Add image file handling in PublicFileViewer and update publicFileShareHandler for image viewing

b0esche_cloud/lib/pages/public_file_viewer.dart

@@ -125,6 +125,11 @@ class _PublicFileViewerState extends State<PublicFileViewer> {
     return mimeType.toString().startsWith('audio/');
   }
 
+  bool _isImageFile() {
+    final mimeType = _fileData?['capabilities']?['mimeType'] ?? '';
+    return mimeType.toString().startsWith('image/');
+  }
+
   bool _isPdfFile() {
     final mimeType = _fileData?['capabilities']?['mimeType'] ?? '';
     return mimeType == 'application/pdf' ||
@@ -208,6 +213,16 @@ class _PublicFileViewerState extends State<PublicFileViewer> {
         fileName: _fileData!['fileName'],
         viewerId: 'public-audio-${widget.token.hashCode}',
       );
+    } else if (_isImageFile()) {
+      return Expanded(
+        child: FileViewerDispatch.buildFileViewer(
+          context,
+          viewUrl,
+          _fileData?['capabilities']?['mimeType'],
+          fileName: _fileData!['fileName'],
+          viewerId: 'public-image-${widget.token.hashCode}',
+        ),
+      );
     } else if (_isDocumentFile()) {
       if (kIsWeb) {
         // Use Collabora viewer for web

go_cloud/internal/http/routes.go

@@ -3006,7 +3006,7 @@ func publicFileShareHandler(w http.ResponseWriter, r *http.Request, db *database
 	}
 
 	// Set view URL for PDFs, videos, audio, and documents (for inline viewing)
-	if isPdf || strings.HasPrefix(mimeType, "video/") || strings.HasPrefix(mimeType, "audio/") {
+	if isPdf || strings.HasPrefix(mimeType, "video/") || strings.HasPrefix(mimeType, "audio/") || strings.HasPrefix(mimeType, "image/") {
 		viewerSession["viewUrl"] = viewPath
 	} else if strings.Contains(mimeType, "document") || strings.Contains(mimeType, "word") || strings.Contains(mimeType, "spreadsheet") || strings.Contains(mimeType, "presentation") {
 		// Use Collabora for document viewing