Write & POST May 30 standup to Slack (12:30-13:30 UTC window) — defaults fire today (#11190 close + Sergey SSO Option A)

Daily standup task per LEARNINGS 2026-05-30 04:10 UTC reflection and AGENTS.md End-of-Reflection Wiring Audit item (3). Posting window: 2026-05-30 12:30-13:30 UTC. DoD: Slack DM to Carson (channel D0B0980TR88) + memory/standups/2026-05-30.md. MANDATORY final-refresh step before send: re-read fleet-task resume, latest Slack DM/assistant-thread messages since 2026-05-29 12:27 UTC, latest PR truth for #11190/#11281/#10870/#11189/#11191/#11198 + older backlog (#9886/#9932/#9353/#10401/#10498/#10499/#10508/#10824), and execution state of default-action tasks e92169c1 (#11190 close) and 0d7441fb (Sergey SSO Option A). Patch memory/standups/2026-05-30.md so no stale claim survives. If either default executed/cancelled/failed, report the actual outcome. If Carson answered either decision prompt between 2026-05-29 12:27 UTC and 12:29 UTC May 30, reflect the answer, not the default. Send-side timing/status guard: do not send before metadata.trigger_after_utc or 12:30 UTC. If task is leased early, renew/checkpoint or leave queued rather than poison-pilling. After successful Slack send, immediately PATCH this task to completed with slack_ts, delivered_at, and memory_file before any other work. Topic for ping-lockout bookkeeping: standup-2026-05-30. CHECKLIST-CONTACT Gates 1-8 must run before send. Pre-staged body path: memory/standups/2026-05-30.md