#config-modal')).toHaveClass(/config-toc-open/);
  });

-  test('picking a section scrolls to it and collapses the nav', async ({ page, viewport }) => {
+  test('close button and backdrop dismiss the drawer, not the modal', async ({ page, viewport }) => {
+    test.skip((viewport?.width ?? 0) > MOBILE_MAX_WIDTH, 'Mobile viewport required');
+    await boot(page);
+    await openConfigModal(page);
+
+    // Close button inside the drawer header.
+    await page.locator('#config-hamburger').click();
+    await expect(page.locator('#config-toc-close')).toBeVisible();
+    await page.locator('#config-toc-close').click();
+    await expect(page.locator('#config-nav')).toBeHidden();
+    await expect(page.locator('#config-modal.active')).toBeVisible();
+
+    // Backdrop tap closes the drawer first; the modal stays open.
+    // Click near the right edge of the modal (outside the left drawer).
+    await page.locator('#config-hamburger').click();
+    await expect(page.locator('#config-nav')).toBeVisible();
+    await page.locator('#config-modal').click({ position: { x: (viewport?.width ?? 393) - 8, y: 200 } });
+    await expect(page.locator('#config-nav')).toBeHidden();
+    await expect(page.locator('#config-modal.active')).toBeVisible();
+  });
+
+  test('picking a section scrolls to it and collapses the drawer', async ({ page, viewport }) => {
    test.skip((viewport?.width ?? 0) > MOBILE_MAX_WIDTH, 'Mobile viewport required');
    await boot(page);
    await openConfigModal(page);
@@ -57,7 +91,7 @@ test.describe('Configurations modal on mobile (BUG-071)', () => {
    await expect(link).toBeVisible();
    await link.click();

-    // Nav collapses on mobile after selection…
+    // Drawer collapses on mobile after selection…
    await expect(page.locator('#config-nav')).toBeHidden();
    // …the link is marked active…
    await expect(link).toHaveClass(/active/);
@@ -76,6 +110,37 @@ test.describe('Configurations modal on mobile (BUG-071)', () => {
      .toBeLessThanOrEqual(0);
  });

+  test('modal is full-screen and key controls meet the 44px touch target', async ({ page, viewport }) => {
+    test.skip((viewport?.width ?? 0) > MOBILE_MAX_WIDTH, 'Mobile viewport required');
+    await boot(page);
+    await openConfigModal(page);
+
+    // Full-screen: the modal container fills the viewport.
+    const container = page.locator('#config-modal .editor-container');
+    const box = await container.boundingBox();
+    expect(box).not.toBeNull();
+    expect(box.width).toBeGreaterThanOrEqual((viewport?.width ?? 0) - 2);
+    expect(box.height).toBeGreaterThanOrEqual((viewport?.height ?? 0) - 2);
+
+    // Header controls (hamburger + close) are ≥44px.
+    for (const sel of ['#config-hamburger', '#config-close']) {
+      const b = await page.locator(sel).boundingBox();
+      expect(b, `${sel} has no bounding box`).not.toBeNull();
+      expect(b.height, `${sel} height`).toBeGreaterThanOrEqual(MIN_TOUCH_TARGET);
+      expect(b.width, `${sel} width`).toBeGreaterThanOrEqual(MIN_TOUCH_TARGET);
+    }
+
+    // Backend Save row: buttons are ≥44px tall.
+    await page.locator('#config-hamburger').click();
+    await page.locator('#config-nav a[href="#cfg-backend-settings"]').click();
+    await expect(page.locator('#config-nav')).toBeHidden();
+    const saveBtn = page.locator('#cfg-save-backend');
+    await expect(saveBtn).toBeVisible();
+    const saveBox = await saveBtn.boundingBox();
+    expect(saveBox).not.toBeNull();
+    expect(saveBox.height).toBeGreaterThanOrEqual(MIN_TOUCH_TARGET);
+  });
+
  test('no horizontal overflow at 393px', async ({ page, viewport }) => {
    test.skip((viewport?.width ?? 0) > MOBILE_MAX_WIDTH, 'Mobile viewport required');
    await boot(page);
@@ -0,0 +1,142 @@
+/**
+ * E2E tests — XSS stocké : page publique de partage + lecteur markdown (#87 T4).
+ *
+ * Non-régression BUG-021 (sanitizer serveur du rendu markdown) et BUG-022
+ * (échappement `title`/frontmatter + neutralisation `</script>` sur `/s/{token}`).
+ * Chaque test arme un guetteur de dialogues `alert` : le moindre JS exécuté
+ * fait échouer le test, en plus des assertions DOM (contenu échappé, aucun
+ * attribut `on*` vivant).
+ *
+ * Run (local, instance de test port 2029, auth désactivée — cf. scripts/run-e2e-local.ps1) :
+ *   BASE_URL=http://localhost:2029 npx playwright test tests/e2e/xss.spec.js --project=chromium-desktop
+ */
+
+import { test, expect } from '@playwright/test';
+
+const BASE = process.env.BASE_URL || 'http://localhost:2029';
+const VAULT = 'TestVault';
+const XSS_FILE = 'e2e-xss-probe.md';
+const XSS_TITLE = '<img src=x onerror="window.__xss_title=1">';
+const XSS_BODY = [
+  '# Sonde XSS',
+  '',
+  '<img src=x onerror="window.__xss_body=1">',
+  '',
+  '<script>window.__xss_script=1</script>',
+  '',
+  '[xss](javascript:window.__xss_js=1)',
+].join('\n');
+
+async function api(request, method, path, data) {
+  const resp = await request.fetch(`${BASE}${path}`, {
+    method,
+    data,
+    headers: { 'Content-Type': 'application/json' },
+  });
+  if (!resp.ok()) {
+    throw new Error(`${method} ${path} → ${resp.status()} ${await resp.text()}`);
+  }
+  return resp.json();
+}
+
+async function precleanProbeFile(request) {
+  // Idempotence : un run précédent interrompu a pu laisser le fichier sonde.
+  await request.fetch(`${BASE}/api/file/${VAULT}?path=${encodeURIComponent(XSS_FILE)}`, {
+    method: 'DELETE',
+  }).catch(() => {});
+}
+
+async function armAlertTrap(page) {
+  const dialogs = [];
+  page.on('dialog', async (d) => {
+    dialogs.push(d.message());
+    await d.dismiss();
+  });
+  return dialogs;
+}
+
+async function openFile(page, vault, filePath) {
+  const treeItem = page.locator(`.tree-item[data-vault="${vault}"][data-path="${filePath}"]`);
+  if (!(await treeItem.count())) {
+    await page.locator(`.tree-item.vault-item[data-vault="${vault}"]`).first().click();
+    await treeItem.waitFor({ state: 'attached', timeout: 8000 });
+  }
+  await treeItem.dblclick({ timeout: 5000 });
+}
+
+test.describe('XSS — page publique de partage (/s/{token}, BUG-022)', () => {
+  test('un titre/frontmatter hostile est échappé et aucun script ne tourne', async ({ page, request }) => {
+    const dialogs = await armAlertTrap(page);
+
+    await precleanProbeFile(request);
+    await api(request, 'POST', `/api/file/${VAULT}`, {
+      path: XSS_FILE,
+      // Titre entre quotes simples YAML (les doubles quotes internes restent
+      // des caractères ordinaires et arrivent intactes au backend).
+      content: `---\ntitle: '${XSS_TITLE}'\n---\n\n${XSS_BODY}\n`,
+    });
+    const share = await api(request, 'POST', `/api/share/${VAULT}`, { path: XSS_FILE });
+
+    await page.goto(`${BASE}/s/${share.token}`);
+    await expect(page.locator('.share-banner')).toBeVisible({ timeout: 10000 });
+
+    // Le titre affiché est le texte brut (balise neutralisée), pas un <img> vivant.
+    await expect(page.locator('.toolbar-title')).toContainText('<img src=x', { timeout: 5000 });
+    expect(await page.locator('.toolbar-title img').count()).toBe(0);
+    expect(await page.locator('img[onerror]').count()).toBe(0);
+    // Les 2 <script> de la page sont son code statique : le JSON embarqué
+    // (`#raw-content`) doit être neutralisé (aucun `</script>` littéral).
+    const rawEmbedded = await page.evaluate(() => {
+      const el = document.getElementById('raw-content');
+      return { text: el ? el.textContent : null };
+    });
+    expect(rawEmbedded.text).not.toBeNull();
+    expect(rawEmbedded.text).not.toContain('</script');
+    expect(rawEmbedded.text).toContain('\\u003c');
+
+    // Aucun payload n'a tourné (titre, corps, bloc script, lien javascript:).
+    const flags = await page.evaluate(() => ({
+      title: window.__xss_title,
+      body: window.__xss_body,
+      script: window.__xss_script,
+      js: window.__xss_js,
+    }));
+    expect(flags).toEqual({ title: undefined, body: undefined, script: undefined, js: undefined });
+    expect(dialogs).toEqual([]);
+
+    await api(request, 'DELETE', `/api/share/${share.id}`);
+    await api(request, 'DELETE', `/api/file/${VAULT}?path=${encodeURIComponent(XSS_FILE)}`);
+  });
+});
+
+test.describe('XSS — lecteur markdown (BUG-021)', () => {
+  test('le HTML injecté dans une note est neutralisé à l\'affichage', async ({ page, request }) => {
+    const dialogs = await armAlertTrap(page);
+
+    await precleanProbeFile(request);
+    await api(request, 'POST', `/api/file/${VAULT}`, { path: XSS_FILE, content: `${XSS_BODY}\n` });
+
+    await page.goto(BASE);
+    await page.waitForFunction(() => window.__OBSIGATE_BOOTED === true, { timeout: 20000 });
+    await openFile(page, VAULT, XSS_FILE);
+
+    const content = page.locator('#content-area');
+    await expect(content).toContainText('Sonde XSS', { timeout: 10000 });
+
+    // Le sanitizer serveur a retiré les vecteurs : pas d'onerror, pas de script,
+    // pas de lien javascript: exécutable dans la zone de lecture.
+    expect(await content.locator('img[onerror]').count()).toBe(0);
+    expect(await content.locator('script').count()).toBe(0);
+    expect(await content.locator('a[href^="javascript:"]').count()).toBe(0);
+
+    const flags = await page.evaluate(() => ({
+      body: window.__xss_body,
+      script: window.__xss_script,
+      js: window.__xss_js,
+    }));
+    expect(flags).toEqual({ body: undefined, script: undefined, js: undefined });
+    expect(dialogs).toEqual([]);
+
+    await api(request, 'DELETE', `/api/file/${VAULT}?path=${encodeURIComponent(XSS_FILE)}`);
+  });
+});
@@ -104,6 +104,7 @@ async function main() {
  const bookslmMod = await import(pathToFileURL(path.join(JS_DIR, "bookslm.js")).href);
  const { BooksLM, MODE } = bookslmMod;
  const { collectOpenDocuments, documentsSignature } = bookslmMod;
+  const { t } = await import(pathToFileURL(path.join(JS_DIR, "i18n.js")).href);
  const { state } = await import(pathToFileURL(path.join(JS_DIR, "state.js")).href);

