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/gitea.py

@@ -1,5 +1,5 @@
 """FlowDeck — Gitea integration API routes."""
-from fastapi import APIRouter, HTTPException, Request
+from fastapi import APIRouter, Body, HTTPException, Request
 from fastapi.responses import JSONResponse
 
 router = APIRouter(tags=["gitea"], prefix="/api/gitea")
@@ -202,7 +202,7 @@ def list_private_pages(owner: str, repo: str, request: Request):
 
 
 @router.post("/projects/{owner}/{repo}/private-pages")
-async def create_private_page(owner: str, repo: str, request: Request):
+def create_private_page(owner: str, repo: str, request: Request, body: dict = Body(default={})):
     """Create a new private page for this Gitea project."""
 
     from app.auth.session import SessionManager
@@ -210,10 +210,6 @@ async def create_private_page(owner: str, repo: str, request: Request):
     user = SessionManager.decode_session(request.cookies.get("flowdeck_session", ""))
     if not user:
         return JSONResponse({"error": "Not authenticated"}, status_code=401)
-    try:
-        body = await request.json()
-    except Exception:
-        body = {}
     title = body.get("title", "Untitled").strip() or "Untitled"
     with get_conn() as conn:
         cursor = conn.execute(
@@ -243,7 +239,7 @@ def get_private_page(owner: str, repo: str, page_id: int, request: Request):
 
 
 @router.put("/projects/{owner}/{repo}/private-pages/{page_id}")
-async def update_private_page(owner: str, repo: str, page_id: int, request: Request):
+def update_private_page(owner: str, repo: str, page_id: int, request: Request, body: dict = Body(default={})):
     """Update a private page."""
 
     from app.auth.session import SessionManager
@@ -251,10 +247,6 @@ async def update_private_page(owner: str, repo: str, page_id: int, request: Requ
     user = SessionManager.decode_session(request.cookies.get("flowdeck_session", ""))
     if not user:
         return JSONResponse({"error": "Not authenticated"}, status_code=401)
-    try:
-        body = await request.json()
-    except Exception:
-        body = {}
     title = body.get("title", "").strip()
     content = body.get("content", "")
     with get_conn() as conn:
@@ -306,7 +298,7 @@ async def sync_labels(request: Request, owner: str, repo: str):
     """Sync Gitea labels to FlowDeck tags for the current user."""
     from app.auth.session import get_current_user as gcu
     from app.db import get_conn
-    user = await gcu(request)
+    user = gcu(request)
     if not user:
         return JSONResponse({"error": "Not authenticated"}, status_code=401)
     gitea = _require_gitea(request)