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

.dockerignore

@@ -0,0 +1,14 @@
+node_modules
+.next
+dist
+build
+.turbo
+.git
+*.md
+.env*
+.vscode
+.idea
+coverage
+test-results
+playwright-report
+pocketbase/pb_data