`CommandInput` sets `aria-expanded` to a boolean

• Where: command_input.rb, aria_expanded: true. Snapshot
  command/dialog line 18.
• Effect: same root cause as item 2; listed separately because the fix
  is a real state string ("false" at rest, toggled by the controller),
  not just "true".
• Fix: aria_expanded: "false" and have command_controller.js set it;
  re-record (on the 2.0 line) command/*.

Surfaced by the golden HTML suite (PR #536), which pins what 1.6 renders today — this defect included. Per maintainer decision (2026-09-19) main stays as is: this is addressed on the 2.0 line, and the golden snapshot that pins it is re-recorded there with the diff reviewed.

Source: design/v2/follow-up-issues.md.

Commencez dans command_input.rb au niveau de aria_expanded et examinez command_controller.js pour la mise à jour de l’état. Exécutez la golden HTML suite ou le command/* snapshot, puis réenregistrez-le sur la ligne 2.0 et examinez le diff. C’est terminé lorsque l’état au repos et l’état géré par le contrôleur utilisent les chaînes ARIA attendues sans modifier la ligne 1.6.