fix(keybindings): migrate to namespaced ids closes #2391

packages/coding-agent/docs/extensions.md

@@ -1670,6 +1670,8 @@ Use namespaced keybinding ids:
 - Coding-agent ids use the `app.*` namespace, for example `app.tools.expand`, `app.editor.external`, `app.session.rename`
 - Shared TUI ids use the `tui.*` namespace, for example `tui.select.confirm`, `tui.select.cancel`, `tui.input.tab`
 
+For the exhaustive list of keybinding ids and defaults, see [keybindings.md](keybindings.md). `keybindings.json` uses those same namespaced ids.
+
 Custom editors and `ctx.ui.custom()` components receive `keybindings: KeybindingsManager` as an injected argument. They should use that injected manager directly instead of calling `getKeybindings()` or `setKeybindings()`.
 
 #### Best Practices