Wire 4 orphaned dialogs: chattr (C-x e), filter (Alt-f), encoding (Alt-e), connection (Alt-n)
4 dialog modules existed with full implementations and tests but were
completely unreachable — no Cmd variants, no DialogState variants, no
dispatch arms, no keymap bindings. This commit wires them in:
- ChattrDialog: C-x e — file attribute viewer for cursor file
- FilterDialog: Alt-f — persistent panel glob filter
- EncodingDialog: Alt-e — display encoding selector
- ConnectionDialog: Alt-n — network connection (FTP/SFTP/Shell)
All 4 now have: Cmd variants, DialogState variants, dispatch arms,
handle_dialog_key arms, render routing, apply_finished_dialog no-ops.
1022 tests pass, 0 new warnings.
vasilito
477b7efc33