feat: merge admin routes into unified frontend

package-lock.json

@@ -8,12 +8,12 @@
       "name": "aivideo-monorepo",
       "version": "0.1.0",
       "workspaces": [
-        "frontend-web",
-        "frontend-admin"
+        "frontend-web"
       ]
     },
     "frontend-admin": {
       "version": "0.1.0",
+      "extraneous": true,
       "dependencies": {
         "@tanstack/react-query": "^5.90.5",
         "clsx": "^2.1.1",
@@ -3670,10 +3670,6 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
-    "node_modules/frontend-admin": {
-      "resolved": "frontend-admin",
-      "link": true
-    },
     "node_modules/frontend-web": {
       "resolved": "frontend-web",
       "link": true