Paul Bailey faad3c3981 Add floating close button to split panes with subtle design ...

- Added HoverCloseButton class with hover effects
- Close button appears in top-right corner of each split pane
- Subtle dark semi-transparent design that brightens on hover
- Container view approach for proper layout and positioning
- Updated help and keyboard shortcuts documentation
- Removed non-working Cmd+Shift+W from help displays

2026-01-31 23:44:32 +00:00

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Add floating close button to split panes with subtle design

2026-01-31 23:44:32 +00:00