refactor: migrate to monorepo structure with Docker, PocketBase, and e2e tests

- Reorganize into apps/, packages/, docs/, e2e/, pocketbase/ directories
- Add Dockerfiles for web, worker, and PocketBase services
- Add docker-compose.yml for local orchestration
- Add turbo.json for monorepo task management
- Add Playwright e2e test infrastructure
- Add PocketBase backend with migrations
- Remove Vite/Next.js/ESLint/PostCSS config files
- Update package.json with workspace dependencies
- Add .env.example and .dockerignore

apps/web/components/dashboard/widgets/quick-add-widget.tsx

@@ -0,0 +1,52 @@
+'use client';
+
+import { Plus } from 'lucide-react';
+import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
+import { Button } from '@/components/ui/button';
+
+export function QuickAddWidget() {
+  function handleQuickAdd() {
+    document.dispatchEvent(
+      new KeyboardEvent('keydown', { key: 'k', metaKey: true })
+    );
+  }
+
+  return (
+    <Card className="h-full border-0 shadow-none">
+      <CardHeader className="p-0 pb-3">
+        <CardTitle className="flex items-center gap-2 text-base">
+          <Plus className="h-4 w-4" aria-hidden="true" />
+          Quick Add
+        </CardTitle>
+      </CardHeader>
+      <CardContent className="p-0">
+        <div className="flex flex-col gap-2">
+          <Button
+            variant="outline"
+            size="sm"
+            className="justify-start"
+            onClick={handleQuickAdd}
+          >
+            New task
+          </Button>
+          <Button
+            variant="outline"
+            size="sm"
+            className="justify-start"
+            onClick={handleQuickAdd}
+          >
+            New habit
+          </Button>
+          <Button
+            variant="outline"
+            size="sm"
+            className="justify-start"
+            onClick={handleQuickAdd}
+          >
+            New note
+          </Button>
+        </div>
+      </CardContent>
+    </Card>
+  );
+}