fix: store menu 404, logger crash, platform detection, and sidebar UX

- Fix store menu API URL (/store/menu/render/store, not /store/core/...)
- Fix storeLog/merchantLog fallback to console object instead of console.log
- Embed platform_id/platform_code in store JWT from URL context at login
- Use token_platform_id in store menu endpoint with DB fallback for old tokens
- Add "Menu unavailable" warning in sidebar fallback for all three frontends
- Standardize admin section default to all-open (consistent with store/merchant)

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

app/modules/core/routes/api/store_menu.py

@@ -95,8 +95,10 @@ async def get_rendered_store_menu(
     # Get the store from the JWT token's store context
     store = store_service.get_store_by_id(db, current_user.token_store_id)
 
-    # Resolve the store's platform via service layer
-    platform_id = menu_service.get_store_primary_platform_id(db, store.id)
+    # Platform from JWT (set at login from URL context), fall back to DB for old tokens
+    platform_id = current_user.token_platform_id
+    if platform_id is None:
+        platform_id = menu_service.get_store_primary_platform_id(db, store.id)
 
     # Get filtered menu with platform visibility and store_code interpolation
     menu = menu_service.get_menu_for_rendering(