Write & POST July 6 standup to Slack (12:30-13:30 UTC window) — queue-for-N+2, template-enforces-N+2, substrate_leak_scrub

Cold-start N+2 inflation from 2026-07-04 04:10 UTC self-reflection cron. Belt-and-suspenders while runtime N+2 layer is at empirical N=1 (July 4 queued from July 2 lease). At lease: (0) eval $(~/bin/gh-fleet-token.sh) then verify GH_TOKEN length==40; (1) check active_tasks for standups; if July 8 not present, POST it before composing body (template_enforces_n_plus_2=true); (2) apply substrate_leak_scrub to composed body: drop or re-home any line matching /Cross-context|substrate|binding denied|retry_count|heartbeat recovery|poison[- ]?pill|lease[- ]?expired|webchat.?slack/i; (3) dedupe against last 25 Carson DMs; (4) send-window guard 12:30-13:30 UTC; (5) atomic completion with slack_ts + memory_file + delivered_at + fleet/kai counts + substrate_retry_count captured to result. Substrate-leak-scrub guard applied 2026-07-04: before sending to Slack, apply substrate_leak_scrub; drop/re-home any composed user-facing line matching /Cross-context|substrate|binding denied|retry_count|heartbeat recovery|poison[- ]?pill|lease[- ]?expired|webchat.?slack/i; fire substrate.novel_failure_mode task events for novel mechanism failures instead of narrating substrate plumbing in the standup body.