- Integrated `SessionProvider` from `next-auth/react` to manage user sessions.
- Updated `AppSidebar` to use `SessionProvider` and reflect user data.
- Modified `NavUser` to display user info based on session, with default fallback.
- Replaced the default Gitea logo URL with a local image path to ensure the logo is displayed correctly.
- The default URL `https://authjs.dev/img/providers/gitea.svg` is not supported, so a local image is used instead.