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/instrumentation.ts

@@ -0,0 +1,12 @@
+// This file is loaded by Next.js at startup
+// See: https://nextjs.org/docs/app/building-your-application/optimizing/instrumentation
+
+export async function register() {
+  if (process.env.NEXT_RUNTIME === 'nodejs') {
+    // Initialize webhook service
+    const { initializeWebhookService } = await import('./lib/services/webhook-service');
+    initializeWebhookService();
+
+    console.log('[Project E] Webhook service initialized');
+  }
+}