Write & POST June 10 standup to Slack (12:30-13:30 UTC window) — post-resource-ask-close-execution reflection

Post the June 10 standup to Carson Slack DM (target D0B0980TR88) in the 12:30-13:30 UTC window. This standup posts AFTER the 12:00 UTC resource-ask close-with-summary execution window, so the body must reflect: (a) if Carson replied to the resource-ask escalation default → close was aborted, acknowledge the reply + the cancellation, OR (b) if no reply → close executed, list which 8 PRs were closed-with-summary + the Linear ticket IDs for each. Mandatory step (0): eval "$(~/bin/gh-fleet-token.sh)" as an isolated standalone-line shell statement, then verify ${#GH_TOKEN}==40 on the next line. Mandatory final-refresh step: live gh pr view on all owned PRs (#11428/#11429/#11440/#11517/#11569/#11695/#11789 + agent-infra #319 + any still-open older PRs); read last 25 Carson DMs; check the resource-ask close sub-agent task result. Send-side timing/status guard: do NOT post before 2026-06-10T12:30:00Z. Post-push duplicate-suppression gate. Atomic completion: PATCH this task to completed with metadata.slack_ts + memory_file + delivered_at. Body should be compressed on routine state (per AI#11 from June 9 reflection): single-line summary for unchanged PRs.