fix: A25 + A21 (partiel) — plus d'exception muque, transaction protégée (v7.3.8)

- A25 — 84 `except Exception: pass/…` → `logger.exception("<fonction>")`
  (19 fichiers : api_v2 30, dashboard 10, board 7, sites 5, workspace 5,
  api_v2_helpers 5, …) ; `logger` ajouté là où il manquait (api_v2_helpers,
  sites + `import logging`)
- A25 critique — les `try` autour de `materialize_properties` supprimés dans
  `create_collection_v2` ET `apply_db_template_v2` : un échec interrompt la
  transaction au lieu de commiter une collection sans schéma
- test `test_collection_rollback_when_materialize_fails` (Bearer v2, monkeypatch
  qui lève, assertions : RuntimeError + 0 ligne commitée)
- A21 partiel — `PRAGMA busy_timeout=5000` dans `get_conn()` (point d'entrée
  unique) ; commentaire `ponytail:` : le wrapper async + les 510 call sites
  restent à migrer module par module
- suite **1028/1028** · `ruff check app tests` OK

app/routers/sites.py

@@ -12,6 +12,7 @@ from __future__ import annotations
 import hashlib
 import html
 import json
+import logging
 import re
 import secrets
 import time
@@ -35,6 +36,8 @@ from app.services.api_v2_helpers import (
     row_to_dict,
 )
 
+logger = logging.getLogger(__name__)
+
 router = APIRouter(tags=["sites"])
 
 _SLUG_RE = re.compile(r"^[a-z0-9-]{3,50}$")
@@ -160,7 +163,7 @@ def _render_page_html(page: dict) -> str:
                 from app.services.synced_blocks import resolve_synced_block
                 blocks = resolve_synced_block(blocks)
             except Exception:
-                pass
+                logger.exception("_render_page_html")
             titles: dict = {}
             try:
                 from app.db import get_conn as _gc
@@ -223,7 +226,7 @@ def _track_view(site_id: int) -> None:
             )
             conn.commit()
     except Exception:
-        pass
+        logger.exception("_track_view")
 
 
 def _form_config(conn, collection_id: int) -> dict:
@@ -589,12 +592,14 @@ async def public_site_auth(request: Request, slug: str):
         try:
             password = (await request.json()).get("password", "")
         except Exception:
+            logger.exception("public_site_auth")
             password = ""
     else:
         try:
             form = await request.form()
             password = form.get("password", "")
         except Exception:
+            logger.exception("public_site_auth")
             password = ""
     if not verify_password(password or "", site["password_hash"] or ""):
         raise HTTPException(401, "Wrong password")
@@ -781,7 +786,7 @@ async def submit_form(request: Request, token: str):
         except HTTPException:
             raise
         except Exception:
-            pass
+            logger.exception("submit_form")
         title = str(data.get(by_name[fields[0]]["name"], "Form response") if fields else "Form response")[:200]
         cur = conn.execute(
             """INSERT INTO collection_pages (collection_id, title, property_values_json)
@@ -808,12 +813,12 @@ async def submit_form(request: Request, token: str):
             except Exception:
                 continue
     except Exception:
-        pass
+        logger.exception("submit_form")
     try:
         from app.services.automations import fire_event as _fire
         await _fire("form.submitted", {"collection_id": coll["id"], "row_id": row_id})
     except Exception:
-        pass
+        logger.exception("submit_form")
     if "application/json" in ctype:
         return {"status": "ok", "row_id": row_id,
                 "message": cfg.get("success_message") or "Merci !"}