v2026.8.27.0

What's Changed

• fix(agent-harness): ECS health-check grace period for singleton deploys by @404Wolf in #5973
• style(channels): channel threading redesign by @sedson in #5952
• Allow videos inside table cells by @404Wolf in #5951
• chg(ui): refactor button variants and unify badge/pill styling by @sedson in #5938
• feat(observability): trace agent session stalls by @404Wolf in #5982
• fix(agent-session): answer 409, not 500, when a runtime is not attached by @404Wolf in #5984
• fix(web): disable onboarding in just run_local unless --enable-onboarding by @404Wolf in #5876
• style(channels): better derived thread rail color token, merge new and daily divider by @sedson in #5987
• feat(calendar): distinguish creator from target calendar by @synoet in #5974
• fix(email): stop oversized provider values wedging backfill jobs by @gbirman in #5886
• fix(email): keep HTML mail readable without shrinking it to dust by @cameronapak in #5890
• fix(calendar): decline reminders from owner inboxes by @synoet in #5967
• fix(style): add xl button for onboarding by @sedson in #5997
• fix(calendar): store Google eventType and stop defaulting reminders on status events by @gbirman in #5999
• fix(inbox): filter default to 'all' instead of 'unread' by @peterchinman in #5998
• feat: better offline support by @peterchinman in #5971
• feat(inbox): stable unread inbox by @peterchinman in #6001
• fix(md): restyle link preview and actions menu, fix click by @sedson in #6002
• Stop Cursor turns by draining the stream, not by settling locally by @404Wolf in #5986
• feat(email): turn on email notifications (internal only) by @synoet in #5985
• style(btn): tweak/fix icon sizes by @sedson in #6007

Full Changelog: v2026.8.26.0...v2026.8.27.0