fix: A21 phase 1 — 352 routes async sans await → threadpool (v7.8.0)

- Conversion `async def` → `def` de TOUTES les routes dont le corps ne contient
  ni `await`, ni `async with`, ni `async for`, ni `asyncio` (scan automatique
  corps par corps sur app/ : 352 converties, 0 dangereuses, vérifié
  `asyncio`/`run_coroutine`/`.result()` absents). FastAPI exécute ces handlers
  dans son threadpool → tout leur SQLite (`get_conn()` + `conn.execute`) quitte
  l'event loop, sans changer une ligne de logique.
- Répartition : api_v2 60, dashboard 40, collections 25, board 23,
  workspace 19, wiki 17, permissions 14, api 14, main.py 6, + 35 fichiers.
- Les 4 routers prioritaires de l'audit sont couverts par ce lot :
  api_v2 60 + dashboard 40 + collections 25 + board 23 = 148 conversions
  (le reste de leurs routes attend la phase 2 : elles ont de vrais `await`).
- Reste (phase 2) : les 311 routes avec de vrais `await` → enrouler les blocs
  DB dans `await anyio.to_thread.run_sync(...)` ; pas de wrapper partagé livré
  (rien ne l'appellerait — YAGNI jusqu'au premier usage).

suite **1037/1037** (233 s) · `ruff check app tests` OK · docs à jour

app/routers/wiki.py

@@ -98,7 +98,7 @@ def _can_verify(user: dict, page: dict) -> bool:
 # ── teamspaces ─────────────────────────────────────────────────────────────
 
 @router.get("/api/v2/wiki/teamspaces")
-async def list_teamspaces(request: Request):
+def list_teamspaces(request: Request):
     user = _user(request)
     wid = request.query_params.get("workspace_id")
     if wid:
@@ -112,7 +112,7 @@ async def list_teamspaces(request: Request):
 
 
 @router.get("/wiki/teamspaces/{teamspace_id}", response_class=HTMLResponse)
-async def teamspace_page(teamspace_id: int, request: Request):
+def teamspace_page(teamspace_id: int, request: Request):
     """Teamspace detail HTML page — sidebar entry point."""
     user = _user(request)
     ts = _teamspace_or_404(teamspace_id, user["id"])
@@ -204,7 +204,7 @@ async def create_teamspace(request: Request):
 
 
 @router.get("/api/v2/wiki/teamspaces/{teamspace_id}")
-async def get_teamspace(teamspace_id: int, request: Request):
+def get_teamspace(teamspace_id: int, request: Request):
     user = _user(request)
     ts = _teamspace_or_404(teamspace_id, user["id"])
     ts["role"] = wiki.get_teamspace_role(user["id"], teamspace_id)
@@ -213,7 +213,7 @@ async def get_teamspace(teamspace_id: int, request: Request):
 
 
 @router.get("/api/v2/wiki/teamspaces/{teamspace_id}/members")
-async def list_members(teamspace_id: int, request: Request):
+def list_members(teamspace_id: int, request: Request):
     user = _user(request)
     _teamspace_or_404(teamspace_id, user["id"])
     with get_conn() as conn:
@@ -251,7 +251,7 @@ async def set_member(teamspace_id: int, member_id: int, request: Request):
 
 
 @router.delete("/api/v2/wiki/teamspaces/{teamspace_id}/members/{member_id}")
-async def remove_member(teamspace_id: int, member_id: int, request: Request):
+def remove_member(teamspace_id: int, member_id: int, request: Request):
     user = _user(request)
     _teamspace_or_404(teamspace_id, user["id"])
     if not wiki.can_write_teamspace(user["id"], teamspace_id):
@@ -268,7 +268,7 @@ async def remove_member(teamspace_id: int, member_id: int, request: Request):
 # ── verified pages ─────────────────────────────────────────────────────────
 
 @router.get("/api/v2/wiki/pages/{page_id}/verification")
-async def get_verification(page_id: int, request: Request):
+def get_verification(page_id: int, request: Request):
     _user(request)
     _page_or_404(page_id)
     return {"verification": wiki.verification(page_id)}
@@ -292,7 +292,7 @@ async def verify_page(page_id: int, request: Request):
 