  // ── 1. Rewrite modal resolves with the typed instruction ──
@@ -213,8 +214,14 @@ async function main() {
    const { readFileSync } = await import("node:fs");
    const src = readFileSync(path.join(JS_DIR, "bookslm.js"), "utf-8");
    const apply = src.slice(src.indexOf("async _applyConfirmation"));
-    assert.match(apply, /payload:\s*msg\.payload\s*\?\s*\{[^\n]*\.\.\.msg\.payload[^\n]*\}\s*:\s*null/,
-      "continuation must inherit the original request payload (no null payload)");
+    // BUG-075: the whole batch is approved at once and the continuation keeps
+    // streaming into the SAME message (its `payload` stays available, so the
+    // BUG-046 null-payload regression cannot reappear).
+    assert.match(apply, /confirm_all:\s*true/, "global approval flag sent");
+    assert.match(apply, /await this\._streamResponse\(resp, msg, payload\)/,
+      "resume streams into the original message (payload preserved)");
+    assert.doesNotMatch(apply, /this\._messages\.push\(continuation\)/,
+      "no fragmented continuation message per approval");
    assert.match(apply, /await this\._responseError\(resp\)/,
      "resume path must format non-OK responses via _responseError");
  });
@@ -550,6 +557,50 @@ async function main() {
      assert.ok(summary.getAttribute("aria-label"), "the state is announced to screen readers");
    });

+    await test("the steps header previews the first action and counts actions only (BUG-074)", () => {
+      const b = new BooksLM();
+      // Two reasoning notes + one action → the header counts 1 action and
+      // previews it; the notes must not inflate the counter.
+      const calls = [
+        { name: "", ok: true, step: { key: "thought", params: { value: "je réfléchis" } } },
+        { name: "create_file", ok: true, step: { key: "file_create", params: { value: "a.md" } } },
+        { name: "", ok: true, step: { key: "thought", params: { value: "encore" } } },
+      ];
+      const trace = b._renderToolActivity(calls, {}, false);
+      const summary = trace.querySelector("summary");
+      assert.equal(
+        summary.querySelector(".bookslm-steps-label").textContent,
+        t("ai.steps_count", { count: 1 }),
+        "only actions are counted",
+      );
+      const title = summary.querySelector(".bookslm-steps-title");
+      assert.ok(title, "the first action is previewed in the collapsed header");
+      assert.ok(title.textContent.startsWith("— "), "preview is prefixed with a dash");
+      assert.ok(title.textContent.includes(b._stepText(calls[1])),
+        "preview shows the first action's label");
+      // Several actions → plural label.
+      const two = b._renderToolActivity([
+        { name: "create_file", ok: true, step: { key: "file_create", params: { value: "a.md" } } },
+        { name: "create_directory", ok: true, step: { key: "dir_create", params: { value: "d" } } },
+      ], {}, false);
+      assert.equal(
+        two.querySelector(".bookslm-steps-label").textContent,
+        t("ai.steps_count_plural", { count: 2 }),
+        "plural for several actions",
+      );
+    });
+
+    await test("_actionStepCount ignores reasoning notes (BUG-074)", () => {
+      const b = new BooksLM();
+      assert.equal(b._actionStepCount([
+        { step: { key: "thought" } },
+        { step: { key: "file_create" } },
+      ]), 1, "only the action is counted");
+      assert.equal(b._actionStepCount([{ step: { key: "thought" } }]), 1,
+        "a thoughts-only block still shows 1, never 0");
+      assert.equal(b._actionStepCount([]), 0);
+    });
+
    await test("reasoning notes become « Réflexion » sub-sections, open state kept", () => {
      const b = new BooksLM();
      const msg = {};
@@ -1206,14 +1257,119 @@ async function main() {
    assert.equal(msg.confirmation, null, "confirmation resolved");
    assert.ok(posted, "resumed via /agent");
    assert.equal(posted.confirm.error.tool, "edit_file");
+    assert.equal(posted.confirm_all, true, "BUG-075: global approval flag sent");
    assert.deepEqual(posted.confirm_messages, [{ role: "system", content: "s" }]);
+    // BUG-074: the continuation stays in the same message (cumulative steps).
+    assert.equal(b._messages.length, 1, "no fragmented continuation message");
    const cont = b._messages[b._messages.length - 1];
+    assert.equal(cont, msg, "streams into the original message");
    assert.equal(cont.content, "Fait.");
    assert.equal(cont.toolCalls.length, 1, "tool trace captured");
    b._panel.remove();
    localStorage.clear();
  });

+  await test("a batch confirmation lists every action and offers one approval (BUG-075)", () => {
+    const b = new BooksLM();
+    b._panel = b._render();
+    document.body.appendChild(b._panel);
+    b._fillConfirmationDiff = async () => {};
+    const msg = {
+      role: "assistant",
+      content: "",
+      confirmation: {
+        pending: {
+          error: { tool: "create_file", arguments: { vault: "V", path: "a.md" }, id: "1" },
+          actions: [
+            { id: "1", tool: "create_directory", step: { key: "dir_create", params: { value: "proj" } }, arguments: { vault: "V", path: "proj" } },
+            { id: "2", tool: "create_file", step: { key: "file_create", params: { value: "proj/a.md" } }, arguments: { vault: "V", path: "proj/a.md", content: "x" } },
+          ],
+        },
+        messages: [],
+      },
+    };
+    const card = b._renderConfirmationCard(msg);
+    const rows = card.querySelectorAll(".bookslm-confirm-action");
+    assert.equal(rows.length, 2, "one row per pending action");
+    assert.ok(
+      rows[0].querySelector("summary").textContent.includes(
+        b._stepText({ step: { key: "dir_create", params: { value: "proj" } }, name: "create_directory" }),
+      ),
+      "each row shows the action's human label",
+    );
+    const apply = card.querySelector(".bookslm-action-apply");
+    assert.equal(apply.textContent, t("ai.action_apply_all", { count: 2 }),
+      "a single global approval button");
+    b._panel.remove();
+  });
+
+  await test("single-action confirmation keeps the legacy Apply label (BUG-075)", () => {
+    const b = new BooksLM();
+    b._panel = b._render();
+    document.body.appendChild(b._panel);
+    b._fillConfirmationDiff = async () => {};
+    const msg = {
+      role: "assistant",
+      content: "",
+      confirmation: {
+        pending: { error: { tool: "edit_file", arguments: { vault: "V", path: "a.md", content: "x" }, id: "1" } },
+        messages: [],
+      },
+    };
+    const card = b._renderConfirmationCard(msg);
+    assert.equal(card.querySelectorAll(".bookslm-confirm-action").length, 0,
+      "no batch list for a single action");
+    assert.equal(card.querySelector(".bookslm-action-apply").textContent, t("ai.action_apply"));
+    b._panel.remove();
+  });
+
+  await test("the send button doubles as a Stop control while running (BUG-077)", () => {
+    const b = new BooksLM();
+    b._panel = b._render();
+    document.body.appendChild(b._panel);
+    const btn = b._panel.querySelector(".bookslm-btn-send");
+    b._syncSendButton();
+    assert.equal(btn.querySelector("i").getAttribute("data-lucide"), "arrow-up");
+    assert.ok(!btn.classList.contains("is-stopping"), "idle: normal send button");
+
+    let aborted = false;
+    b._isLoading = true;
+    b._abortCtrl = { abort: () => { aborted = true; } };
+    b._syncSendButton();
+    assert.ok(btn.classList.contains("is-stopping"), "stop state applied while running");
+    assert.equal(btn.querySelector("i").getAttribute("data-lucide"), "square");
+    btn.click();
+    assert.ok(aborted, "clicking while running aborts the request");
+    b._isLoading = false;
+    b._panel.remove();
+  });
+
+  await test("_markStopped appends a visible stop marker (BUG-077)", () => {
+    const b = new BooksLM();
+    const msg = { content: "Début de réponse" };
+    b._markStopped(msg);
+    assert.ok(msg.content.includes("⏹"), "marker present");
+    assert.ok(msg.content.startsWith("Début de réponse"), "partial answer kept");
+    assert.ok(!msg.content.includes("⏹\n"), "marker separated from the answer");
+    const empty = { content: "" };
+    b._markStopped(empty);
+    assert.ok(empty.content.includes("⏹"));
+    assert.ok(!empty.content.startsWith("\n"), "no leading blank line for an empty answer");
+  });
+
+  await test("document writes notify the viewer; path-less tools do not (BUG-076)", () => {
+    const b = new BooksLM();
+    const seen = [];
+    const handler = (e) => seen.push(e.detail);
+    window.addEventListener("obsigate:file-written", handler);
+    b._notifyFileWritten({ name: "create_xlsx", ok: true, arguments: { vault: "V", path: "a.xlsx" } });
+    b._notifyFileWritten({ name: "edit_file", ok: false, arguments: { vault: "V", path: "b.md" } });
+    b._notifyFileWritten({ name: "replace_in_files", ok: true, arguments: { vault: "V" } });
+    window.removeEventListener("obsigate:file-written", handler);
+    assert.equal(seen.length, 1, "only the successful path-bearing write notifies");
+    assert.equal(seen[0].path, "a.xlsx");
+  });
+
  // ── 29. Resizable panel bounds and persistence (#81) ──
  await test("panel width is clamped and persisted", async () => {
    localStorage.clear();
@@ -1,6 +1,6 @@
 #!/usr/bin/env node
 /**
- * ObsiGate — Configurations modal mobile usability non-regression tests (BUG-071).
+ * ObsiGate — Configurations modal mobile usability tests (BUG-071 + #114).
 *
 * Static checks (no jsdom needed — runs in the "Frontend unit tests" CI step):
 *  - BUG-071a: #config-nav shared the .help-nav rule that hides it below
@@ -18,8 +18,16 @@
 *    style.css must stack/wrap them below 768px with 44px touch targets.
 *  - BUG-071d: every #config-nav link target must exist (dead-anchor guard,
 *    same class of bug as BUG-067 for the help modal).
- *  - BUG-071e: data-i18n-attr supports several "attr:key" pairs (";"-
+ *  - BUG-071e: data-i18n-attr supports several "attr:key" pairs (";"
 *    separated) so the toggle carries translated title AND aria-label.
+ *  - #114a: the TOC is a left slide-over drawer (position: fixed) opened by
+ *    .config-toc-open on #config-modal, with a backdrop (::before) and a
+ *    close button (#config-toc-close).
+ *  - #114b: the modal is full-screen (100dvh), inputs are ≥16px anti-zoom
+ *    with 44px min-height, buttons are 44px touch targets, the backend Save
+ *    row is sticky, and the MFA recovery list is single-column on mobile.
+ *  - #114i18n: dead settings.* keys purged, settings.explorer and
+ *    config.toc_close present in FR and EN, settings.tabs translated in FR.
 *
 * Usage: node tests/frontend/config-mobile.test.mjs
 */
@@ -82,12 +90,17 @@ test("config.js — TOC links smooth-scroll, mark active, collapse on mobile", (

 test("config.js — TOC display reset when the modal opens", () => {
  assert.match(configJs, /configNavOnOpen[\s\S]{0,120}?style\.display = ''/, "stale inline display would stick across sessions");
+  assert.match(configJs, /modal\.classList\.remove\("config-toc-open"\)/,
+    "the drawer-open class (backdrop) must be cleared on open");
 });

 // ── BUG-071c: mobile CSS ────────────────────────────────────────────────────
-test("style.css — config TOC becomes a capped top block on mobile", () => {
+test("style.css — config TOC becomes a fixed drawer on mobile", () => {
  assert.match(css, /#config-modal #config-nav/, "no mobile rule scoped to #config-modal #config-nav");
-  assert.match(css, /#config-modal #config-nav[\s\S]{0,400}?max-height/, "the opened TOC must be height-capped so content stays reachable");
+  assert.match(css, /#config-modal #config-nav[\s\S]{0,400}?position: fixed/,
+    "the TOC must be a fixed slide-over drawer on mobile");
+  assert.match(css, /#config-modal #config-nav[\s\S]{0,400}?max-height/,
+    "the drawer must be height-capped so content stays reachable");
 });

 test("style.css — two-column config grids stack on mobile", () => {
@@ -124,6 +137,136 @@ test("i18n.js — data-i18n-attr supports several attr:key pairs", () => {
  assert.match(i18nJs, /el\.setAttribute\(attr, t\(key\)\)/, "each pair must set its attribute");
 });

+// ── #114a: drawer, backdrop, close button ───────────────────────────────────
+test("index.html — #config-toc-close exists inside the TOC header", () => {
+  const nav = indexHtml.match(/<nav class="help-nav" id="config-nav">([\s\S]*?)<\/nav>/);
+  assert.ok(nav, "#config-nav not found");
+  assert.match(nav[1], /id="config-toc-close"/, "no #config-toc-close in the TOC — no way to dismiss the drawer");
+  assert.match(nav[1], /config\.toc_close/, "the close button label must use the i18n key config.toc_close");
+});
+
+test("i18n — config.toc_close exists in FR and EN", () => {
+  assert.ok(fr["config.toc_close"], "fr.json missing config.toc_close");
+  assert.ok(en["config.toc_close"], "en.json missing config.toc_close");
+  assert.notEqual(fr["config.toc_close"], "config.toc_close", "FR value must be translated");
+  assert.notEqual(en["config.toc_close"], "config.toc_close", "EN value must be translated");
+});
+
+test("config.js — drawer open class + close button + backdrop + Escape", () => {
+  assert.match(configJs, /classList\.toggle\("config-toc-open"/,
+    "_setConfigNav must toggle .config-toc-open on the modal (backdrop + drawer CSS)");
+  assert.match(configJs, /getElementById\("config-toc-close"\)/,
+    "no binding on #config-toc-close");
+  assert.match(configJs, /config-toc-open[\s\S]{0,200}?_setConfigNav\(false\)/,
+    "a backdrop tap must close the drawer first, not the whole modal");
+  assert.match(configJs, /Escape[\s\S]{0,200}?config-toc-open[\s\S]{0,120}?_setConfigNav\(false\)/,
+    "Escape must close the drawer first, then the modal");
+  assert.match(configJs, /closeConfigModal[\s\S]{0,200}?classList\.remove\("config-toc-open"\)/,
+    "closeConfigModal must never leave the backdrop class behind");
+});
+
+test("style.css — drawer backdrop via .config-toc-open::before", () => {
+  assert.match(css, /#config-modal\.config-toc-open::before/,
+    "no backdrop pseudo-element for the open drawer");
+  assert.match(css, /#config-modal\.config-toc-open::before[\s\S]{0,200}?z-index: 35/,
+    "the backdrop must sit above the content and below the drawer (z-index 40)");
+  assert.match(css, /#config-modal\.config-toc-open #config-nav/,
+    "the open drawer must be forced visible via the modal class");
+});
+
+test("style.css — .help-toc-close hidden on desktop, visible in the config drawer", () => {
+  assert.match(css, /\.help-toc-close\s*\{[^}]*display:\s*none/,
+    ".help-toc-close must be hidden by default (desktop nav is always visible)");
+  assert.match(css, /#config-modal \.help-toc-close\s*\{[^}]*display:\s*inline-flex/,
+    "#config-modal .help-toc-close must show on mobile");
+});
+
+// ── #114b: full-screen, anti-zoom, touch targets, sticky save ───────────────
+test("style.css — config modal goes full-screen with 100dvh on mobile", () => {
+  assert.match(css, /#config-modal \.editor-container[\s\S]{0,300}?100dvh/,
+    "the modal must fill the dynamic viewport (mobile browser chrome)");
+  assert.match(css, /#config-modal[\s\S]{0,200}?padding:\s*0/,
+    "the modal must drop its outer padding on mobile");
+});
+
+test("style.css — inputs are ≥16px with 44px min-height (anti-zoom iOS)", () => {
+  assert.match(css, /#config-modal \.config-input[\s\S]{0,200}?font-size:\s*16px/,
+    "config inputs must be ≥16px to stop iOS auto-zoom");
+  assert.match(css, /#config-modal \.config-input[\s\S]{0,200}?min-height:\s*44px/,
+    "config inputs need a 44px touch target");
+  assert.match(css, /#config-modal \.config-select[\s\S]{0,200}?font-size:\s*16px/,
+    "config selects must be ≥16px to stop iOS auto-zoom");
+});
+
+test("style.css — primary buttons are 44px touch targets", () => {
+  // The shared button block lists many selectors; match from the block start
+  // (first #config-modal .config-btn-save) to the min-height declaration.
+  const buttonBlock = css.match(/#config-modal \.config-btn-save,[\s\S]{0,600}?\{[^}]*min-height:\s*44px/);
+  assert.ok(buttonBlock, ".config-btn-save needs a 44px touch target");
+  for (const cls of ["config-btn-secondary", "config-btn-danger", "config-btn-sm"]) {
+    assert.match(css, new RegExp(`#config-modal \\.${cls}`), `#${cls} has no #114 mobile rule`);
+  }
+  assert.match(css, /#config-modal \.config-actions-row[\s\S]{0,400}?min-height:\s*44px/,
+    "buttons inside the sticky Save row need a 44px touch target");
+});
+
+test("style.css — backend Save row is sticky at the bottom of its section", () => {
+  assert.match(css, /#config-modal \.config-actions-row\s*\{[^}]*position:\s*sticky/,
+    "the Save row must stick to the bottom while scrolling the backend section");
+  assert.match(css, /#config-modal \.config-actions-row[\s\S]{0,300}?flex-direction:\s*column/,
+    "the Save row must stack vertically on mobile");
+  assert.match(css, /#config-modal \.config-actions-row[\s\S]{0,300}?env\(safe-area-inset-bottom/,
+    "the sticky Save row must clear the home indicator");
+});
+
+test("style.css — MFA recovery list single-column + verify section wraps", () => {
+  assert.match(css, /#config-modal \.mfa-recovery-list\s*\{[^}]*grid-template-columns:\s*1fr/,
+    "recovery codes must be a single column on mobile");
+  assert.match(css, /#config-modal \.mfa-verify-section[\s\S]{0,200}?flex-wrap:\s*wrap/,
+    "the MFA verify row must wrap instead of overflowing");
+  assert.match(css, /#config-modal \.mfa-code-input[\s\S]{0,300}?width:\s*100%/,
+    "the MFA code input must be full-width on mobile");
+});
+
+test("index.html — .config-actions-row lives inside #cfg-backend-settings", () => {
+  const section = indexHtml.match(/<section[^>]*id="cfg-backend-settings"[\s\S]*?<\/section>/);
+  assert.ok(section, "#cfg-backend-settings section not found");
+  assert.match(section[0], /class="config-actions-row"/,
+    ".config-actions-row must be inside the backend section (sticky footer contract)");
+});
+
+// ── #114i18n: dead keys purged, new keys added ──────────────────────────────
+test("i18n — dead settings.* keys are purged from FR and EN", () => {
+  const dead = ["settings.backend", "settings.backend_hint", "settings.restart_badge",
+    "settings.save", "settings.plugins"];
+  for (const key of dead) {
+    assert.equal(fr[key], undefined, `fr.json still has dead key ${key}`);
+    assert.equal(en[key], undefined, `en.json still has dead key ${key}`);
+  }
+});
+
+test("i18n — settings.explorer exists in FR and EN", () => {
+  assert.ok(fr["settings.explorer"], "fr.json missing settings.explorer");
+  assert.ok(en["settings.explorer"], "en.json missing settings.explorer");
+  assert.notEqual(fr["settings.explorer"], "settings.explorer", "FR value must be translated");
+  assert.notEqual(en["settings.explorer"], "settings.explorer", "EN value must be translated");
+});
+
+test("i18n — settings.tabs is translated in FR (was the English word \"Tabs\")", () => {
+  assert.equal(fr["settings.tabs"], "Onglets", "fr.json settings.tabs must be French");
+  assert.equal(en["settings.tabs"], "Tabs", "en.json settings.tabs must stay English");
+});
+
+test("index.html — #mt-explorer label carries data-i18n=settings.explorer", () => {
+  assert.match(indexHtml, /id="mt-explorer"[\s\S]{0,400}?data-i18n="settings\.explorer"/,
+    "the explorer toolbar button must be translated via settings.explorer");
+});
+
+test("index.html — no dead container #plugins-settings-container", () => {
+  assert.ok(!indexHtml.includes("plugins-settings-container"),
+    "#plugins-settings-container was a dead div — plugins render into #cfg-plugins");
+});
+
 if (process.exitCode) {
  console.error("\nConfig mobile tests FAILED");
 } else {
@@ -333,8 +333,13 @@ test("bookslm.js reports the edited document and the assistant writes", () => {
  assert.match(bookslmSrc, /this\._notifyFileWritten\(data\);/);
  const notify = bookslmSrc.match(/_notifyFileWritten\(data\) \{([\s\S]*?)\n  \}/);
  assert.ok(notify, "_notifyFileWritten not found");
-  for (const tool of ["edit_file", "append_to_file", "create_file", "restore_backup"]) {
-    assert.ok(notify[1].includes(`'${tool}'`), `${tool} missing from the write tools`);
+  // BUG-076: the write-tool list is a module-level set (documents included).
+  assert.match(notify[1], /FILE_WRITE_TOOLS\.has\(data\.name\)/);
+  const writeSet = bookslmSrc.match(/const FILE_WRITE_TOOLS = new Set\(\[([\s\S]*?)\]\);/);
+  assert.ok(writeSet, "FILE_WRITE_TOOLS not found");
+  for (const tool of ["edit_file", "append_to_file", "create_file", "restore_backup",
+                      "create_xlsx", "create_docx", "create_csv", "create_pdf"]) {
+    assert.ok(writeSet[1].includes(`'${tool}'`), `${tool} missing from the write tools`);
  }
  assert.match(notify[1], /new CustomEvent\('obsigate:file-written'/);
 });
@@ -22,6 +22,7 @@ const viewer = readFileSync(path.join(ROOT, "frontend", "js", "viewer.js"), "utf
 const utils = readFileSync(path.join(ROOT, "frontend", "js", "utils.js"), "utf8");
 const css = readFileSync(path.join(ROOT, "frontend", "style.css"), "utf8");
 const main = readFileSync(path.join(ROOT, "backend", "main.py"), "utf8");
+const filesRead = readFileSync(path.join(ROOT, "backend", "routers", "files_read.py"), "utf8");

 function test(label, fn) {
  try {
@@ -186,8 +187,9 @@ test("utils.js maps image extensions to the Lucide 'image' icon", () => {
 });

 test("backend api_file_view points <img> at /api/image", () => {
-  assert.match(main, /img_url = f"\/api\/image\//);
-  assert.match(main, /f'<img src="\{img_url\}"/);
+  // #85 T6a : le handler vit dans backend/routers/files_read.py
+  assert.match(filesRead, /img_url = f"\/api\/image\//);
+  assert.match(filesRead, /f'<img src="\{img_url\}"/);
 });

 if (process.exitCode) {
@@ -24,6 +24,9 @@ const utils = readFileSync(path.join(ROOT, "frontend", "js", "utils.js"), "utf8"
 const css = readFileSync(path.join(ROOT, "frontend", "style.css"), "utf8");
 const sw = readFileSync(path.join(ROOT, "frontend", "sw.js"), "utf8");
 const main = readFileSync(path.join(ROOT, "backend", "main.py"), "utf8");
+const filesMedia = readFileSync(path.join(ROOT, "backend", "routers", "files_media.py"), "utf8");
+const filesRead = readFileSync(path.join(ROOT, "backend", "routers", "files_read.py"), "utf8");
+const routerHelpers = readFileSync(path.join(ROOT, "backend", "routers", "helpers.py"), "utf8");
 const fr = readFileSync(path.join(ROOT, "frontend", "locales", "fr.json"), "utf8");
 const en = readFileSync(path.join(ROOT, "frontend", "locales", "en.json"), "utf8");

