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/frontend/src/lib/ws/types.ts

@@ -36,7 +36,8 @@ export interface WsEventMap {
   voice_recording_stopped: unknown;
   voice_recording_uploaded: VoiceRecording;
   voice_active_user: ActiveSpeaker;
-  voice_pcm_data: { userId: string; pcm: string };
+  /** NOT delivered as JSON — arrives only via onPcm() binary handler as PcmChunk */
+  voice_pcm_data: never;
   voice_analyzed: unknown;
   analysis_queue_status: unknown;
   reaction_added: unknown;