Add cmd+s support

components/Editor.tsx

@@ -357,10 +357,10 @@ const Editor = () => {
         }
     }, [lang]);
     
-    // Add keyboard shortcut for Ctrl+S
+    // Add keyboard shortcut for Ctrl+S (Windows/Linux) and Cmd+S (macOS)
     useEffect(() => {
         const handleKeyDown = (event: KeyboardEvent) => {
-            if (event.ctrlKey && event.key === 's') {
+            if ((event.ctrlKey || event.metaKey) && event.key === 's') {
                 event.preventDefault();
                 if (action === 'edit') {
                     save();