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/api/main.py

@@ -1,9 +1,11 @@
 """FastAPI application entry point."""
 
+from __future__ import annotations
+
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
 
-from api.routes import restaurants, channels, videos, search, auth, reviews
+from api.routes import restaurants, channels, videos, search, auth, reviews, admin_users, stats
 
 app = FastAPI(
     title="Tasteby API",
@@ -25,6 +27,8 @@ app.include_router(videos.router, prefix="/api/videos", tags=["videos"])
 app.include_router(search.router, prefix="/api/search", tags=["search"])
 app.include_router(auth.router, prefix="/api/auth", tags=["auth"])
 app.include_router(reviews.router, prefix="/api", tags=["reviews"])
+app.include_router(admin_users.router, prefix="/api/admin/users", tags=["admin-users"])
+app.include_router(stats.router, prefix="/api/stats", tags=["stats"])
 
 
 @app.get("/api/health")