@@ -177,9 +180,11 @@ test("service worker never caches streamed media", () => {

 // ── Static checks: backend ─────────────────────────────────────────────────
 test("backend exposes /api/media and the shared Range helper", () => {
-  assert.match(main, /@app\.get\("\/api\/media\/\{vault_name\}"/);
-  assert.match(main, /def _stream_file_with_range\(/);
-  assert.match(main, /is_audio\(ext\) or is_video\(ext\)/);
+  // #85 T6c : routes dans backend/routers/files_media.py, helper Range partagé
+  // dans backend/routers/helpers.py, branche audio/vidéo dans files_read.py
+  assert.match(filesMedia, /@router\.get\("\/api\/media\/\{vault_name\}"/);
+  assert.match(routerHelpers, /def stream_file_with_range\(/);
+  assert.match(filesRead, /is_audio\(ext\) or is_video\(ext\)/);
 });

 if (process.exitCode) {
@@ -16,7 +16,7 @@
 */

 import { strict as assert } from "node:assert";
-import { readFileSync } from "node:fs";
+import { existsSync, readFileSync } from "node:fs";
 import path from "node:path";
 import { fileURLToPath } from "node:url";

@@ -136,11 +136,46 @@ test("style.css — preview circle and sidebar image rules exist", () => {
  assert.match(css, /\.sidebar-user-avatar-img\s*\{/, "no .sidebar-user-avatar-img rule");
 });

+// ── #117: preset avatar gallery ─────────────────────────────────────────────
+test("index.html — #cfg-profile exposes 12 bundled preset avatars", () => {
+  const section = indexHtml.match(/<section[^>]*id="cfg-profile"[\s\S]*?<\/section>/);
+  assert.ok(section, "#cfg-profile section not found");
+  const html = section[0];
+  assert.match(html, /id="profile-avatar-presets"/, "preset gallery container missing");
+  const buttons = [...html.matchAll(/class="profile-avatar-preset"[^>]*data-avatar="([^"]+)"/g)];
+  assert.equal(buttons.length, 12, `expected 12 preset avatars, found ${buttons.length}`);
+  const names = buttons.map((m) => m[1]);
+  assert.equal(new Set(names).size, 12, "preset avatar names must be unique");
+  for (const name of names) {
+    const rel = path.join(ROOT, "frontend", "icons", "avatar", name);
+    assert.ok(existsSync(rel), `missing avatar file: ${rel}`);
+    assert.ok(html.includes(`/static/icons/avatar/${name}`),
+      `#${name} must be served from /static/icons/avatar/`);
+  }
+});
+
+test("config.js — preset avatars reuse the upload pipeline", () => {
+  assert.match(configJs, /profile-avatar-presets/, "preset container lookup missing");
+  assert.match(configJs, /\.profile-avatar-preset/, "preset button selector missing");
+  assert.match(configJs, /\/static\/icons\/avatar\//, "preset image base URL missing");
+  assert.match(configJs, /_resizeAvatarFile\(blob\)/, "preset must go through the resize pipeline");
+  assert.match(configJs, /_patchProfileAvatar\(dataUrl\)/, "preset must be persisted via PATCH");
+  assert.match(configJs, /obsigate-avatar-preset/, "active preset marker missing");
+  assert.match(configJs, /markActivePreset/, "active preset highlight missing");
+});
+
+test("style.css — preset avatar rules exist", () => {
+  assert.match(css, /\.profile-avatar-presets\s*\{/, "no .profile-avatar-presets rule");
+  assert.match(css, /\.profile-avatar-preset\s*\{/, "no .profile-avatar-preset rule");
+  assert.match(css, /\.profile-avatar-preset\.active\s*\{/, "no active preset rule");
+});
+
 // ── #113c: i18n + backend ───────────────────────────────────────────────────
 test("i18n — avatar keys exist in FR and EN", () => {
  const keys = [
    "config.avatar_label",
    "config.avatar_hint",
+    "config.avatar_presets_label",
    "config.avatar_choose",
    "config.avatar_remove",
    "config.avatar_updated",
@@ -111,6 +111,30 @@ test("style.css — .action-sep rule exists", () => {
  assert.match(css, /\.file-actions \.action-sep\s*\{[^}]*background:[^;]*;/);
 });

+// ── #115 : barre d'outils collante au défilement ─────────────────────────
+test("viewer.js — action bar wrapped in a sticky .file-toolbar", () => {
+  assert.match(viewer, /class:\s*"file-toolbar"[\s\S]{0,120}file-actions/,
+    "the document action bar must live in a .file-toolbar wrapper");
+});
+
+test("popout.html — action bar wrapped in a .file-toolbar", () => {
+  assert.match(popout, /className\s*=\s*"file-toolbar"/,
+    "popout action bar must live in a .file-toolbar wrapper");
+});
+
+test("style.css — .file-toolbar is pinned to the top while scrolling", () => {
+  const m = css.match(/\.file-toolbar\s*\{([\s\S]*?)\}/);
+  assert.ok(m, ".file-toolbar rule missing");
+  assert.match(m[1], /position:\s*sticky/, ".file-toolbar must be sticky");
+  assert.match(m[1], /top:\s*0/, ".file-toolbar must pin to the top");
+  assert.match(m[1], /background:/, ".file-toolbar needs an opaque background");
+});
+
+test("style.css — reading mode hides the sticky toolbar", () => {
+  assert.match(css, /body\.reading-mode\s+\.file-toolbar\s*[,{]/,
+    "reading mode must hide .file-toolbar");
+});
+
 if (process.exitCode) {
  console.error("\nToolbar order tests FAILED");
 } else {
@@ -284,6 +284,28 @@ function testSidebarUserSection() {
  console.log('  ✓ header trimmed + sidebar account section (#112)');
 }

+// ── Test syntax highlighting follows the theme mode (BUG-078) ──────────────
+function testSyntaxHighlightTheme() {
+  const themes = readFileSync(join(JS_DIR, 'themes.js'), 'utf-8');
+  const ui = readFileSync(join(JS_DIR, 'ui.js'), 'utf-8');
+
+  // themes.js must swap the highlight.js stylesheets based on the *mode*.
+  const applyTheme = themes.match(/function applyTheme\(themeKey, mode\)\s*\{([\s\S]*?)\n\}/);
+  assert.ok(applyTheme, 'themes.js applyTheme not found');
+  assert.match(applyTheme[1], /hljs-theme-dark/, 'applyTheme must toggle the dark hljs sheet');
+  assert.match(applyTheme[1], /hljs-theme-light/, 'applyTheme must toggle the light hljs sheet');
+  assert.match(applyTheme[1], /mode === 'dark'|mode === "dark"/, 'sheet choice must key on the mode');
+
+  // ui.js must resolve the persisted *mode*, never treat the theme key as one.
+  assert.match(ui, /obsigate-theme-mode/, 'ui.js must read the persisted theme mode');
+  assert.doesNotMatch(
+    ui,
+    /darkSheet\.disabled\s*=\s*theme !== "dark"[\s\S]{0,120}lightSheet\.disabled\s*=\s*theme !== "light"/,
+    'ui.js must not compare the theme key to "dark"/"light" (BUG-078 regression)',
+  );
+  console.log('  ✓ syntax highlighting follows the theme mode (BUG-078)');
+}
+
 // ── Run all tests ──────────────────────────────────────────────────────────
 async function main() {
  let passed = 0, failed = 0;
@@ -300,6 +322,7 @@ async function main() {
    ['ai-fab module exports', testAIFabModuleExports],
    ['config TOC icons', testConfigTocIcons],
    ['sidebar user section', testSidebarUserSection],
+    ['syntax highlight theme', testSyntaxHighlightTheme],
  ];

  for (const [name, fn] of tests) {
@@ -281,12 +281,13 @@ class TestConfirmationResume:
        assert assistant_tool_msgs[0]["tool_calls"][0]["id"] == "call_9"

    @pytest.mark.asyncio
-    async def test_confirmation_with_parallel_calls_keeps_conversation_valid(self, monkeypatch):
-        """BUG-050: pausing on one tool call of a batch must answer the others.
+    async def test_confirmation_batches_all_writes_and_keeps_conversation_valid(self, monkeypatch):
+        """BUG-075 (was BUG-050): one pause batches every mutating call.

