hygiene(#268+): pr-preservation drain-log for #426 (tick-history meta)#464
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hygiene(#268+): pr-preservation drain-log for #426 (tick-history meta)#464
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…-record) Otto-268 follow-on: drain-log for the **meta-record** PR #426 (tick-history append summarizing the 28-thread sustained-drain-wave on 2026-04-25T04:15:00Z). The wave-summary itself attracted 3 post-merge findings on text accuracy. Per Otto-250 training-signal discipline. Pattern observations: 1. Tick-history meta-records get drained too — drain corpus is recursive. Every PR that lands gets reviewer-cascade attention regardless of substantive vs meta content. 2. Otto-229 append-only correction-row pattern applied uniformly: original row stays untouched; correction rows point back at the original timestamp. 3. Pipe-in-Markdown-table-row is a recurring formatting class — inline code spans containing `|` get parsed as column separators. Earlier `||` issues + MD056 hits; #426 has it with `|` in a `read -rs | printf` command. Pre-commit-lint candidate. 4. Count-vs-list cardinality observed at 5 PRs now (#191, #219, #430, #85, #426). Pattern is mature enough that automation would pay back across the entire drain corpus.
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Pull request overview
Adds a new PR-preservation drain log for PR #426, capturing the post-merge review threads on the tick-history “sustained drain wave” meta-record and documenting outcomes/pattern observations per the Otto-250 preservation discipline.
Changes:
- Introduces
docs/pr-preservation/426-drain-log.mddescribing 3 post-merge findings (2 count/consistency corrections + 1 Markdown table pipe rendering fix). - Records outcomes (append-only correction rows vs in-place formatting fix) and summarizes recurring patterns (count-vs-list drift, pipe-in-table rendering issues).
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AceHack
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Apr 25, 2026
…iated shape divergence (#467) * hygiene(_patterns.md): document Otto-250-canonical vs Otto-268-abbreviated drain-log shape divergence Multiple post-merge reviewer threads on the Otto-268-wave drain-logs (#437-#465) flagged that the abbreviated inline shape doesn't match the canonical Otto-250 multi-section format used in older drain-logs (#108, #247, etc.). The findings are correct: the shapes ARE different, and the abbreviated shape compresses verbatim reviewer/reply text into short prose. Documenting both shapes here in `_patterns.md` as a known divergence + three maintainer-decision options: (a) Rewrite — high churn, highest faithfulness. (b) Accept divergence — document both as valid. (c) Hybrid — canonical for substantive logs (math / crypto / algorithms / ADRs); abbreviated for low-substance. Until maintainer decides, drain-runners writing future logs default to canonical; existing Otto-268-wave logs stay abbreviated with this known-divergence pointer. This is the right place for the documentation per the synthesis- over-history surface-class declaration: `_patterns.md` reflects current corpus state including known shape divergences, separate from the per-log records. Composes with the per-PR drain-log threads currently flagging the shape-conformance gap on #437/#441/#442/#444/#445/#446/#447/#449/ #460/#461/#464/#466 — those threads can now reply with a one-line pointer to this section instead of repeating the maintainer- decision-pending framing. * hygiene(#467): fix 4 Copilot findings on shape-divergence section Four Copilot catches converging on the same root cause: the shape-divergence section was citing drain-log PR-numbers (#437-#465) when readers will look for #437-drain-log.md etc. and not find them — drain-log FILE numbers reference the PRESERVED PR (e.g., #421/#422/#423), not the drain-log PR itself. The current file corpus ends at #434. Fixes: - :374 + :394 — drop the misleading "#437-#465" PR-range citation; cite the actual in-repo abbreviated-shape examples (#421/#422/#423) by file path; drop the unsupported "22+" numeric estimate in favour of "the 2026-04-25 backfill wave". - :380 — abbreviated template snippet now matches what the in-repo abbreviated logs actually use: `Finding:` bullet included, `Thread ID:` and `:LINE` placeholders dropped (those are canonical-shape fields, not abbreviated-shape). Reader can now copy/paste the template accurately. - :388 — soften the "Substance is preserved" overstatement to the objective claim: key metadata (reviewer/severity/outcome/ commit) is preserved; verbatim original-comment + verbatim reply text are NOT preserved; multi-section structure + file:line locator + Thread ID are also typically omitted. The fixes are themselves Class A (count-vs-list cardinality on "#437-#465" range) + truth-drift on a freshly-landed doc — appropriate self-application of the discipline this section documents.
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AceHack
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Apr 25, 2026
Append-only row per Otto-229 discipline: drained 17 unresolved threads across 8 of my own drain-log PRs (initial 13 + 4 cascade findings on this drain wave's fixes). Documents the 'drain-log self-correction at scale' pattern — Codex/Copilot reviews caught Class A/B pattern instances inside the same doc-lint BACKLOG row that promotes them to lint candidates (appropriate self-application). PRs drained: #449 / #442 / #441 / #464 / #456 / #465 / #467 / #444. Auto-merge SQUASH armed across the queue. Cron f38fa487 minutely fire verified live throughout the tick.
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Summary
Otto-268 follow-on: drain-log for meta-record PR #426 (tick-history append summarizing the 28-thread sustained-drain-wave on 2026-04-25T04:15:00Z). The wave-summary itself attracted 3 post-merge findings on its text accuracy.
Per Otto-250 (PR review comments + responses + resolutions are high-quality training signals).
Coverage
read -rs | printfpipe-in-code-span (Copilot P1, markdown rendering): unescaped|inside Markdown table row gets parsed as column separator. In-place pipe-escape fix.Pattern observations
||(double-pipe) issues + MD056 hits; hygiene(tick-history): drain wave 2026-04-25T04:15:00Z (28 threads / 6 PRs) #426 has|inread -rs | printf. Pre-commit-lint candidate.Test plan
docs/pr-preservation/*-drain-log.mdtemplate.🤖 Generated with Claude Code