Replace marked.js with markdown-it for the control UI chat markdown renderer
to eliminate a ReDoS vulnerability that could freeze the browser tab.
- Configure markdown-it with custom renderers matching marked.js output
- Add GFM www-autolink with trailing punctuation stripping per spec
- Escape raw HTML via html_block/html_inline overrides
- Flatten remote images to alt text, preserve base64 data URI images
- Add task list support via markdown-it-task-lists plugin
- Trim trailing CJK characters from auto-linked URLs (RFC 3986)
- Keep marked dependency for agents-panels-status-files.ts usage
Co-authored-by: zhangfan49 <zhangfan49@baidu.com>
Co-authored-by: Nova <nova@openknot.ai>
