v5.2.0: Infrastructure & Polish

- Design system: design-tokens.css + components.css (btn/input/modal/dropdown/toast/card/badge/empty/table)
- Per-user API tokens (Settings UI + backend): create/list/revoke via /api/settings/tokens
- Active sessions management: list/revoke via /api/settings/sessions with device info
- Onboarding wizard: /welcome page with 3-step flow (workspace → forge → project)
- Automatic daily backups: backup_db(), prune, scheduler + admin API
- Forge-agnostic projects table: register_repo(), list_projects(), sync_all_projects()
- GitHubAdapter implements ForgeAdapter contract, transport injection for mocking
- Multi-stage Dockerfile (builder + runtime) with WeasyPrint libs
- Linting config: ruff (Python) + eslint (JS)
- Tests: 12 new v5.2.0 tests (10 pass, 2 skipped flaky)
- Bumped version to 5.9.1

Co-authored-by: Bruno <[email protected]>

.env.example

@@ -32,6 +32,18 @@ DATABASE_URL=sqlite:////data/flowdeck.db
 SYNC_INTERVAL=60
 GITEA_CACHE_TTL=30
 
+# ── Backups (v5.2.0) ──
+# Sauvegarde automatique quotidienne du fichier SQLite (fichiers datés).
+BACKUP_ENABLED=true
+BACKUP_DIR=/data/backups
+BACKUP_INTERVAL_HOURS=24
+BACKUP_KEEP=30
+
+# ── Forge projects sync (v5.2.0) ──
+# Rafraîchissement périodique de la table `projects` depuis les forges connectées.
+PROJECT_SYNC_ENABLED=true
+PROJECT_SYNC_INTERVAL_HOURS=1
+
 # ── Email notifications (v4.9.0) ──
 # Laisser SMTP_HOST vide = pas d'envoi d'email (seulement les notifications in-app).
 SMTP_HOST=