feat: push notifications, calendar view, photo attachments

- Push notifications: custom SW (injectManifest), usePushNotifications hook,
  push-notify Edge Function, push_subscriptions migration, bell toggle in header
- Calendar view: month-grid CalendarPage + useCalendar hook, scheduled_at column
  migration, datetime field in OrderModal, CalendarDays nav item + route
- Photo attachments: useOrderPhotos hook, photo gallery/upload in OrderModal (edit
  mode), order-photos Storage bucket migration with RLS policies

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

vite.config.js

@@ -6,6 +6,11 @@ export default defineConfig({
   plugins: [
     react(),
     VitePWA({
+      // injectManifest lets us supply our own src/sw.js so we can add
+      // push/notificationclick handlers alongside Workbox precaching.
+      strategies: 'injectManifest',
+      srcDir: 'src',
+      filename: 'sw.js',
       registerType: 'autoUpdate',
       includeAssets: ['favicon.svg', 'favicon.ico', 'apple-touch-icon-180x180.png'],
       manifest: {
@@ -25,15 +30,8 @@ export default defineConfig({
           { src: 'maskable-icon-512x512.png', sizes: '512x512', type: 'image/png', purpose: 'maskable' },
         ],
       },
-      workbox: {
+      injectManifest: {
         globPatterns: ['**/*.{js,css,html,ico,png,svg,woff2}'],
-        runtimeCaching: [
-          {
-            urlPattern: /^https:\/\/fonts\.googleapis\.com\/.*/i,
-            handler: 'CacheFirst',
-            options: { cacheName: 'google-fonts-cache', expiration: { maxEntries: 10, maxAgeSeconds: 60 * 60 * 24 * 365 } },
-          },
-        ],
       },
     }),
   ],