- Added the ability to archive and unarchive chat threads, enhancing user interaction with chat items.
- Introduced a new `handleChatArchive` function to manage the archiving state and provide user feedback via toast notifications.
- Updated the `ChatItem` type to include an `archived` property for tracking the archive status.
- Modified relevant components to support the new archiving feature, including `ChatListItem`, `Sidebar`, and `MobileSidebar`.
- Removed unused type import from `AllPrivateChatsSidebar` and `AllSharedChatsSidebar`.
- Adjusted class names for icons in sidebar components to enhance visual consistency.
- Updated `SidebarSection` to remove unnecessary gap classes for cleaner layout.
- Changed sync version in `client.ts` to v2 for user-specific database architecture.
- Modified search chat placeholder text in `en.json` for clarity.