Christoffer Martinsson 1b46aa2f13 Fix keybinding handling in main event loop
The new keybindings (Shift+Tab, Up, Down, BackTab) weren't working because
the main app.rs event loop was only passing specific keys to the TUI app.
Added handling for:
- KeyCode::BackTab (Shift+Tab panel switching)
- KeyCode::Up (scroll up in focused panel)
- KeyCode::Down (scroll down in focused panel)

Now all keyboard navigation features work correctly.
2025-10-23 20:41:48 +02:00
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