Improve guest photo downloads with preview/original variants

resources/js/guest-v2/__tests__/GalleryScreen.test.tsx

@@ -1,6 +1,6 @@
 import React from 'react';
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';
-import { render, screen, waitFor } from '@testing-library/react';
+import { fireEvent, render, screen, waitFor } from '@testing-library/react';
 
 const setSearchParamsMock = vi.fn();
 const pushGuestToastMock = vi.fn();
@@ -199,4 +199,40 @@ describe('GalleryScreen', () => {
       expect(screen.queryByLabelText('AI Magic Edit')).not.toBeInTheDocument()
     );
   });
+
+  it('uses download_url when downloading from lightbox', async () => {
+    fetchGalleryMock.mockResolvedValue({
+      data: [{
+        id: 123,
+        thumbnail_url: '/storage/demo-thumb.jpg',
+        download_url: '/api/v1/gallery/demo/photos/123/download?signature=abc',
+        likes_count: 2,
+      }],
+    });
+    fetchPhotoMock.mockRejectedValue(Object.assign(new Error('not found'), { status: 404 }));
+
+    const originalCreateElement = document.createElement.bind(document);
+    const clickSpy = vi.fn();
+    let createdLink: HTMLAnchorElement | null = null;
+
+    const createElementSpy = vi.spyOn(document, 'createElement').mockImplementation((tagName: string) => {
+      const element = originalCreateElement(tagName) as HTMLElement;
+      if (tagName.toLowerCase() === 'a') {
+        createdLink = element as HTMLAnchorElement;
+        (createdLink as any).click = clickSpy;
+      }
+      return element;
+    });
+
+    render(<GalleryScreen />);
+
+    await waitFor(() => expect(fetchGalleryMock).toHaveBeenCalled());
+    const downloadButton = await screen.findByRole('button', { name: /download/i });
+    fireEvent.click(downloadButton);
+
+    expect(clickSpy).toHaveBeenCalled();
+    expect(createdLink?.getAttribute('href')).toBe('/api/v1/gallery/demo/photos/123/download?signature=abc');
+
+    createElementSpy.mockRestore();
+  });
 });