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/keyboard-shortcuts-provider.tsx

@@ -0,0 +1,15 @@
+'use client';
+
+import { useKeyboardShortcuts } from '@/hooks/use-keyboard-shortcuts';
+import { ShortcutsHelp } from '@/components/shortcuts-help';
+
+export function KeyboardShortcutsProvider({ children }: { children: React.ReactNode }) {
+  useKeyboardShortcuts();
+
+  return (
+    <>
+      {children}
+      <ShortcutsHelp />
+    </>
+  );
+}