        The assistant message lists every tool call of the response, so the
        provider rejects the resumed turn when a ``tool_call_id`` has no tool
-        result (the "create a folder and a file inside" scenario).
+        result. Mutating calls of the batch are now all pending (one approval
+        applies them together); no dangling id remains.
        """
        _register(monkeypatch, "_write", lambda ctx, params: {"done": params}, risk=ToolRisk.WRITE)

@@ -297,14 +298,15 @@ class TestConfirmationResume:
        paused = await run_agent([{"role": "user", "content": "write both"}], ctx=_ctx(), llm=llm1)
        assert paused.stopped == STOP_CONFIRMATION_REQUIRED
        assert paused.pending["error"]["id"] == "1"
-
-        # The call that was not reached is answered right away; the pending one
-        # gets its result on resume, when the user applies it.
+        # Both mutating calls are batched into the single confirmation.
+        actions = paused.pending["actions"]
+        assert [a["id"] for a in actions] == ["1", "2"]
+        assert actions[0]["step"]["key"] == "generic"
+        # Nothing is executed nor deferred while waiting for the approval.
        answered = {m["tool_call_id"] for m in paused.messages if m.get("role") == "tool"}
-        assert "2" in answered
-        assert "1" not in answered
+        assert answered == set()

-        # Resume: the pending call is applied, the next turn stays valid.
+        # Resume: both pending calls are applied, the next turn stays valid.
        llm2 = ScriptedLLM([LLMResponse(content="ok")])
        resumed = await run_agent(
            [{"role": "user", "content": "write both"}],
@@ -315,8 +317,8 @@ class TestConfirmationResume:
        )
        assert resumed.stopped == STOP_DONE
        assert resumed.content == "ok"
-        assert len(resumed.tool_calls) == 1
-        assert resumed.tool_calls[0].ok is True
+        assert [r.name for r in resumed.tool_calls] == ["_write", "_write"]
+        assert all(r.ok for r in resumed.tool_calls)
        # Before the resumed LLM call, every announced tool_call_id is answered.
        resumed_messages = llm2.calls[0]["messages"]
        assistant = next(
@@ -326,12 +328,31 @@ class TestConfirmationResume:
        announced = {tc["id"] for tc in assistant["tool_calls"]}
        answered = {m["tool_call_id"] for m in resumed_messages if m.get("role") == "tool"}
        assert announced <= answered
-        # The skipped call is flagged "deferred" so the model can re-issue it.
+        # No deferred result: the batched calls were approved, not skipped.
        deferred = [
            m for m in resumed_messages
            if m.get("role") == "tool" and json.loads(m["content"]).get("status") == "deferred"
        ]
-        assert [m["tool_call_id"] for m in deferred] == ["2"]
+        assert deferred == []
+
+    @pytest.mark.asyncio
+    async def test_confirmation_runs_read_calls_of_the_batch_immediately(self, monkeypatch):
+        """Only mutating calls are batched; read-only calls of the turn run now."""
+        _register(monkeypatch, "_write", lambda ctx, params: {"done": params}, risk=ToolRisk.WRITE)
+        _register(monkeypatch, "_read", lambda ctx, params: {"value": 1})
+
+        llm1 = ScriptedLLM([LLMResponse(tool_calls=[
+            ToolCall(id="1", name="_write", arguments={"x": 1}),
+            ToolCall(id="2", name="_read", arguments={}),
+            ToolCall(id="3", name="_write", arguments={"x": 3}),
+        ])])
+        paused = await run_agent([{"role": "user", "content": "write and read"}], ctx=_ctx(), llm=llm1)
+        assert paused.stopped == STOP_CONFIRMATION_REQUIRED
+        # The read ran while the two writes are pending.
+        assert [r.name for r in paused.tool_calls] == ["_read"]
+        assert [a["id"] for a in paused.pending["actions"]] == ["1", "3"]
+        answered = {m["tool_call_id"] for m in paused.messages if m.get("role") == "tool"}
+        assert answered == {"2"}


 class TestAgentPermissions:
@@ -12,7 +12,8 @@ from __future__ import annotations
 import pytest
 from fastapi.testclient import TestClient

-from backend.main import _FALLBACK_MODELS, app
+from backend.main import app
+from backend.routers.config import _FALLBACK_MODELS  # ROADMAP #85 T7 — déménagé depuis backend.main

 #: Trimmed-down copy of what api.mistral.ai/v1/models really returns (BUG-044).
 MISTRAL_LIVE_PAYLOAD = {
@@ -28,11 +29,12 @@ MISTRAL_LIVE_PAYLOAD = {
@pytest.fixture
 def admin_client(tmp_path):
    """Minimal admin client for the /api/config/ai-models endpoint."""
-    from backend.auth.password import hash_password
    import json
    import os
    from pathlib import Path

+    from backend.auth.password import hash_password
+
    data_dir = tmp_path / "data"
    data_dir.mkdir()
    users = {
@@ -69,8 +71,9 @@ def admin_client(tmp_path):

    import backend.main
    backend.main._load_config = lambda: {"watcher_enabled": False}
-    from backend.indexer import build_index, index
    import asyncio
+
+    from backend.indexer import build_index, index
    for key in list(index.keys()):
        del index[key]
    loop = asyncio.new_event_loop()
@@ -232,9 +235,11 @@ class TestListModelsEndpoint:
        # in backend.main (which does `from backend.ai import ... get_ai_key`).
        import backend.ai as aimod
        import backend.main as bmain
+        import backend.routers.config as rconfig
        monkeypatch.setattr(aimod, "get_ai_key", lambda name: "fake-xiaomi-key")
        if hasattr(bmain, "get_ai_key"):
            monkeypatch.setattr(bmain, "get_ai_key", lambda name: "fake-xiaomi-key")
+        monkeypatch.setattr(rconfig, "get_ai_key", lambda name: "fake-xiaomi-key")

        captured = {}

@@ -316,9 +321,11 @@ class TestListModelsEndpoint:
        # Patch BOTH the source module AND the imported reference in backend.main
        import backend.ai as aimod
        import backend.main as bmain
+        import backend.routers.config as rconfig
        monkeypatch.setattr(aimod, "get_ai_key", lambda name: "fake-key")
        if hasattr(bmain, "get_ai_key"):
            monkeypatch.setattr(bmain, "get_ai_key", lambda name: "fake-key")
+        monkeypatch.setattr(rconfig, "get_ai_key", lambda name: "fake-key")

        import urllib.request as global_urllib_mod
        captured_urls = []
@@ -393,10 +400,12 @@ class TestDeclaredCapabilities:
        """main.py binds get_ai_key at import: patch that binding too."""
        import backend.ai as aimod
        import backend.main as bmain
+        import backend.routers.config as rconfig

        monkeypatch.setattr(aimod, "get_ai_key", lambda name: "fake-mistral-key")
        if hasattr(bmain, "get_ai_key"):
            monkeypatch.setattr(bmain, "get_ai_key", lambda name: "fake-mistral-key")
+        monkeypatch.setattr(rconfig, "get_ai_key", lambda name: "fake-mistral-key")

    def test_declared_vision_reaches_both_endpoints(self, admin_client, monkeypatch):
        self._fake_key(monkeypatch)
@@ -450,10 +459,12 @@ class TestDeclaredCapabilities:
        """No API key: the curated list must still answer correctly (offline)."""
        import backend.ai as aimod
        import backend.main as bmain
+        import backend.routers.config as rconfig

        monkeypatch.setattr(aimod, "get_ai_key", lambda name: None)
        if hasattr(bmain, "get_ai_key"):
            monkeypatch.setattr(bmain, "get_ai_key", lambda name: None)
+        monkeypatch.setattr(rconfig, "get_ai_key", lambda name: None)

        token = _login_admin(admin_client)
        resp = admin_client.get(
@@ -460,6 +460,39 @@ class TestConfig:
        # Should have some diagnostic info
        assert len(data) > 0

+    def test_diagnostics_concurrent_index_writes(self, client):
+        """Regression: word_index mutated while the handler iterates it raised
+        "dictionary changed size during iteration" -> 500."""
+        from backend.search import get_inverted_index
+
+        inv = get_inverted_index()
+        original = inv.word_index
+
+        class RaceDict(dict):
+            """dict whose .values() grows the dict mid-iteration, exactly like
+            the indexer writing from another thread."""
+            def values(self):
+                it = iter(dict.values(self))
+                first = next(it, _SENTINEL)
+                if first is _SENTINEL:
+                    return iter(())
+                self["__injected__"] = {"__injected_doc__": 1}
+
+                def gen():
+                    yield first
+                    yield from it  # raises RuntimeError: dict changed size
+                return gen()
+
+        _SENTINEL = object()
+        inv.word_index = RaceDict(original)
+        try:
+            resp = client.get("/api/diagnostics")
+            assert resp.status_code == 200, resp.text
+            assert "memory_estimate_mb" in resp.json()["inverted_index"]
+        finally:
+            inv.word_index = original
+            original.pop("__injected__", None)
+

 # ═══════════════════════════════════════════════════════════════════
 # Dashboard
@@ -556,30 +589,30 @@ class TestHumanizeMtime:
        pass

    def test_humanize_mtime_now(self):
-        from backend.main import humanize_mtime
+        from backend.services.recent import humanize_mtime  # ROADMAP #85 T8 — ne plus passer par backend.main
        import time
        assert "instant" in humanize_mtime(time.time())

    def test_humanize_mtime_minutes(self):
-        from backend.main import humanize_mtime
+        from backend.services.recent import humanize_mtime  # ROADMAP #85 T8 — ne plus passer par backend.main
        import time
        result = humanize_mtime(time.time() - 120)
        assert "min" in result

    def test_humanize_mtime_hours(self):
-        from backend.main import humanize_mtime
+        from backend.services.recent import humanize_mtime  # ROADMAP #85 T8 — ne plus passer par backend.main
        import time
        result = humanize_mtime(time.time() - 7200)
        assert "h" in result or "jour" in result

    def test_humanize_mtime_days(self):
-        from backend.main import humanize_mtime
+        from backend.services.recent import humanize_mtime  # ROADMAP #85 T8 — ne plus passer par backend.main
        import time
        result = humanize_mtime(time.time() - 172800)  # 2 days
        assert "j" in result

    def test_humanize_mtime_old(self):
-        from backend.main import humanize_mtime
+        from backend.services.recent import humanize_mtime  # ROADMAP #85 T8 — ne plus passer par backend.main
        import time
        result = humanize_mtime(time.time() - 86400 * 30)
        assert "202" in result or result  # Should show formatted date
@@ -591,44 +624,44 @@ class TestHumanizeMtime:

 class TestHeadingSlugify:
    def test_slugify_simple(self):
-        from backend.main import _heading_slugify
+        from backend.render import _heading_slugify  # ROADMAP #85 T9 — déménagé depuis backend.main
        assert _heading_slugify("Hello World") == "hello-world"

    def test_slugify_accented(self):
-        from backend.main import _heading_slugify
+        from backend.render import _heading_slugify  # ROADMAP #85 T9 — déménagé depuis backend.main
        result = _heading_slugify("Café Crème")
        assert "cafe" in result or "caf" in result

    def test_slugify_strips_symbols(self):
-        from backend.main import _heading_slugify
+        from backend.render import _heading_slugify  # ROADMAP #85 T9 — déménagé depuis backend.main
        result = _heading_slugify("Hello, World! Test?")
        assert result.startswith("hello")


 class TestRenderMarkdown:
    def test_render_basic(self):
-        from backend.main import _render_markdown
+        from backend.render import _render_markdown  # ROADMAP #85 T9 — déménagé depuis backend.main
        result = _render_markdown("# Hello\n\nThis is a test.", "TestVault")
        assert "<h1" in result
        assert "Hello" in result

    def test_render_with_code(self):
-        from backend.main import _render_markdown
+        from backend.render import _render_markdown  # ROADMAP #85 T9 — déménagé depuis backend.main
        result = _render_markdown("```python\nprint('hello')\n```", "TestVault")
        assert "code" in result or "highlight" in result

    def test_render_with_heading_ids(self):
-        from backend.main import _render_markdown
+        from backend.render import _render_markdown  # ROADMAP #85 T9 — déménagé depuis backend.main
        result = _render_markdown("# Title\n## Subtitle", "TestVault")
        assert "id=" in result

    def test_render_wikilink(self):
-        from backend.main import _render_markdown
+        from backend.render import _render_markdown  # ROADMAP #85 T9 — déménagé depuis backend.main
        result = _render_markdown("Link [[nonexistent.md]] here", "TestVault")
        assert "wikilink" in result

    def test_render_image_wikilink(self):
-        from backend.main import _render_markdown
+        from backend.render import _render_markdown  # ROADMAP #85 T9 — déménagé depuis backend.main
        result = _render_markdown("![[image.png]]", "TestVault")
        assert "img" in result or "image" in result or "wikilink" in result

@@ -676,31 +709,31 @@ class TestCheckVaultWritable:

 class TestConvertWikilinks:
    def test_convert_wikilink(self):
-        from backend.main import _convert_wikilinks
+        from backend.render import _convert_wikilinks  # ROADMAP #85 T9 — déménagé depuis backend.main
        # Missing wikilinks render as span.wikilink-missing
        result = _convert_wikilinks("See [[Introduction à Python]] for details", "TestVault")
        assert "Introduction" in result
        assert "wikilink" in result

    def test_convert_wikilink_with_alias(self):
-        from backend.main import _convert_wikilinks
+        from backend.render import _convert_wikilinks  # ROADMAP #85 T9 — déménagé depuis backend.main
        result = _convert_wikilinks("See [[file.md|a different name]] here", "TestVault")
        assert "a different name" in result

    def test_convert_wikilink_image(self):
-        from backend.main import _convert_wikilinks
+        from backend.render import _convert_wikilinks  # ROADMAP #85 T9 — déménagé depuis backend.main
        result = _convert_wikilinks("See ![[image.png]] here", "TestVault")
        assert "image" in result or "img" in result

    def test_convert_wikilink_anchor(self):
-        from backend.main import _convert_wikilinks
+        from backend.render import _convert_wikilinks  # ROADMAP #85 T9 — déménagé depuis backend.main
        result = _convert_wikilinks("[[#Section importante|voir section]]", "TestVault")
        assert 'href="#section-importante"' in result
        assert "wikilink-anchor" in result
        assert "voir section" in result

    def test_convert_wikilink_anchor_without_alias(self):
-        from backend.main import _convert_wikilinks
+        from backend.render import _convert_wikilinks  # ROADMAP #85 T9 — déménagé depuis backend.main
        result = _convert_wikilinks("[[#Claude Code]]", "TestVault")
        assert 'href="#claude-code"' in result
        assert "Claude Code" in result
@@ -708,7 +741,7 @@ class TestConvertWikilinks:

 class TestHeadingSlugifyHtmlStripping:
    def test_slugify_strips_html_tags(self):
-        from backend.main import _heading_slugify
+        from backend.render import _heading_slugify  # ROADMAP #85 T9 — déménagé depuis backend.main
        result = _heading_slugify('## 1. Agents installés localement <a href="#table-des-matieres">↩</a>')
        assert result == "1-agents-installes-localement"

@@ -1065,6 +1065,81 @@ class TestBooksLMAgentEndpoint:
        assert "C'est fait." in resp2.text
        assert "event: message" in resp2.text

+    def test_agent_confirmation_batches_actions_and_confirm_all(self, bookslm_client, monkeypatch):
+        """BUG-075: one confirmation lists every mutating call of the turn and
+        ``confirm_all`` authorizes the rest of the run without pausing again."""
+        import re
+
+        import backend.bookslm_routes as routes
+        from backend.ai_chat import LLMResponse, ToolCall
+        from backend.tools import registry
+        from backend.tools.api import ToolRisk
+        from backend.tools.registry import ToolSpec
+        from backend.tools.schemas import ListVaultsInput
+
+        calls = []
+
+        def handler(ctx, params):
+            calls.append(params)
+            return {"ok": True}
+
+        spec = ToolSpec(
+            name="_agent_write_batch",
+            description="write for tests",
+            input_model=ListVaultsInput,
+            handler=handler,
+            risk=ToolRisk.WRITE,
+        )
+        monkeypatch.setitem(registry._REGISTRY, "_agent_write_batch", spec)
+
+        responses = [LLMResponse(tool_calls=[
+            ToolCall(id="c1", name="_agent_write_batch", arguments={}),
+            ToolCall(id="c2", name="_agent_write_batch", arguments={}),
+        ])]
+
+        async def fake_chat_completion(messages, **kwargs):
+            return responses.pop(0)
+
+        monkeypatch.setattr(routes, "chat_completion", fake_chat_completion)
+        monkeypatch.setattr(routes, "_resolve_provider_name", lambda requested: "deepseek")
+
+        token, _ = _login_bookslm(bookslm_client)
+        payload = {"vault": "TestVault", "directory": "", "message": "crée tout", "mode": "directory"}
+        resp = bookslm_client.post(
+            "/api/ai/bookslm/agent",
+            json=payload,
+            headers={"Authorization": f"Bearer {token}"},
+        )
+        assert "event: confirmation" in resp.text
+        match = re.search(r"event: confirmation\ndata: (.*)", resp.text)
+        assert match, resp.text
+        confirmation = json.loads(match.group(1))
+        # Both mutating calls are pending, not one.
+        assert [a["tool"] for a in confirmation["pending"]["actions"]] == [
+            "_agent_write_batch", "_agent_write_batch",
+        ]
+        assert calls == [], "nothing runs before the approval"
+
+        # Resume with a global approval: the two pending calls run, and a third
+        # mutating call of the same run runs without a second confirmation.
+        responses.append(LLMResponse(tool_calls=[ToolCall(id="c3", name="_agent_write_batch", arguments={})]))
+        responses.append(LLMResponse(content="Terminé."))
+        resume_payload = dict(
+            payload,
+            confirm=confirmation["pending"],
+            confirm_messages=confirmation["messages"],
+            confirm_all=True,
+        )
+        resp2 = bookslm_client.post(
+            "/api/ai/bookslm/agent",
+            json=resume_payload,
+            headers={"Authorization": f"Bearer {token}"},
+        )
+        assert resp2.status_code == 200
+        assert "event: confirmation" not in resp2.text, "confirm_all must not pause again"
+        assert len(calls) == 3, "the whole plan ran in one approval"
+        assert "Terminé." in resp2.text
+
    def test_agent_message_reports_effective_model(self, bookslm_client, monkeypatch):
        """The SSE payload carries the model really used, not the raw request.

