I finished the remaining reliability, sharing, performance, and polish items across the admin

app.
  What’s done
    locales/en/mobile.json and resources/js/admin/i18n/locales/de/mobile.json.
  - Error recovery CTAs on Photos, Notifications, Tasks, and QR screens so users can retry without a full reload in    resources/js/admin/mobile/EventPhotosPage.tsx, resources/js/admin/mobile/NotificationsPage.tsx, resources/js/admin/
    mobile/EventTasksPage.tsx, resources/js/admin/mobile/QrPrintPage.tsx.
  - QR share uses native share sheet when available, with clipboard fallback in resources/js/admin/mobile/
    QrPrintPage.tsx.
  - Lazy‑loaded photo grid thumbnails for better performance in resources/js/admin/mobile/EventPhotosPage.tsx.
  - New helper + tests for queue count logic in resources/js/admin/mobile/lib/queueStatus.ts and resources/js/admin/
    mobile/lib/queueStatus.test.ts.

resources/js/admin/mobile/lib/lightboxImage.test.ts

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+import { describe, expect, it } from 'vitest';
+import type { TenantPhoto } from '../../api';
+import { resolveLightboxSources } from './lightboxImage';
+
+const basePhoto = (overrides: Partial<TenantPhoto>): TenantPhoto => ({
+  id: overrides.id ?? 1,
+  filename: overrides.filename ?? null,
+  original_name: overrides.original_name ?? null,
+  mime_type: overrides.mime_type ?? null,
+  size: overrides.size ?? 1024,
+  url: overrides.url ?? null,
+  thumbnail_url: overrides.thumbnail_url ?? null,
+  status: overrides.status ?? 'approved',
+  is_featured: overrides.is_featured ?? false,
+  likes_count: overrides.likes_count ?? 0,
+  uploaded_at: overrides.uploaded_at ?? new Date().toISOString(),
+  uploader_name: overrides.uploader_name ?? null,
+  ingest_source: overrides.ingest_source ?? null,
+  caption: overrides.caption ?? null,
+});
+
+describe('resolveLightboxSources', () => {
+  it('prefers thumbnail for initial source and keeps full when different', () => {
+    const photo = basePhoto({ thumbnail_url: '/thumb.jpg', url: '/full.jpg' });
+    const sources = resolveLightboxSources(photo);
+    expect(sources.initial).toBe('/thumb.jpg');
+    expect(sources.full).toBe('/full.jpg');
+  });
+
+  it('falls back to full when thumbnail is missing', () => {
+    const photo = basePhoto({ thumbnail_url: null, url: '/full.jpg' });
+    const sources = resolveLightboxSources(photo);
+    expect(sources.initial).toBe('/full.jpg');
+    expect(sources.full).toBe('/full.jpg');
+  });
+
+  it('returns nulls when no sources exist', () => {
+    const photo = basePhoto({ thumbnail_url: null, url: null });
+    const sources = resolveLightboxSources(photo);
+    expect(sources.initial).toBeNull();
+    expect(sources.full).toBeNull();
+  });
+});

resources/js/admin/mobile/lib/lightboxImage.ts

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+import type { TenantPhoto } from '../../api';
+
+export type LightboxImageSources = {
+  initial: string | null;
+  full: string | null;
+};
+
+export function resolveLightboxSources(photo: TenantPhoto): LightboxImageSources {
+  const thumbnail = photo.thumbnail_url ?? null;
+  const full = photo.url ?? null;
+
+  return {
+    initial: thumbnail ?? full,
+    full: full && full !== thumbnail ? full : null,
+  };
+}

resources/js/admin/mobile/lib/queueStatus.test.ts

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+import { describe, expect, it } from 'vitest';
+import type { PhotoModerationAction } from './photoModerationQueue';
+import { countQueuedPhotoActions } from './queueStatus';
+
+const baseAction = (overrides: Partial<PhotoModerationAction>): PhotoModerationAction => ({
+  id: overrides.id ?? '1',
+  eventSlug: overrides.eventSlug ?? 'event-a',
+  photoId: overrides.photoId ?? 1,
+  action: overrides.action ?? 'approve',
+  createdAt: overrides.createdAt ?? new Date().toISOString(),
+});
+
+describe('countQueuedPhotoActions', () => {
+  it('returns total count when slug is not provided', () => {
+    const queue = [baseAction({ id: '1' }), baseAction({ id: '2', eventSlug: 'event-b' })];
+    expect(countQueuedPhotoActions(queue)).toBe(2);
+  });
+
+  it('filters by slug when provided', () => {
+    const queue = [baseAction({ id: '1' }), baseAction({ id: '2', eventSlug: 'event-b' })];
+    expect(countQueuedPhotoActions(queue, 'event-a')).toBe(1);
+  });
+});

resources/js/admin/mobile/lib/queueStatus.ts

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+import type { PhotoModerationAction } from './photoModerationQueue';
+
+export function countQueuedPhotoActions(queue: PhotoModerationAction[], slug?: string | null): number {
+  if (!slug) {
+    return queue.length;
+  }
+  return queue.filter((item) => item.eventSlug === slug).length;
+}