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/api/dashboard.ts

@@ -26,6 +26,7 @@ export const dashboardApi = {
     const params = new URLSearchParams();
     if (limit) params.set("limit", String(limit));
     if (search) params.set("search", search);
+    // Backend reads req.query.guild_id (snake_case) — see createDashboardRouter in dashboard.routes.ts
     if (guildId) params.set("guild_id", guildId);
     const qs = params.toString();
     return api.get<PaginatedChannels>(

services/frontend/src/lib/api/messages.ts

@@ -8,6 +8,7 @@ export const messagesApi = {
     channelId?: string,
     cursor?: string,
   ) => {
+    // Backend messageQuerySchema expects camelCase guildId (see messages.schema.ts)
     const params = new URLSearchParams({ guildId });
     if (limit) params.set("limit", String(limit));
     if (channelId) params.set("channelId", channelId);
@@ -31,6 +32,7 @@ export const messagesApi = {
     api.get<MessageRecord>(`/api/messages/detail/${id}`),
 
   getImages: (guildId: string, limit?: number) => {
+    // Backend reads req.query.guildId (camelCase) — see handleGetImageMessages in messages.controller.ts
     const params = new URLSearchParams({ guildId });
     if (limit) params.set("limit", String(limit));
     return api.get<{ data: MessageRecord[]; nextCursor: string | null }>(