feat: implement dashboard view and enhance sidebar navigation

- Added a new DashboardView component for improved project management.
- Updated sidebar navigation to redirect to the dashboard instead of the home page.
- Removed ProjectActions from the sidebar for a cleaner interface.
- Enhanced BoardView to conditionally render the WorktreePanel based on visibility settings.
- Introduced worktree panel visibility management per project in the app store.
- Updated project settings to include worktree panel visibility and favorite status.
- Adjusted navigation logic to ensure users are directed to the appropriate view based on project state.

apps/ui/src/lib/electron.ts

@@ -3003,6 +3003,7 @@ export interface Project {
   path: string;
   lastOpened?: string;
   theme?: string; // Per-project theme override (uses ThemeMode from app-store)
+  isFavorite?: boolean; // Pin project to top of dashboard
 }
 
 export interface TrashedProject extends Project {

apps/ui/src/lib/http-api-client.ts

@@ -1951,6 +1951,7 @@ export class HttpApiClient implements ElectronAPI {
           cardBorderOpacity: number;
           hideScrollbar: boolean;
         };
+        worktreePanelVisible?: boolean;
         lastSelectedSessionId?: string;
       };
       error?: string;