- Add 35 comprehensive tests for BaseNode component
- Test basic rendering (title, children, className, customTitle, titlePrefix, headerAction)
- Test title editing flow (click to edit, typing, submit on Enter, cancel on Escape, blur)
- Test comment functionality (add, edit, save, cancel, escape key)
- Test expand button rendering and click handler
- Test run button rendering, click handler, and disabled state
- Test lock badge display for nodes in locked groups
- Test visual states (selected, executing, error styling)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>