## Changes Made:
1. **[frontend/src/keyboard/registry.ts](file:///private/var/folders/m1/9q_ct1913z10v6wbnv54j25r0000gn/T/vibe-kanban/worktrees/155e-remove-keyboard/frontend/src/keyboard/registry.ts)**
- Removed arrow keys from navigation bindings, kept only hjkl
- Fixed Enter key conflict by changing fullscreen toggle to ⌘/Ctrl+Enter
2. **[docs/configuration-customisation/keyboard-shortcuts.mdx](file:///private/var/folders/m1/9q_ct1913z10v6wbnv54j25r0000gn/T/vibe-kanban/worktrees/155e-remove-keyboard/docs/configuration-customisation/keyboard-shortcuts.mdx)**
- Updated Board Navigation section to show hjkl only
- Added fullscreen toggle documentation
All type checks pass ✓