feat(code): disable editing in diff viewer

Author: adboio

apps/code/src/renderer/features/code-editor/components/CodeMirrorDiffEditor.tsx

@@ -38,7 +38,7 @@ export function CodeMirrorDiffEditor({
   const toggleHideWhitespaceChanges = useDiffViewerStore(
     (s) => s.toggleHideWhitespaceChanges,
   );
-  const extensions = useEditorExtensions(filePath, !onContentChange, true);
+  const extensions = useEditorExtensions(filePath, true, true);
   const options = useMemo(
     () => ({
       original: originalContent,

apps/code/src/renderer/features/code-editor/hooks/useEditorExtensions.ts

@@ -39,7 +39,7 @@ export function useEditorExtensions(
       theme,
       mergeViewTheme,
       EditorView.editable.of(!readOnly),
-      ...(readOnly ? [EditorState.readOnly.of(true)] : []),
+      ...(readOnly && !isDiff ? [EditorState.readOnly.of(true)] : []),
       ...(languageExtension ? [languageExtension] : []),
     ];
   }, [filePath, isDarkMode, readOnly, isDiff, wordWrap]);