feat(navigation): count open workspace todos and style tab badges as notification dots

frontend/src/lib/types.ts

@@ -233,6 +233,7 @@ export interface DashboardStats {
   tasksOpenCount: number;
   tasksDoneCount: number;
   docsCount: number;
+  docsTodosOpenCount?: number;
   listsCount: number;
   discardedCount: number;
 }