made tiny updates

packages/app/package.json

@@ -27,9 +27,13 @@
     "@pierre/trees": "1.0.0-beta.3",
     "@supabase/supabase-js": "^2.0.0",
     "@tanstack/react-query": "^5.62.0",
+    "@trpc/client": "^11.17.0",
+    "@trpc/react-query": "^11.17.0",
+    "@trpc/server": "^11.17.0",
     "next": "^15.1.0",
     "react": "^19.0.0",
     "react-dom": "^19.0.0",
+    "zod": "^3.25.76",
     "zustand": "^5.0.0"
   },
   "devDependencies": {