Implement backend API and database services in Docker setup

- Added a new `api` service for the NestJS backend, including health checks and dependencies on PostgreSQL, Redis, and MinIO.
- Introduced PostgreSQL and Redis services with health checks and configurations for data persistence.
- Added MinIO for S3-compatible object storage and a one-shot service to initialize required buckets.
- Updated the Nginx configuration to proxy requests to the new backend API and MinIO storage.
- Enhanced the Dockerfile to support the new API environment variables and configurations.
- Updated the `package.json` and `package-lock.json` to include new dependencies for QR code generation and other utilities.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/main.ts

@@ -4,22 +4,28 @@ import router from './router'
 import App from './App.vue'
 import './style.css'
 import { registerSW } from 'virtual:pwa-register'
+import { initMockMode } from './utils/mock'
 
-const app = createApp(App)
+// Detect backend availability before the app renders.
+// If the backend is unreachable, USE_MOCK is auto-flipped to true
+// so every service/store/composable falls back to mock data.
+initMockMode().then(() => {
+  const app = createApp(App)
 
-app.use(createPinia())
-app.use(router)
+  app.use(createPinia())
+  app.use(router)
 
-app.mount('#app')
+  app.mount('#app')
 
-// Register PWA service worker with auto-update
-const updateSW = registerSW({
-  immediate: true,
-  onNeedRefresh() {
-    // Auto-reload when new content is available
-    updateSW(true)
-  },
-  onOfflineReady() {
-    console.log('App ready to work offline')
-  },
+  // Register PWA service worker with auto-update
+  const updateSW = registerSW({
+    immediate: true,
+    onNeedRefresh() {
+      // Auto-reload when new content is available
+      updateSW(true)
+    },
+    onOfflineReady() {
+      console.log('App ready to work offline')
+    },
+  })
 })