feat(automations): moteur de regles if-this-then-that (v5.1.0 roadmap, bump v5.2.0)

Moteur d'automatisation complet : declencheurs (evenement / cron / bouton),
conditions combinables (eq, neq, contains, is_empty, is_not_empty, changed)
et actions (webhook, set_property, create_page, notify).

- Migration v5 : tables `automations` + `automation_runs` (avec index).
- Service `app/services/automations.py` : fire_event, cron_due (`*/N`,
  minute fixe, @hourly/@daily), scheduler de fond dans le lifespan.
- Router `app/routers/automations.py` : CRUD `/workspace/automations`,
  historique des executions, run manuel + run bouton `/api/automations/{id}/run`
  (exempt CSRF, comme `/api/agent`).
- Hooks d'evenements dans collections.py / board.py / workspace.py
  (collection.* et page.* : created/updated/deleted/moved).
- Bloc `button` dans l'editeur (menu slash) : declenche une regle au clic,
  picker d'automation inline, serialisation automations_id/name.
- Panneau Automations dans le Settings (creer/editer/activer/desactiver/
  lancer/supprimer + historique), collection scope + JSON conditions/actions.
- 11 tests `tests/test_automations.py` ; suite complete pytest 289 verte.
- Version bump 5.2.0 (VERSION, app/main.py, CHANGELOG).

app/main.py

@@ -16,6 +16,7 @@ from app.middleware.csrf import CSRFMiddleware
 from app.middleware.security import ContentSecurityPolicyMiddleware, RateLimitMiddleware
 from app.routers import dashboard, board, notes, api, auth, webhooks, collections, my_tasks, workspace, library, public_api, admin, sharing, sidebar_config, export, agent, search
 from app.routers.notifications import router as notifications_router
+from app.routers.automations import router as automations_router
 from app.routers.collaboration import router as collaboration_router
 from app.routers.gitea import router as gitea_router
 from app.routers.github_routes import router as github_router
@@ -47,20 +48,29 @@ async def lifespan(_app: FastAPI):
     from app.routers.agent import agent_scheduler
     scheduler_task = asyncio.create_task(agent_scheduler())
 
-    logger.info("FlowDeck v4.10.0 started on port %d", settings.app_port)
+    # ── Automations (v5.1.0): cron trigger scheduler ──
+    from app.services.automations import automation_scheduler
+    automation_task = asyncio.create_task(automation_scheduler())
+
+    logger.info("FlowDeck v5.2.0 started on port %d", settings.app_port)
     try:
         yield
     finally:
         scheduler_task.cancel()
+        automation_task.cancel()
         try:
             await scheduler_task
         except asyncio.CancelledError:
             pass
+        try:
+            await automation_task
+        except asyncio.CancelledError:
+            pass
 
 
 app = FastAPI(
     title="FlowDeck",
-    version="5.1.11",
+    version="5.2.0",
     docs_url="/docs" if settings.log_level == "DEBUG" else None,
     redoc_url=None,
     lifespan=lifespan,
@@ -90,6 +100,7 @@ app.include_router(sharing.router)
 app.include_router(sidebar_config.router)
 app.include_router(export.router)
 app.include_router(notifications_router)
+app.include_router(automations_router)
 app.include_router(collaboration_router)
 app.include_router(agent.router)
 app.include_router(search.router)