Add CORS expose headers for PDF viewer compatibility

b0esche_cloud/lib/pages/home_page.dart

@@ -140,9 +140,9 @@ class _HomePageState extends State<HomePage> with TickerProviderStateMixin {
                           onPressed: () {
                             final name = controller.text.trim();
                             if (name.isNotEmpty) {
-                              BlocProvider.of<OrganizationBloc>(context).add(
-                                CreateOrganization(name),
-                              );
+                              BlocProvider.of<OrganizationBloc>(
+                                context,
+                              ).add(CreateOrganization(name));
                               Navigator.of(context).pop();
                             }
                           },

go_cloud/internal/middleware/middleware.go

@@ -43,6 +43,7 @@ func CORS(allowedOrigins string) func(http.Handler) http.Handler {
 			}
 			w.Header().Set("Access-Control-Allow-Methods", "GET, POST, PUT, PATCH, DELETE, OPTIONS")
 			w.Header().Set("Access-Control-Allow-Headers", "Content-Type, Authorization")
+			w.Header().Set("Access-Control-Expose-Headers", "Content-Length, Content-Type, Content-Disposition")
 			w.Header().Set("Access-Control-Max-Age", "3600")
 
 			if r.Method == http.MethodOptions {