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>

frontend/src/components/SearchBar.tsx

@@ -19,18 +19,18 @@ export default function SearchBar({ onSearch, isLoading }: SearchBarProps) {
   };
 
   return (
-    <form onSubmit={handleSubmit} className="flex gap-2 items-center">
+    <form onSubmit={handleSubmit} className="flex gap-1.5 items-center">
       <input
         type="text"
         value={query}
         onChange={(e) => setQuery(e.target.value)}
-        placeholder="식당, 지역, 음식 종류..."
-        className="flex-1 px-4 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 text-sm"
+        placeholder="식당, 지역, 음식..."
+        className="flex-1 min-w-0 px-3 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 text-sm"
       />
       <select
         value={mode}
         onChange={(e) => setMode(e.target.value as typeof mode)}
-        className="px-3 py-2 border border-gray-300 rounded-lg text-sm bg-white"
+        className="shrink-0 px-2 py-2 border border-gray-300 rounded-lg text-sm bg-white"
       >
         <option value="hybrid">통합</option>
         <option value="keyword">키워드</option>
@@ -39,7 +39,7 @@ export default function SearchBar({ onSearch, isLoading }: SearchBarProps) {
       <button
         type="submit"
         disabled={isLoading || !query.trim()}
-        className="px-4 py-2 bg-blue-600 text-white rounded-lg hover:bg-blue-700 disabled:opacity-50 text-sm"
+        className="shrink-0 px-3 py-2 bg-blue-600 text-white rounded-lg hover:bg-blue-700 disabled:opacity-50 text-sm"
       >
         {isLoading ? "..." : "검색"}
       </button>