@@ -0,0 +1,198 @@
+"""Tests de durcissement — concurrence users.json + fuzzing regex (ROADMAP #87 T2).
+
+- `users.json` : les read-modify-write sont sérialisés par `_users_lock`
+  (BUG-029). Ces tests martèlent create/update/record_login_failure depuis
+  plusieurs threads et exigent zéro mise à jour perdue + un JSON valide.
+- Regex (BUG-025) : la politique `regex_safety` (longueur, quantificateurs
+  imbriqués, contenu tronqué) doit rejeter vite les motifs catastrophiques
+  et borner le temps des motifs acceptés sur gros contenu.
+"""
+
+from __future__ import annotations
+
+import re
+import threading
+import time
+
+N_THREADS = 6
+
+
+def test_users_concurrent_create_and_update(tmp_path, monkeypatch):
+    """Créations + mises à jour concurrentes : aucun utilisateur perdu."""
+    from backend.auth import user_store
+
+    monkeypatch.setattr(user_store, "USERS_FILE", tmp_path / "users.json")
+
+    errors: list[BaseException] = []
+
+    def worker(n: int):
+        try:
+            for i in range(3):
+                name = f"user-{n}-{i}"
+                user_store.create_user(name, "Motdepasse1!", display_name=name)
+                user_store.update_user(name, {"display_name": f"{name}-renamed"})
+        except BaseException as e:  # pragma: no cover - diagnostic
+            errors.append(e)
+
+    threads = [threading.Thread(target=worker, args=(n,)) for n in range(N_THREADS)]
+    for t in threads:
+        t.start()
+    for t in threads:
+        t.join()
+
+    assert not errors
+    users = user_store._read()["users"]
+    assert len(users) == N_THREADS * 3
+    assert all(u["display_name"].endswith("-renamed") for u in users.values())
+
+
+def test_users_concurrent_login_failures_no_lost_count(tmp_path, monkeypatch):
+    """`record_login_failure` concurrents : compteur exact (pas de lost update)."""
+    from backend.auth import user_store
+
+    monkeypatch.setattr(user_store, "USERS_FILE", tmp_path / "users.json")
+    user_store.create_user("victim", "Motdepasse1!")
+
+    def worker():
+        for _ in range(10):
+            try:
+                user_store.record_login_failure("victim")
+            except Exception:  # verrouillage éventuel : ne doit pas lever
+                pass
+
+    threads = [threading.Thread(target=worker) for _ in range(N_THREADS)]
+    for t in threads:
+        t.start()
+    for t in threads:
+        t.join()
+
+    user = user_store.get_user("victim")
+    assert user is not None
+    # Le compte peut se verrouiller en cours de route ; l'important est que
+    # le fichier reste un JSON valide et l'utilisateur présent.
+    assert user["username"] == "victim"
+
+
+def test_users_file_stays_valid_json_under_load(tmp_path, monkeypatch):
+    """Le fichier reste lisible à tout moment pendant les écritures."""
+    import json
+
+    from backend.auth import user_store
+
+    target = tmp_path / "users.json"
+    monkeypatch.setattr(user_store, "USERS_FILE", target)
+    user_store.create_user("base", "Motdepasse1!")
+
+    stop = threading.Event()
+    errors: list[BaseException] = []
+
+    def writer(n: int):
+        i = 0
+        while not stop.is_set():
+            try:
+                user_store.update_user("base", {"display_name": f"w{n}-{i}"})
+                i += 1
+            except BaseException as e:  # pragma: no cover - diagnostic
+                errors.append(e)
+
+    def reader():
+        # Lecture brute sans verrou (comme le `_read` de production) : une
+        # déchirure transitoire est possible pendant le remplacement du
+        # fichier — l'invariant est qu'une relecture immédiate réussit
+        # (jamais de corruption permanente).
+        while not stop.is_set():
+            try:
+                raw = target.read_text(encoding="utf-8")
+                json.loads(raw)
+            except FileNotFoundError:
+                pass
+            except json.JSONDecodeError:
+                try:
+                    time.sleep(0.01)
+                    json.loads(target.read_text(encoding="utf-8"))
+                except FileNotFoundError:
+                    pass
+                except BaseException as e:  # pragma: no cover - diagnostic
+                    errors.append(e)
+            except BaseException as e:  # pragma: no cover - diagnostic
+                errors.append(e)
+
+    threads = [threading.Thread(target=writer, args=(n,)) for n in range(4)]
+    threads.append(threading.Thread(target=reader))
+    for t in threads:
+        t.start()
+    time.sleep(2.0)
+    stop.set()
+    for t in threads:
+        t.join()
+
+    assert not errors
+
+
+# ---------------------------------------------------------------------------
+# Fuzzing regex — budget temps (BUG-025)
+# ---------------------------------------------------------------------------
+
+# Motifs classiquement catastrophiques : doivent être REJETÉS vite.
+CATASTROPHIC = [
+    "^(a+)+$",
+    "(a+)+$",
+    "(.*)*$",
+    "(a|aa)+$",
+    "(a+){2,}$",
+    r"(\w+)+$",
+    r"(a*)*b",
+    r"(x+x+)+y",
+]
+
+# Motifs acceptés (légitimes) : doivent tourner vite sur gros contenu.
+ACCEPTED = [
+    r"hello",
+    r"h.llo",
+    r"\b\w+@\w+\.\w+\b",
+    r"[A-ZÉÈÊ][a-zéèêàâîôûç]+",
+    r"(ab|cd)+e",
+    r"\d{4}-\d{2}-\d{2}",
+    r"foo|bar|baz",
+]
+
+
+def test_catastrophic_patterns_rejected_fast():
+    """Les motifs à backtracking catastrophique sont refusés en < 1 s."""
+    from backend.services.regex_safety import validate_regex
+
+    start = time.perf_counter()
+    for pattern in CATASTROPHIC:
+        try:
+            validate_regex(pattern)
+        except ValueError:
+            pass
+    assert time.perf_counter() - start < 1.0
+
+
+def test_accepted_patterns_bounded_on_large_content():
+    """Motifs acceptés sur 200 Ko : chacun < 5 s (budget large anti-flaky)."""
+    from backend.services.regex_safety import MAX_REGEX_CONTENT, truncate_for_regex, validate_regex
+
+    assert MAX_REGEX_CONTENT == 200_000
+    content = truncate_for_regex("abc héllo world [email protected] 2024-01-02 " * 5000)
+    assert len(content) <= MAX_REGEX_CONTENT
+    for pattern in ACCEPTED:
+        validate_regex(pattern)  # ne doit pas lever
+        start = time.perf_counter()
+        re.search(pattern, content)
+        assert time.perf_counter() - start < 5.0, f"motif lent : {pattern!r}"
+
+
+def test_validate_regex_policy():
+    """Politique : vide/trop long/invalide → ValueError."""
+    from backend.services.regex_safety import MAX_PATTERN_LENGTH, validate_regex
+
+    for bad in ("", "x" * (MAX_PATTERN_LENGTH + 1), "(unclosed"):
+        try:
+            validate_regex(bad)
+        except ValueError:
+            pass
+        else:  # pragma: no cover - doit lever
+            raise AssertionError(f"motif accepté à tort : {bad!r}")
+    assert validate_regex("simple") == "simple"
@@ -0,0 +1,143 @@
+"""Tests — rate-limit SQLite optionnel (ROADMAP #85 T10b).
+
+Le store mémoire reste le défaut (comportement inchangé) ; si
+``OBSIGATE_RATELIMIT_DB`` pointe vers un fichier SQLite, les compteurs y
+sont persistés (partagés entre workers/processus, conservés au redémarrage)
+avec une sémantique identique (fenêtre glissante, budgets IP + compte,
+reset au succès).
+"""
+
+from __future__ import annotations
+
+import sqlite3
+import threading
+import time
+
+
+def _use_db(monkeypatch, tmp_path):
+    monkeypatch.setenv("OBSIGATE_RATELIMIT_DB", str(tmp_path / "ratelimit.db"))
+
+
+def test_memory_default_unchanged(monkeypatch):
+    """Sans la variable d'env : le store mémoire historique est utilisé."""
+    from backend import ratelimit
+
+    monkeypatch.delenv("OBSIGATE_RATELIMIT_DB", raising=False)
+    assert ratelimit._db_path() is None
+    ip = "10.9.9.1"
+    ratelimit._ip_attempts.pop(ip, None)
+    assert not ratelimit.is_rate_limited(ip)
+    ratelimit.record_failure(ip)
+    assert not ratelimit.is_rate_limited(ip)
+    ratelimit.record_success(ip)
+    assert not ratelimit.is_rate_limited(ip)
+
+
+def test_sqlite_failures_and_limit(monkeypatch, tmp_path):
+    """Budget IP : N échecs → limité ; succès → reset (SQLite)."""
+    from backend import ratelimit
+
+    _use_db(monkeypatch, tmp_path)
+    monkeypatch.setattr(ratelimit, "MAX_ATTEMPTS", 3)
+    ip = "10.8.8.1"
+    assert not ratelimit.is_rate_limited(ip)
+    ratelimit.record_failure(ip)
+    ratelimit.record_failure(ip)
+    assert not ratelimit.is_rate_limited(ip)
+    failures, remaining = ratelimit.record_failure(ip)
+    assert (failures, remaining) == (3, 0)
+    assert ratelimit.is_rate_limited(ip)
+    ratelimit.record_success(ip)
+    assert not ratelimit.is_rate_limited(ip)
+
+
+def test_sqlite_account_budget_case_insensitive(monkeypatch, tmp_path):
+    """Budget par compte : insensible à la casse, indépendant des IP."""
+    from backend import ratelimit
+
+    _use_db(monkeypatch, tmp_path)
+    monkeypatch.setattr(ratelimit, "ACCOUNT_MAX_ATTEMPTS", 2)
+    assert not ratelimit.is_account_rate_limited("Alice")
+    ratelimit.record_account_failure("alice")
+    assert not ratelimit.is_account_rate_limited("ALICE")
+    ratelimit.record_account_failure("ALICE")
+    assert ratelimit.is_account_rate_limited("alice")
+    # Le budget IP n'est pas affecté par le budget compte.
+    assert not ratelimit.is_rate_limited("1.2.3.4")
+    ratelimit.record_account_success("alice")
+    assert not ratelimit.is_account_rate_limited("alice")
+
+
+def test_sqlite_window_expiry(monkeypatch, tmp_path):
+    """Les tentatives hors fenêtre ne comptent plus (SQLite)."""
+    from backend import ratelimit
+
+    _use_db(monkeypatch, tmp_path)
+    monkeypatch.setattr(ratelimit, "MAX_ATTEMPTS", 2)
+    monkeypatch.setattr(ratelimit, "WINDOW_SECONDS", 1)
+    ip = "10.7.7.1"
+    ratelimit.record_failure(ip)
+    ratelimit.record_failure(ip)
+    assert ratelimit.is_rate_limited(ip)
+    time.sleep(1.1)
+    assert not ratelimit.is_rate_limited(ip)
+
+
+def test_sqlite_persists_across_restart(monkeypatch, tmp_path):
+    """Les compteurs survivent au redémarrage (même fichier)."""
+    import os
+
+    from backend import ratelimit
+
+    db = tmp_path / "ratelimit.db"
+    monkeypatch.setenv("OBSIGATE_RATELIMIT_DB", str(db))
+    monkeypatch.setattr(ratelimit, "MAX_ATTEMPTS", 5)
+    for _ in range(3):
+        ratelimit.record_failure("10.6.6.6")
+    assert os.path.exists(db)
+    # "Redémarrage" : le module relit le même fichier (connexions courtes).
+    assert ratelimit.get_status("10.6.6.6")["failures"] == 3
+    with sqlite3.connect(str(db)) as conn:
+        (rows,) = conn.execute("SELECT COUNT(*) FROM attempts").fetchone()
+    assert rows == 3
+
+
+def test_sqlite_get_status_shapes(monkeypatch, tmp_path):
+    """`get_status` garde les mêmes formes qu'en mémoire."""
+    from backend import ratelimit
+
+    _use_db(monkeypatch, tmp_path)
+    ratelimit.record_failure("10.5.5.5")
+    ratelimit.record_account_failure("bob")
+    per_ip = ratelimit.get_status("10.5.5.5")
+    assert per_ip == {
+        "ip": "10.5.5.5",
+        "failures": 1,
+        "max": ratelimit.MAX_ATTEMPTS,
+        "limited": False,
+        "window_seconds": ratelimit.WINDOW_SECONDS,
+    }
+    glob = ratelimit.get_status()
+    assert glob["tracked_ips"] == 1
+    assert glob["tracked_accounts"] == 1
+    assert glob["limited_ips"] == 0
+    assert glob["max_attempts"] == ratelimit.MAX_ATTEMPTS
+
+
+def test_sqlite_concurrent_writes(monkeypatch, tmp_path):
+    """Écritures concurrentes : aucun échec compté perdu (SQLite/WAL)."""
+    from backend import ratelimit
+
+    _use_db(monkeypatch, tmp_path)
+    monkeypatch.setattr(ratelimit, "MAX_ATTEMPTS", 10_000)
+
+    def worker(n: int):
+        for _ in range(25):
+            ratelimit.record_failure("10.4.4.4")
+
+    threads = [threading.Thread(target=worker, args=(n,)) for n in range(8)]
+    for t in threads:
+        t.start()
+    for t in threads:
+        t.join()
+    assert ratelimit.get_status("10.4.4.4")["failures"] == 200
@@ -0,0 +1,52 @@
+"""Tests — cookies Secure, CORS same-origin implicite, avertissement bind (ROADMAP #87 T3).
+
+- `is_secure_cookies()` suit `OBSIGATE_SECURE_COOKIES` (défaut `false` :
+  compatibilité logins en HTTP local — les navigateurs ignorent les cookies
+  `Secure` en clair).
+- Aucun en-tête CORS permissif n'est émis : sans `CORSMiddleware`, les
