feat(viewer): album page with locale fallback and timezone display

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

apps/viewer/src/i18n/locales/en.ts

@@ -1,12 +1,20 @@
 export default {
   app: { title: 'Live Gallery' },
   home: { hint: 'Open an album link to start viewing' },
-  album: { emptyNotice: 'Photos coming soon' },
+  album: {
+    loading: 'Loading…',
+    emptyNotice: 'Photos coming soon',
+    time: 'Time',
+    venue: 'Venue',
+    categories: 'Categories',
+    retry: 'Retry',
+  },
   lang: { switch: 'Switch language' },
   route: { tokenLabel: 'Album token', photoLabel: 'Photo' },
   errors: {
     albumNotFound: 'Album not found',
-    albumNotAvailable: 'Album unavailable',
+    // ALBUM_NOT_PUBLIC 专用：offline / disabled / ghost token 同码（防枚举）。
+    albumNotAvailable: 'Album not found or offline',
     photoNotFound: 'Photo not found',
     notFound: 'Page not found',
     authExpired: 'Session expired',