feat: enhance user authentication and profile retrieval

- Updated GET handler in auth route to fetch user UUID from cookie using AuthService.
- Improved error handling for unauthenticated and non-existent users.
- Added team name retrieval for the user profile, with fallback handling.
- Refactored AuthClient to return detailed user information including team details.
- Enhanced navigation component to use a dropdown menu for user actions, improving UI/UX.
- Implemented loading state in UserContext to manage user info fetching.

components/account/index.ts

@@ -0,0 +1 @@
+export { AccountForm } from "./account-form";