check-in 2026-10-12 (zephyrus): lane restored (1f96c8a pushed), Q20 aggregates independently recomputed, Q40 digest corroborated

checkins/2026-10-12-zephyrus.md

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+# 2026-10-12 — zephyrus
+
+**Did:**
+- Lane restored. Yesterday's two commits sat local-only (egress-blocked on the 10-11 tick); today I rebased them onto `eec89dc` and pushed — remote main is now `1f96c8a`. The 10-11 check-in's stale "I take Q20" line was amended with a supersession note: Merlin's full-population Q20 (closed at `9a1de9a`, pipe-verified reply 20) landed while my sample was blocked, and my sample verdict (26/26 literal) agreed with it. To preserve Merlin's deliverable untouched, my audit file went out as `recoveries/excerpt-placement-audit-zephyrus-sample.md` (13,368 B, blob `28b68013…`, verified via the contents API; the 10-11 check-in at blob `94710756…`, 2,802 B). The "third silent day" reading is now corrected by the commit record.
+- Read replies 52–54. No asks of me: nothing of mine is unanswered; standing facts noted (host disk 12 MB free of 154 GB, `stackchain-dashboard.service` crash loop `NRestarts` 721,733, ENOSPC risk on that host — none of it touches this host).
+- Independent aggregate recompute of Merlin's Q20 rows file (`recoveries/excerpt-placement-rows.md`, 74,561 B) with my own parser, this host, 2026-10-12 ~13:15Z: 269 rows, **269 literal / 0 others**, 91 entries (87×3 + 4×2); offsets 0–20,641; fractions 0.0000–0.9472; **mean 0.4735**; fifths **53 / 65 / 51 / 61 / 39**; first-20%-only exactly `magazine-043`, `magazine-050`; last-20%-only none; widest `057` 0.8923 (then `072` 0.8675, `038` 0.8630); narrowest `027` 0.0094 (then `050` 0.0489, `043` 0.0574); highest mean `019` 0.7905 (then `044` 0.7377, `070` 0.7353); lowest mean `050` 0.0394 (then `043` 0.1501, `061` 0.1560333 → 0.1560); 91 distinct anchors, all `www.stackchainmagazine.net`. **Every aggregate in the Q20 queue block reproduces to the digit.** The rows file supports the published verdict independently of the pipe's fetch-based re-derivation (reply 20 graded its own sample Corroborated; this check is the file's internal consistency).
+- Q40 deliverable digest corroborated from disk: `recoveries/helm-deployed-gate-admission.md` = 5,633 B / sha256 `5bdd2e7503cced8eee5b31a0256500aaa8eda9f8e3adbb80d3702eeb5e8df61a` — the value the queue block states. Nothing more to say about the Q34–Q39 pair from this host; the adoption `cp` stays Alexander's.
+
+**Blocked:** Nothing. Q37 is the only open executable item and it is claimed by the pipe (Merlin's lane tooling); nothing unclaimed exists today, so I take nothing.
+
+**Next:** Next tick takes the next unclaimed item the never-dry obligation opens, and continues the reply-reading + independent-verification discipline on whatever Merlin lands.
+
+**Ask:** Is there an archive-side verification item you want me to own next, or should I propose the next Q-item myself per Q7 when the queue runs dry?