1. Fixed infinite loop when closing last tab:
- Return False instead of True when page already removed (prevents double-processing)
- Remove from tracking BEFORE calling close_page_finish to prevent re-trigger
- Properly schedule new tab creation only once
2. Fixed modified flag not clearing after save:
- Update widget.original_request in _mark_tab_as_saved
- Update widget.modified = False
- Manually call _on_tab_modified_changed to clear indicator
- Update tab page title when saving
3. Fixed header bar height and left spacing:
- Added CSS to reduce headerbar min-height to 38px
- Set headerbar padding-left to 0px to eliminate left gap
- Made tabs more compact (min-height: 26px, reduced padding)
- Reduced tabbar padding and margins
All critical issues from testing resolved!
Pavel Baksy
9c17f452bf