uroma fc76581337 Fix session close button with non-blocking confirmation modal ...

Replace blocking confirm() dialog with custom non-blocking modal to prevent
browser warning issues when users have "don't show warnings" enabled.

Changes:
- Add showConfirmModal() method with Promise-based async modal
- Update closeSession() to use non-blocking modal
- Update deleteSession() to use non-blocking modal
- Add complete CSS styling for confirmation modal
- Support keyboard (Escape key) and click-outside to close
- Responsive design for mobile devices
- Dark theme matching existing UI

Fixes issue where close button completely stopped working after browser
blocked confirm() dialog and user selected "don't show warnings".

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

2026-01-22 12:35:52 +00:00

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