Add admin features, responsive UI, user reviews, visit stats, and channel-colored markers

- Admin: video management with Google Maps match status, manual restaurant mapping, restaurant remap on name change
- Admin: user management tab with favorites/reviews detail
- Admin: channel deletion fix for IDs with slashes
- Frontend: responsive mobile layout (map top, list bottom, 2-row header)
- Frontend: channel-colored map markers with legend
- Frontend: my reviews list, favorites toggle, visit counter overlay
- Frontend: force light mode for dark theme devices
- Backend: visit tracking (site_visits table), user reviews endpoint
- Backend: bulk transcript/extract streaming, geocode key fixes
- Nginx config for production deployment

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

backend/core/review.py

@@ -131,13 +131,15 @@ def get_user_reviews(
     limit: int = 20,
     offset: int = 0,
 ) -> list[dict]:
-    """List reviews by a specific user."""
+    """List reviews by a specific user, including restaurant name."""
     sql = """
         SELECT r.id, r.user_id, r.restaurant_id, r.rating, r.review_text,
                r.visited_at, r.created_at, r.updated_at,
-               u.nickname, u.avatar_url
+               u.nickname, u.avatar_url,
+               rest.name AS restaurant_name
         FROM user_reviews r
         JOIN tasteby_users u ON u.id = r.user_id
+        LEFT JOIN restaurants rest ON rest.id = r.restaurant_id
         WHERE r.user_id = :user_id
         ORDER BY r.created_at DESC
         OFFSET :off ROWS FETCH NEXT :lim ROWS ONLY
@@ -149,7 +151,12 @@ def get_user_reviews(
             "off": offset,
             "lim": limit,
         })
-        return [_row_to_dict(row) for row in cur.fetchall()]
+        rows = []
+        for row in cur.fetchall():
+            d = _row_to_dict(row)
+            d["restaurant_name"] = row[10]
+            rows.append(d)
+        return rows
 
 
 def get_restaurant_avg_rating(restaurant_id: str) -> dict: