Write & POST June 8 standup to Slack (12:30-13:30 UTC window) — own June 7 miss + resource-ask hold-through closing default + substrate-bugs FYI

Post the June 8 standup to Carson Slack DM (target D0B0980TR88) in the 12:30-13:30 UTC window. Body pre-staged at memory/standups/2026-06-08.md. 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 — no compound `&&` lines, no piping into the eval. Mandatory final-refresh step: run `gh pr view 11789 --json state,reviewDecision,mergeStateStatus,mergedAt,statusCheckRollup` + `gh pr view 11695 --json state,mergedAt` + similar for #11428/#11429/#11440/#11517/#11569 + agent-infra #319 + the older 8 (#9886/#9932/#9353/#10401/#10498/#10499/#10508/#10824) and re-verify the resource-ask thread (C079JB43ENA ts 1780289017.407609) for any new replies; update the pre-staged body in place if any state changed (especially: any reply on the resource-ask thread cancels the escalation default and reframes the standup as a routine update). Send-side timing/status guard: do NOT post before 2026-06-08T12:30:00Z; if leased earlier, renew/checkpoint until trigger window. Post-push duplicate-suppression gate: read last 25 Carson DMs to confirm no duplicate same-topic ping in last 24h (the June 5 23:40 UTC DeepSource ping remains same-topic; this standup is routine + escalation, not a duplicate). Atomic completion: PATCH this task to completed with metadata.slack_ts, memory_file, delivered_at immediately after Slack delivery. CRITICAL: the body includes (a) honest acknowledgment that the June 7 standup did not post, (b) the resource-ask hold-through closing default with the 2026-06-10 12:00 UTC execution time and the explicit decision prompt, (c) one-line substrate-bugs FYI mentioning the Linear ticket is being filed, (d) routine PR-state report. Do not soften the escalation default — the single-shot commitment requires closing it cleanly when the hold-through deadline expires.