feat: update dependencies and improve dashboard functionality

- Added new dependencies for Next.js and lucide-react in pnpm-workspace.yaml.
- Refactored DashboardPage component to improve readability and error handling.
- Enhanced Header component to display error status with an alert icon.
- Updated MobileTabBar and Sidebar components to use a centralized tabs definition.
- Improved ChannelsView in dashboard-panel to handle channel fetching more cleanly.
- Fixed ActiveSpeaker type to use camelCase for userId.
- Updated MessagesPanel to handle guildId checks more gracefully.
- Adjusted API calls in dashboard and messages to align with backend expectations.
- Refined type definitions across various interfaces for consistency and clarity.

package.json

@@ -23,7 +23,7 @@
     "install:yt-dlp": "sh scripts/install-yt-dlp.sh"
   },
   "devDependencies": {
-    "@biomejs/biome": "latest",
+    "@biomejs/biome": "^2.5.5",
     "drizzle-kit": "^0.31.10",
     "tsx": "^4.22.2",
     "typescript": "^5.9.3"