Render panels 10-14 showing the update check states: - panel-10-update-idle: menu with 3 captures, no update available - panel-11-update-checking: same as 10, but row reads "Checking..." - panel-12-update-uptodate: footer status shows "Redline X.Y.Z is up to date, checked 10:42 Dubai" - panel-13-update-staged: row "Update to 9.9.9" present, footer status "Update to 9.9.9 is ready" - panel-14-update-revert: row "Revert to 0.2.0" present All five panels driven by model state only; never touch real appcast or UserDefaults. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_012ZiTXPbPCSjzPVsfoweAbp