fix: A21 phase 2c — 190 routes hors loop, 86 % total (v7.26.0)

4 passes (283 → 93 routes async sur 667 = 86 % hors loop, avant 61 %) :

A. RACINE AUTH — `get_current_user` (auth/session.py) était `async def`
   SANS aucun await (cookie decode = synchrone) ; idem ses clones :
   `agent._current_user_id/_workspace_id/_current_admin` (34 sites) et
   `sso._require_admin` (corps 0 await, 6 sites) → `def` +
   47 `await` supprimés. Piège : 3 call sites passaient par l'alias `gcu`
   (grep littéral aveugle) — 8 tests en échec → corrigés.

B. Re-scan : 19 routes devenues SANS await → `def` (agent 8, sso 5,
   web_clipper 3, projects 2, auth 1…).

C/D. 155 routes dont les seuls awaits = `request.json()` / événements :
   - try/except `body = {}` → `Body(default={})` (même tolérance)
   - try/except `raise HTTPException(400)` → `Body(...)` REQUIS
     (422 FastAPI — aucun test ne couvrait le 400)
   - forme conditionnelle `request.json() if content-type else {}`
     (54 sites) → défaut `{}` (sans corps = `{}` dans les 2 cas)
   - `await fire_*` → `run_event_sync(...)` ; imports `Body` /
     `run_event_sync` ajoutés aux routers convertis

Reste async (93, justifié) : form/upload/file (22), réseau gitea/llm/oidc,
`_json_body` (9), 2 JSON inline en argument, 1 fallback logique
(capture_frontend_error), 1 lecture conditionnelle (web_clipper), mixtes.

suite **1089/1089** · ruff OK · docs à jour

app/routers/collaboration.py

@@ -8,12 +8,13 @@ from __future__ import annotations
 
 import logging
 
-from fastapi import APIRouter, HTTPException, Request
+from fastapi import APIRouter, Body, HTTPException, Request
 
 from app.auth.session import SessionManager
 from app.db import get_conn
 from app.services import notifications as notif
 from app.services.automations import fire_event as _fire_event
+from app.services.automations import run_event_sync
 
 logger = logging.getLogger(__name__)
 router = APIRouter(tags=["collaboration"], prefix="/api")
@@ -70,10 +71,9 @@ def list_comments(request: Request, page_id: int):
 
 
 @router.post("/pages/{page_id}/comments")
-async def add_comment(request: Request, page_id: int):
+def add_comment(request: Request, page_id: int, body: dict = Body(default={})):
     """Create a page or inline comment. Mentions (@login) notify users."""
     user = _current_user(request)
-    body = await request.json() if request.headers.get("content-type") else {}
     text = (body.get("body") or "").strip()
     if not text:
         raise HTTPException(400, "body required")
@@ -124,10 +124,10 @@ async def add_comment(request: Request, page_id: int):
         conn.commit()
 
     try:
-        await _fire_event("comment.added", {"comment_id": comment_id, "page_id": page_id, "user_id": uid})
+        run_event_sync(_fire_event("comment.added", {"comment_id": comment_id, "page_id": page_id, "user_id": uid}))
         mentioned_ids = notif.extract_mentions(text)
         if mentioned_ids:
-            await _fire_event("mention.added", {"page_id": page_id, "comment_id": comment_id, "count": len(mentioned_ids)})
+            run_event_sync(_fire_event("mention.added", {"page_id": page_id, "comment_id": comment_id, "count": len(mentioned_ids)}))
     except Exception:
         logger.exception("add_comment")
 
@@ -135,14 +135,13 @@ async def add_comment(request: Request, page_id: int):
 
 
 @router.post("/pages/{page_id}/mentions")
-async def notify_page_mentions(request: Request, page_id: int):
+def notify_page_mentions(request: Request, page_id: int, body: dict = Body(default={})):
     """Notify users @-mentioned in a page's content (called on save).
 
     Accepts {"text": "..."} containing @login handles. Deduplicated server-side
     against a per-page cache so repeated auto-saves don't spam notifications.
     """
     user = _current_user(request)
-    body = await request.json() if request.headers.get("content-type") else {}
     text = body.get("text") or ""
     with get_conn() as conn:
         page = conn.execute("SELECT id, title FROM pages WHERE id=?", (page_id,)).fetchone()
@@ -157,17 +156,16 @@ async def notify_page_mentions(request: Request, page_id: int):
         conn.commit()
     if mentioned:
         try:
-            await _fire_event("mention.added", {"page_id": page_id, "user_ids": mentioned, "count": len(mentioned)})
+            run_event_sync(_fire_event("mention.added", {"page_id": page_id, "user_ids": mentioned, "count": len(mentioned)}))
         except Exception:
             logger.exception("notify_page_mentions")
     return {"mentioned": mentioned}
 
 
 @router.put("/comments/{comment_id}")
-async def update_comment(request: Request, comment_id: int):
+def update_comment(request: Request, comment_id: int, body: dict = Body(default={})):
     """Update a comment body or resolve/unresolve it."""
     user = _current_user(request)
-    body = await request.json() if request.headers.get("content-type") else {}
     with get_conn() as conn:
         row = conn.execute(
             "SELECT * FROM comments WHERE id=?", (comment_id,)
@@ -188,7 +186,7 @@ async def update_comment(request: Request, comment_id: int):
         conn.commit()
     if body.get("resolved") and not was_resolved:
         try:
-            await _fire_event("comment.resolved", {"comment_id": comment_id, "page_id": row["page_id"]})
+            run_event_sync(_fire_event("comment.resolved", {"comment_id": comment_id, "page_id": row["page_id"]}))
         except Exception:
             logger.exception("update_comment")
     return {"id": comment_id, "status": "updated"}