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.

services/backend/src/modules/mascot-chat/mascot-chat.controller.ts

@@ -56,7 +56,7 @@ export const handleMascotChat = asyncHandler(
 export const getMascotChatHistory = asyncHandler(
   async (req: Request, res: Response) => {
     const userId = (req as AuthenticatedRequest).userId || "anonymous";
-    const limit = Math.min(parseInt(req.query.limit as string) || 50, 100);
+    const limit = Math.min(parseInt(req.query.limit as string, 10) || 50, 100);
 
     const history = await mascotChatService.getChatHistory(userId, limit);