diff --git a/fix_editor.py b/fix_editor.py
new file mode 100644
index 0000000..dfcbc46
--- /dev/null
+++ b/fix_editor.py
@@ -0,0 +1,77 @@
+import sys
+
+with open(sys.argv[1], 'r') as f:
+    content = f.read()
+
+# Replace NoteEditor to use ref-based onChange (no re-render on keystroke)
+old_editor = '''const NoteEditor = memo(function NoteEditor({ content, onChange, placeholder = "Start writing..." }: { content: string; onChange: (html: string) => void; placeholder?: string }) {
+  const editorRef = useRef<HTMLDivElement>(null);
+  const [isPlaceholder, setIsPlaceholder] = useState(!content);
+
+  useEffect(() => {
+    if (editorRef.current && !editorRef.current.innerHTML) {
+      editorRef.current.innerHTML = content || "";
+    }
+  }, [content]);
+
+  const handleInput = () => {
+    const html = editorRef.current?.innerHTML || "";
+    setIsPlaceholder(!html || html === "<br>");
+    onChange(html);
+  };
+
+  return (
+    <div className="relative min-h-[300px]">
+      {isPlaceholder && (
+        <div className="absolute top-0 left-0 text-muted-foreground pointer-events-none p-3 text-sm">{placeholder}</div>
+      )}
+      <div
+        ref={editorRef}
+        contentEditable
+        className="prose prose-sm dark:prose-invert max-w-none p-3 focus:outline-none min-h-[300px]"
+        onInput={handleInput}
+        suppressContentEditableWarning
+      />
+    </div>
+  );
+});'''
+
+new_editor = '''const NoteEditor = memo(function NoteEditor({ content, onChange, placeholder = "Start writing..." }: { content: string; onChange: (html: string) => void; placeholder?: string }) {
+  const editorRef = useRef<HTMLDivElement>(null);
+  const onChangeRef = useRef(onChange);
+  onChangeRef.current = onChange;
+  const [isPlaceholder, setIsPlaceholder] = useState(!content);
+
+  useEffect(() => {
+    if (editorRef.current && !editorRef.current.innerHTML) {
+      editorRef.current.innerHTML = content || "";
+    }
+  }, [content]);
+
+  const handleInput = useCallback(() => {
+    const html = editorRef.current?.innerHTML || "";
+    setIsPlaceholder(!html || html === "<br>");
+    onChangeRef.current(html);
+  }, []);
+
+  return (
+    <div className="relative min-h-[300px]">
+      {isPlaceholder && (
+        <div className="absolute top-0 left-0 text-muted-foreground pointer-events-none p-3 text-sm">{placeholder}</div>
+      )}
+      <div
+        ref={editorRef}
+        contentEditable
+        className="prose prose-sm dark:prose-invert max-w-none p-3 focus:outline-none min-h-[300px]"
+        onInput={handleInput}
+        suppressContentEditableWarning
+      />
+    </div>
+  );
+});'''
+
+content = content.replace(old_editor, new_editor, 1)
+
+with open(sys.argv[1], 'w') as f:
+    f.write(content)
+print('Done')