add Vim mode service, mode commands, and status indicator

T-207, first foundation piece of the Vim layer (T-65 epic). A
VimModeService (ChangeNotifier) owns the normal/insert/visual mode and
mirrors it into the keymap as mutually-exclusive vim.normal/vim.insert/
vim.visual scope flags. Those flags are the public mode interface: the
editor (T-206) will read them to decide insert-vs-command, and vim.yaml
(T-65) guards bindings with `when: vim.*`. Nothing reaches across the
builtin boundary into the service object.

The layer is gated on the active preset — the builtin.vim extension
ties VimModeService.enabled to app.keymap.preset and re-checks on every
keymap reload, so i/v/Esc never hijack input under non-Vim presets. Mode
commands (vim.mode.{normal,insert,visual}) carry no default binding for
the same reason; only vim.yaml binds keys to them. A status-bar item
shows `-- NORMAL --` etc. while enabled.

Exposes KeymapService on the extension context so the layer can publish
scope flags.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

This commit is contained in:

jpmschweitzer

2026-06-01 20:59:01 +02:00

co-authored by

Claude Opus 4.8

parent 4aa24a9898

commit 61b969d010

12 changed files with 448 additions and 0 deletions

									
										lib/kernel/src/extensions_manager.dart
									
		+2
		
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				@@ -290,6 +290,8 @@ class _ExtensionContext implements ClideExtensionContext {

				  @override

				  CommandRegistry get commands => manager.commands;

				  @override

				  KeymapService get keymap => manager.keymap;

				  @override

				  PaletteController get palette => manager.palette;

				  @override

				  ReaderNavRegistry get readerNav => manager.readerNav;