- Create `+page.svelte` for managing user profiles, including name, avatar, and password updates.
- Add `Avatar.svelte` component for rendering user avatars with Gravatar and fallback initials support.
- Implement backend APIs for fetching and updating user profiles (`/users/profile`).
- Add support for avatar uploads with file validation (max size: 5MB).
- Update `FloorplanViewer.svelte` to display user names and avatars in reservations.
- Introduce utilities for Gravatar URLs and user avatar management (`getGravatarUrl`, `getInitials`).