Keyboard navigation support (vim-style keybindings)

[RAprogramm]

Summary

Add keyboard navigation support for hydebar to enable mouse-free workflow with vim-style keybindings.

Motivation

Currently hydebar requires mouse interaction for all operations. Users familiar with vim/neovim workflows prefer keyboard-driven interfaces for efficiency and accessibility.

Proposed Features

Global Navigation

• Open/close menus without mouse
• Navigate between modules
• Focus management

Menu Navigation

• Arrow keys or hjkl for movement
• Enter to select
• Escape to close
• Tab/Shift+Tab for cycling

Module-Specific Actions

• Calendar: navigate months, select dates
• Settings: toggle options, adjust values
• Notifications: dismiss, clear
• Media Player: play/pause, skip tracks
• Volume: adjust levels

Configuration

Keybindings should be configurable in config.toml:

[keybindings]
enabled = true
mode = "vim"  # or "emacs", "custom"

[keybindings.global]
toggle_menu = "<Super>space"
next_module = "<Super>l"
prev_module = "<Super>h"

[keybindings.menu]
up = "k"
down = "j"
left = "h"
right = "l"
select = "<Enter>"
close = "<Escape>"

Implementation Considerations

• Use iced keyboard event handling
• Maintain focus state across menus
• Ensure accessibility compliance
• Preserve existing mouse functionality
• Add visual focus indicators

Success Criteria

• All menus navigable via keyboard
• No mouse required for basic operations
• Configurable keybindings
• Visual feedback for focused elements
• Documentation for keybinding configuration