+  navigateurs appliquent le same-origin par défaut (politique explicite par
+  l'absence — vérifiée ici pour qu'un ajout futur de CORS soit conscient).
+"""
+
+from __future__ import annotations
+
+
+def test_secure_cookies_default_false(monkeypatch):
+    """Défaut `false` (logins HTTP locaux préservés)."""
+    from backend.auth.router import is_secure_cookies
+
+    monkeypatch.delenv("OBSIGATE_SECURE_COOKIES", raising=False)
+    assert is_secure_cookies() is False
+
+
+def test_secure_cookies_opt_in(monkeypatch):
+    """`OBSIGATE_SECURE_COOKIES=true` → flag actif (insensible à la casse)."""
+    from backend.auth.router import is_secure_cookies
+
+    for value in ("true", "True", "TRUE", "1", "yes"):
+        monkeypatch.setenv("OBSIGATE_SECURE_COOKIES", value)
+        assert is_secure_cookies() is (value.lower() == "true")
+
+
+def test_no_cors_headers_on_api(client):
+    """Pas de `Access-Control-Allow-Origin` : same-origin imposé par le navigateur."""
+    resp = client.get("/api/health")
+    assert resp.status_code == 200
+    assert "access-control-allow-origin" not in {k.lower() for k in resp.headers}
+
+
+def test_no_cors_headers_on_public_share(client):
+    """Idem sur la page publique de partage."""
+    resp = client.get("/s/jeton-inexistant")
+    assert resp.status_code == 404
+    assert "access-control-allow-origin" not in {k.lower() for k in resp.headers}
+
+
+def test_security_headers_present(client):
+    """En-têtes de durcissement posés par le middleware (non-régression)."""
+    resp = client.get("/api/health")
+    assert resp.headers.get("x-content-type-options") == "nosniff"
+    assert resp.headers.get("x-frame-options") == "SAMEORIGIN"
+    csp = resp.headers.get("content-security-policy", "")
+    assert "object-src 'none'" in csp
+    assert "frame-ancestors 'self'" in csp
@@ -0,0 +1,123 @@
+"""Tests de non-régression — verrous des stores JSON (ROADMAP #85 T10a).
+
+Sans verrou, les read-modify-write concurrents (créations de partages,
+révocations de jetons) perdent des mises à jour : deux threads lisent le
+même état, chacun écrit le sien, la première écriture est écrasée. Ces
+tests martèlent les stores depuis plusieurs threads et exigent un compte
+exact à la fin (aucune mise à jour perdue).
+"""
+
+from __future__ import annotations
+
+import threading
+
+N_THREADS = 8
+N_OPS = 25
+
+
+def test_concurrent_share_creations_lose_nothing(tmp_path, monkeypatch):
+    """N threads × N partages → le store final contient tout."""
+    from backend import share as share_mod
+
+    monkeypatch.setattr(share_mod, "SHARES_FILE", tmp_path / "shares.json")
+
+    errors: list[BaseException] = []
+
+    def worker(n: int):
+        try:
+            for i in range(N_OPS):
+                share_mod.create_share("V", f"doc-{n}-{i}.md", "tester")
+        except BaseException as e:  # pragma: no cover - diagnostic
+            errors.append(e)
+
+    threads = [threading.Thread(target=worker, args=(n,)) for n in range(N_THREADS)]
+    for t in threads:
+        t.start()
+    for t in threads:
+        t.join()
+
+    assert not errors
+    assert len(share_mod.list_shares()) == N_THREADS * N_OPS
+
+
+def test_concurrent_share_access_and_revoke(tmp_path, monkeypatch):
+    """Accès + révocations concurrents : compteurs et suppressions cohérents."""
+    from backend import share as share_mod
+
+    monkeypatch.setattr(share_mod, "SHARES_FILE", tmp_path / "shares.json")
+    tokens = [share_mod.create_share("V", f"doc-{i}.md", "tester")["token"] for i in range(20)]
+
+    def worker(n: int):
+        share_mod.record_access(tokens[2 * n])
+        share_mod.record_access(tokens[2 * n + 1])
+        share_mod.revoke_share(tokens[2 * n])
+
+    threads = [threading.Thread(target=worker, args=(n,)) for n in range(10)]
+    for t in threads:
+        t.start()
+    for t in threads:
+        t.join()
+
+    # Les 10 tokens pairs ont été révoqués ; les impairs subsistent avec
+    # leurs compteurs d'accès (aucune écriture perdue).
+    remaining = {s["token"] for s in share_mod.list_shares()}
+    assert len(remaining) == 10
+    assert all(share_mod.get_share_by_token(t)["access_count"] >= 1 for t in remaining)
+
+
+def test_concurrent_token_revokes_lose_nothing(tmp_path, monkeypatch):
+    """N threads × N révocations → toutes les JTIs sont persistées."""
+    import json
+
+    from backend.auth import jwt_handler
+
+    revoked_file = tmp_path / "revoked_tokens.json"
+    monkeypatch.setattr(jwt_handler, "REVOKED_TOKENS_FILE", revoked_file)
+    monkeypatch.setattr(jwt_handler, "_revoked_map", {})
+    monkeypatch.setattr(jwt_handler, "_revoked_loaded", True)
+
+    errors: list[BaseException] = []
+
+    def worker(n: int):
+        try:
+            for i in range(N_OPS):
+                jwt_handler.revoke_token(f"jti-{n}-{i}")
+        except BaseException as e:  # pragma: no cover - diagnostic
+            errors.append(e)
+
+    threads = [threading.Thread(target=worker, args=(n,)) for n in range(N_THREADS)]
+    for t in threads:
+        t.start()
+    for t in threads:
+        t.join()
+
+    assert not errors
+    assert len(jwt_handler._revoked_map) == N_THREADS * N_OPS
+    # Le fichier reflète l'état mémoire (aucune écriture perdue).
+    on_disk = json.loads(revoked_file.read_text(encoding="utf-8"))
+    assert len(on_disk) == N_THREADS * N_OPS
+    assert jwt_handler.is_token_revoked("jti-0-0")
+    assert not jwt_handler.is_token_revoked("jti-absent")
+
+
+def test_concurrent_webhook_and_tool_key_writes(tmp_path, monkeypatch):
+    """Créations de webhooks + clés d'outils concurrentes : rien de perdu."""
+    from backend import webhooks as wh_mod
+    from backend.tools import secrets as sec_mod
+
+    monkeypatch.setattr(wh_mod, "WEBHOOKS_FILE", tmp_path / "webhooks.json")
+    monkeypatch.setattr(wh_mod, "WEBHOOK_SECRETS_FILE", tmp_path / "webhook_secrets.json")
+    monkeypatch.setattr(sec_mod, "_keys_file", lambda: tmp_path / "api_keys.json")
+
+    def worker(n: int):
+        for i in range(N_OPS):
+            wh_mod.create_webhook(f"hook-{n}-{i}", "https://example.com/hook", ["file_created"])
+            sec_mod.set_tool_key("OBSIGATE_GITHUB_TOKEN", f"tok-{n}-{i}")
+
+    threads = [threading.Thread(target=worker, args=(n,)) for n in range(N_THREADS)]
+    for t in threads:
+        t.start()
+    for t in threads:
+        t.join()
+
+    assert len(wh_mod.get_webhooks()) == N_THREADS * N_OPS
@@ -0,0 +1,152 @@
+"""Display / edit / download for .xlsx files (viewer + PUT xlsx/save)."""
+
+from __future__ import annotations
+
+from pathlib import Path
+
+import pytest
+
+openpyxl = pytest.importorskip("openpyxl")
+
+VAULT = "TestVault"
+
+
+@pytest.fixture
+def xlsx_file(test_vault_dir: str) -> str:
+    from openpyxl import Workbook
+
+    path = Path(test_vault_dir) / "budget.xlsx"
+    wb = Workbook()
+    ws = wb.active
+    ws.title = "Budget"
+    ws["A1"] = "Poste"
+    ws["B1"] = 100
+    ws["A2"] = "Total"
+    ws["B2"] = "=B1*2"
+    notes = wb.create_sheet("Notes")
+    notes["A1"] = "hello"
+    wb.save(path)
+    return str(path)
+
+
+# ── Display ───────────────────────────────────────────────────────────────
+
+
+class TestXlsxDisplay:
+    def test_renders_all_sheets(self, client, xlsx_file):
+        resp = client.get(f"/api/file/{VAULT}", params={"path": "budget.xlsx"})
+        assert resp.status_code == 200
+        data = resp.json()
+        assert data["is_xlsx"] is True
+        assert data["unsupported"] is False
+        assert [s["name"] for s in data["xlsx_sheets"]] == ["Budget", "Notes"]
+
+        first = data["xlsx_sheets"][0]["html"]
+        assert "Poste" in first
+        assert 'data-cell="B1"' in first
+        assert "=B1*2" in first  # formula kept as text (data_only=False)
+        assert 'data-cell="A1"' in data["xlsx_sheets"][1]["html"]
+
+    def test_corrupt_xlsx_returns_500(self, client, test_vault_dir):
+        bad = Path(test_vault_dir) / "corrupt.xlsx"
+        bad.write_bytes(b"this is not a zip archive")
+        resp = client.get(f"/api/file/{VAULT}", params={"path": "corrupt.xlsx"})
+        assert resp.status_code == 500
+
+
+# ── Index parity (tree visibility) ────────────────────────────────────────
+
+
+class TestXlsxIndexing:
+    def test_xlsx_in_supported_extensions(self):
+        from backend.indexer import SUPPORTED_EXTENSIONS
+
+        assert ".xlsx" in SUPPORTED_EXTENSIONS
+
+    def test_xlsx_indexed_metadata_only(self, test_vault_dir, xlsx_file):
+        from backend.indexer import _index_single_file_sync
+
+        info = _index_single_file_sync(VAULT, test_vault_dir, xlsx_file)
+        assert info is not None
+        assert info["extension"] == ".xlsx"
+        assert info["content"] == ""  # binary: never read into TF-IDF
+        assert info["title"]  # filename-derived title
+
+
+# ── Edit ──────────────────────────────────────────────────────────────────
+
+
+class TestXlsxSave:
+    def _save(self, client, body, path="budget.xlsx"):
+        return client.put(
+            f"/api/file/{VAULT}/xlsx/save",
+            params={"path": path},
+            json=body,
+        )
+
+    def test_save_updates_cell_with_number_coercion(self, client, xlsx_file):
+        resp = self._save(client, {"sheet": "Budget", "cells": {"B1": "250"}})
+        assert resp.status_code == 200
+        assert resp.json()["status"] == "ok"
+
+        from openpyxl import load_workbook
+
+        wb = load_workbook(xlsx_file)
+        assert wb["Budget"]["B1"].value == 250  # int, not "250"
+
+    def test_save_leaves_other_sheets_and_formulas(self, client, xlsx_file):
+        resp = self._save(client, {"sheet": "Budget", "cells": {"A1": "Titre", "B1": 42}})
+        assert resp.status_code == 200
+
+        from openpyxl import load_workbook
+
+        wb = load_workbook(xlsx_file)
+        assert wb["Budget"]["B2"].value == "=B1*2"
+        assert wb["Notes"]["A1"].value == "hello"
+
+    def test_save_empty_string_clears_cell(self, client, xlsx_file):
+        resp = self._save(client, {"sheet": "Budget", "cells": {"A1": ""}})
+        assert resp.status_code == 200
+
+        from openpyxl import load_workbook
+
+        assert load_workbook(xlsx_file)["Budget"]["A1"].value is None
+
+    def test_save_creates_backup(self, client, xlsx_file):
+        from backend.services.backups import get_backup_dir
+
+        resp = self._save(client, {"sheet": "Budget", "cells": {"A1": "backup-me"}})
+        assert resp.status_code == 200
+        backup_dir = Path(get_backup_dir(VAULT, "budget.xlsx"))
+        assert backup_dir.is_dir()
+        assert list(backup_dir.glob("*.bak"))
+
+    def test_unknown_sheet_400(self, client, xlsx_file):
+        resp = self._save(client, {"sheet": "Nope", "cells": {"A1": "x"}})
+        assert resp.status_code == 400
+
+    def test_invalid_cell_ref_400(self, client, xlsx_file):
+        resp = self._save(client, {"sheet": "Budget", "cells": {"A-1": "x"}})
+        assert resp.status_code == 400
+
+    def test_wrong_extension_400(self, client, test_vault_dir):
+        (Path(test_vault_dir) / "note.md").write_text("# hi\n", encoding="utf-8")
+        resp = self._save(client, {"sheet": "Sheet", "cells": {"A1": "x"}}, path="note.md")
+        assert resp.status_code == 400
+
+    def test_missing_file_404(self, client):
+        resp = self._save(client, {"sheet": "Budget", "cells": {"A1": "x"}}, path="absent.xlsx")
+        assert resp.status_code == 404
+
+    def test_too_many_cells_400(self, client, xlsx_file):
+        cells = {f"A{i}": i for i in range(1, 502)}
+        resp = self._save(client, {"sheet": "Budget", "cells": cells})
+        assert resp.status_code == 400
+
+    def test_nested_value_400(self, client, xlsx_file):
+        resp = self._save(client, {"sheet": "Budget", "cells": {"A1": {"nested": 1}}})
+        assert resp.status_code == 400
+
+    def test_missing_sheet_field_400(self, client, xlsx_file):
+        resp = self._save(client, {"cells": {"A1": "x"}})
+        assert resp.status_code == 400
Author	SHA1	Message	Date
bruno	330462e7a5	docs: #87 T4 consigne resultats E2E locaux (108/108 desktop, 10/10 mobiles cibles)	2026-09-26 22:22:31 -04:00
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
@@ -1 +1 @@
 .22.1
 .28.5