test: update tests to use English translation strings

Tests were asserting against hardcoded German strings that were replaced
with t() calls. Updated to match the English translation values rendered
by TranslationProvider in the test environment.

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

client/src/components/Photos/PhotoUpload.test.tsx

@@ -43,7 +43,7 @@ describe('PhotoUpload', () => {
 
   it('FE-COMP-PHOTOUPLOAD-001: renders dropzone with upload instructions', () => {
     render(<PhotoUpload {...defaultProps} />)
-    expect(screen.getByText('Fotos hier ablegen')).toBeInTheDocument()
+    expect(screen.getByText('Drop photos here')).toBeInTheDocument()
     // Upload icon rendered via lucide-react as SVG
     expect(document.querySelector('svg')).toBeTruthy()
   })
@@ -51,7 +51,7 @@ describe('PhotoUpload', () => {
   it('FE-COMP-PHOTOUPLOAD-002: options section hidden before files are selected', () => {
     render(<PhotoUpload {...defaultProps} />)
     expect(screen.queryByText('Tag verknüpfen')).not.toBeInTheDocument()
-    expect(screen.queryByPlaceholderText('Optionale Beschriftung...')).not.toBeInTheDocument()
+    expect(screen.queryByPlaceholderText('Optional caption...')).not.toBeInTheDocument()
   })
 
   it('FE-COMP-PHOTOUPLOAD-003: upload button is disabled when no files selected', () => {
@@ -66,7 +66,7 @@ describe('PhotoUpload', () => {
     await uploadFiles([makeFile()])
     expect(screen.getByAltText('photo.jpg')).toBeInTheDocument()
     expect(screen.getByText('Tag verknüpfen')).toBeInTheDocument()
-    expect(screen.getByPlaceholderText('Optionale Beschriftung...')).toBeInTheDocument()
+    expect(screen.getByPlaceholderText('Optional caption...')).toBeInTheDocument()
   })
 
   it('FE-COMP-PHOTOUPLOAD-005: file count label updates correctly', async () => {
@@ -120,7 +120,7 @@ describe('PhotoUpload', () => {
     render(<PhotoUpload {...defaultProps} />)
     await uploadFiles([makeFile()])
 
-    await userEvent.type(screen.getByPlaceholderText('Optionale Beschriftung...'), 'Vacation')
+    await userEvent.type(screen.getByPlaceholderText('Optional caption...'), 'Vacation')
 
     await userEvent.click(getSubmitButton())
 

client/src/pages/FilesPage.test.tsx

@@ -100,7 +100,7 @@ describe('FilesPage', () => {
         expect(screen.getByTestId('file-manager')).toBeInTheDocument();
       });
 
-      expect(screen.getByText(/2 Dateien/)).toBeInTheDocument();
+      expect(screen.getByText(/2 files for/i)).toBeInTheDocument();
     });
   });
 
@@ -205,7 +205,7 @@ describe('FilesPage', () => {
         expect(screen.getByTestId('file-manager')).toBeInTheDocument();
       });
 
-      expect(screen.getByRole('heading', { name: /Dateien & Dokumente/i })).toBeInTheDocument();
+      expect(screen.getByRole('heading', { name: /Files & Documents/i })).toBeInTheDocument();
     });
   });
 });

client/src/pages/PhotosPage.test.tsx

@@ -118,7 +118,7 @@ describe('PhotosPage', () => {
         expect(screen.getByTestId('photo-gallery')).toBeInTheDocument();
       });
 
-      expect(screen.getByText(/1 Fotos/)).toBeInTheDocument();
+      expect(screen.getByText(/1 photos for/i)).toBeInTheDocument();
     });
   });
 
@@ -224,7 +224,7 @@ describe('PhotosPage', () => {
         expect(screen.getByTestId('photo-gallery')).toBeInTheDocument();
       });
 
-      expect(screen.getByRole('heading', { name: /fotos/i })).toBeInTheDocument();
+      expect(screen.getByRole('heading', { name: /photos/i })).toBeInTheDocument();
     });
   });
 });