Refactor ShareFileDialog header to improve layout and ensure text overflow handling

b0esche_cloud/lib/widgets/share_file_dialog.dart

@@ -132,17 +132,19 @@ class _ShareFileDialogState extends State<ShareFileDialog> {
             // Header
             Row(
               children: [
-                Text(
-                  'Share "${widget.fileName}"',
-                  style: TextStyle(
-                    color: AppTheme.primaryText,
-                    fontSize: 20,
-                    fontWeight: FontWeight.bold,
+                Expanded(
+                  child: Text(
+                    'Share "${widget.fileName}"',
+                    style: TextStyle(
+                      color: AppTheme.primaryText,
+                      fontSize: 20,
+                      fontWeight: FontWeight.bold,
+                    ),
+                    maxLines: 1,
+                    overflow: TextOverflow.ellipsis,
                   ),
-                  maxLines: 1,
-                  overflow: TextOverflow.ellipsis,
                 ),
-                const Spacer(),
+                const SizedBox(width: 16),
                 IconButton(
                   onPressed: () => Navigator.of(context).pop(),
                   icon: Icon(Icons.close, color: AppTheme.secondaryText),

go_cloud/internal/http/routes.go

@@ -266,10 +266,10 @@ func NewRouter(cfg *config.Config, db *database.DB, jwtManager *jwt.Manager, aut
 				r.With(middleware.Permission(db, auditLogger, permission.FileRead)).Get("/share", func(w http.ResponseWriter, req *http.Request) {
 					getFileShareLinkHandler(w, req, db)
 				})
-				r.With(middleware.Permission(db, auditLogger, permission.FileWrite)).Post("/share", func(w http.ResponseWriter, req *http.Request) {
+				r.With(middleware.Permission(db, auditLogger, permission.FileRead)).Post("/share", func(w http.ResponseWriter, req *http.Request) {
 					createFileShareLinkHandler(w, req, db)
 				})
-				r.With(middleware.Permission(db, auditLogger, permission.FileWrite)).Delete("/share", func(w http.ResponseWriter, req *http.Request) {
+				r.With(middleware.Permission(db, auditLogger, permission.FileRead)).Delete("/share", func(w http.ResponseWriter, req *http.Request) {
 					revokeFileShareLinkHandler(w, req, db)
 				})
 				// WOPI session for org files