 
 @router.delete("/api/v2/wiki/pages/{page_id}/verify")
-async def unverify_page(page_id: int, request: Request):
+def unverify_page(page_id: int, request: Request):
     user = _user(request)
     _page_or_404(page_id)
     if not wiki.unverify_page(page_id):
@@ -302,7 +302,7 @@ async def unverify_page(page_id: int, request: Request):
 
 
 @router.get("/api/v2/wiki/verified")
-async def list_verified(request: Request):
+def list_verified(request: Request):
     """Verified (non-expired) pages of a workspace — the ✅ wiki index."""
     user = _user(request)
     wid = _workspace_id(request)
@@ -331,7 +331,7 @@ async def list_verified(request: Request):
 # ── follows ────────────────────────────────────────────────────────────────
 
 @router.post("/api/v2/wiki/pages/{page_id}/follow")
-async def follow_page(page_id: int, request: Request):
+def follow_page(page_id: int, request: Request):
     user = _user(request)
     _page_or_404(page_id)
     now = wiki.toggle_follow(page_id, user["id"])
@@ -339,7 +339,7 @@ async def follow_page(page_id: int, request: Request):
 
 
 @router.get("/api/v2/wiki/pages/{page_id}/followers")
-async def list_followers(page_id: int, request: Request):
+def list_followers(page_id: int, request: Request):
     _user(request)
     _page_or_404(page_id)
     ids = wiki.followers(page_id)
@@ -372,7 +372,7 @@ async def react(comment_id: int, request: Request):
 
 
 @router.get("/api/v2/wiki/comments/{comment_id}/reactions")
-async def list_reactions(comment_id: int, request: Request):
+def list_reactions(comment_id: int, request: Request):
     _user(request)
     return {"comment_id": comment_id, "reactions": wiki.reactions(comment_id)}
 
@@ -402,7 +402,7 @@ async def create_guest(page_id: int, request: Request):
 
 
 @router.get("/api/v2/wiki/pages/{page_id}/guests")
-async def list_guests(page_id: int, request: Request):
+def list_guests(page_id: int, request: Request):
     _user(request)
     _page_or_404(page_id)
     with get_conn() as conn:
@@ -413,7 +413,7 @@ async def list_guests(page_id: int, request: Request):
 
 
 @router.delete("/api/v2/wiki/guests/{share_id}")
-async def revoke_guest(share_id: int, request: Request):
+def revoke_guest(share_id: int, request: Request):
     user = _user(request)
     with get_conn() as conn:
         if not conn.execute("SELECT 1 FROM guest_shares WHERE id=?", (share_id,)).fetchone():
@@ -436,7 +436,7 @@ Ask the person who shared it with you for a new link.</p></body></html>"""
 
 
 @router.get("/g/{token}", response_class=HTMLResponse)
-async def guest_page(token: str, request: Request):
+def guest_page(token: str, request: Request):
     """Account-less page access (read-only or commenter). 404 if inactive."""
     share = wiki.resolve_guest_share(token)
     if not share:
@@ -465,7 +465,7 @@ Editing is disabled.</div>
 # ── page views ─────────────────────────────────────────────────────────────
 
 @router.get("/api/v2/wiki/pages/{page_id}/views")
-async def page_views(page_id: int, request: Request):
+def page_views(page_id: int, request: Request):
     user = _user(request)
     page = _page_or_404(page_id)
     if page.get("teamspace_id") and not wiki.can_write_teamspace(user["id"], page["teamspace_id"]):
@@ -476,7 +476,7 @@ async def page_views(page_id: int, request: Request):
 # ── wiki home ──────────────────────────────────────────────────────────────
 
 @router.get("/api/v2/wiki/home")
-async def wiki_home(request: Request):
+def wiki_home(request: Request):
     """Aggregated knowledge home: verified pages + recents + teamspaces."""
     user = _user(request)
     wid = _workspace_id(request)
@@ -500,7 +500,7 @@ async def wiki_home(request: Request):
 
 
 @router.post("/api/v2/wiki/verify-expiry-sweep")
-async def sweep_expiry(request: Request):
+def sweep_expiry(request: Request):
     """Notify verifiers whose ✅ expires within 7 days (idempotent-ish job)."""
     user = _user(request)
     with get_conn() as conn: