fix(ui): add missing tw-animate-css and shadcn dependencies

These packages are imported in globals.css but were not listed in
package.json, causing CSS build failures on fresh installs.

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

packages/ui/package.json

@@ -43,6 +43,8 @@
   "devDependencies": {
     "@types/react": "catalog:",
     "@types/react-dom": "catalog:",
+    "shadcn": "^4.1.0",
+    "tw-animate-css": "^1.4.0",
     "typescript": "catalog:"
   }
 }