Image previews in the Diff tab
새 기능
1 건 변경- Added image preview support in Diff tab (shows original/modified images instead of base64 code).
개선
3 건 변경- Improved diff view visuals and aligned styling across widgets.
- Optimized Git polling and background diff/syntax pre-warming for faster Diff tab opening.
- Optimized reloading unaffected diffs.