feat: API request/response logging with admin log viewer

- Add api_logs table (migration 0007) and ApiLog model
- Add web/lib/api_logger.py — httpx wrapper that records every outbound call
- Wire api_logger into vk_sync, vk_catalog, and connections test endpoints
- Add /admin/logs page with filters (service, method, status, time range, URL search) and expandable request/response detail
- Add "Логи" nav link for admin users

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

web/tasks/vk_catalog.py

@@ -5,9 +5,9 @@ for every connected user and upsert into vk_cached_* tables.
 import logging
 from datetime import datetime, timezone
 
-import httpx
 from celery import shared_task
 
+import web.lib.api_logger as api_logger
 from web.config import settings
 from web.database import SessionLocal
 from web.models.connections import VkCachedAlbum, VkCachedProduct, VkConnection
@@ -21,9 +21,9 @@ def _now() -> datetime:
     return datetime.now(timezone.utc).replace(tzinfo=None)
 
 
-def _vk_get(method: str, params: dict, token: str) -> dict:
+def _vk_get(method: str, params: dict, token: str, user_id: int | None = None) -> dict:
     params = {**params, "access_token": token, "v": settings.VK_API_VERSION}
-    r = httpx.get(f"{VK_API}/{method}", params=params, timeout=20)
+    r = api_logger.get(f"{VK_API}/{method}", user_id=user_id, params=params, timeout=20)
     r.raise_for_status()
     return r.json()
 
@@ -34,7 +34,7 @@ def _sync_user(db, user_id: int, token: str, group_id: str) -> None:
 
     # ── albums ────────────────────────────────────────────────────────────────
     try:
-        data = _vk_get("market.getAlbums", {"owner_id": owner_id, "count": 100}, token)
+        data = _vk_get("market.getAlbums", {"owner_id": owner_id, "count": 100}, token, user_id=user_id)
     except Exception as e:
         logger.warning("user=%s vk fetch albums failed: %s", user_id, e)
         return
@@ -83,6 +83,7 @@ def _sync_user(db, user_id: int, token: str, group_id: str) -> None:
                 "market.get",
                 {"owner_id": owner_id, "count": 200, "offset": offset, "extended": 1},
                 token,
+                user_id=user_id,
             )
         except Exception as e:
             logger.warning("user=%s vk fetch products (extended) failed: %s", user_id, e)