- Replace per-entry move/remove buttons with single dropdown button (⇄)
- Add context menu on right-click (check, move, remove)
- Move "remove" into dropdown/context menu as last item (red)
- Keep "?" check button inline for quick access
- Add CSS spinner animation on check result block during loading
- Show check result block immediately with domain name and spinner
- Align sidebar IPs with flexbox columns
- Reduce button padding for compact 3-column layout
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>