feat: expand keybinding system with vim motions, media keys, and inspector improvements (#3161)

Addresses the keybinding audit (#3157):

- Add missing vim-normal bindings: 0, $, w, b, e, x, dd, D, C
- Add new CursorWordEnd action for vim 'e' motion
- Add VimChangeToEnd action for vim 'C' motion
- Add Media key support (play, pause, stop, volume, etc.)
- Refactor inspector keymap to be minimal but respect enter_accept
  and provide vim-style j/k navigation for vim users
- Add $ to special character parsing
- Replace eprintln! with tracing::warn! for config errors
- Document shifted punctuation keys and media keys

To be rebased once #3158 is merged

0 files changed, 0 insertions, 0 deletions