gui: keep the Changes panel from re-reading git on agent events

Model refreshes re-show the active workspace on every agent event; the panel now only follows a workspace switch and reads on open or Refresh.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
49c8168a52Lucenx9 committed on 10/10/2026, 2:36:12 PMparentcafeb95
3 files changedLine totals unavailable