hygiene(tick-history): 2026-05-01T09:59Z — PR #1018 follow-up (intra-file drift)

docs/hygiene-history/ticks/2026/05/01/0959Z.md

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+| 2026-05-01T09:59:00Z | opus-4-7 / autonomous-loop tick | 98fc7424 | PR #1018 follow-up tick — re-audit revealed 2 NEW threads on PR #1018 (recurrent-finding pattern: reviewers re-evaluate after each force-push and find more). Both real **intra-file consistency fixes**: (1) header comment in `tools/backlog/generate-index.sh` line 24 still said "missing YAML frontmatter (need id + title)" but the actual emitted text at line 142 was updated to "missing required frontmatter field (need both id and title)" — header now matches; (2) H1 heading in B-0125 still said "Skip Analyze (csharp) ..." but the frontmatter `title:` was updated to "Skip F#/Analyze (csharp) ..." — H1 now matches. **New resolution-class observed: intra-file drift / Real-fix subclass** — when one place in a file gets updated (frontmatter title, emitted message), the corresponding sibling place in the same file (H1 heading, header comment) gets stale. The reviewer's catch-rate on this class is high because diff-views show both changes contextually. Future-Otto: **after editing one consistency-paired location in a file, immediately scan the rest of the file for siblings that need the same update**. The pair `frontmatter-title ↔ H1-heading` is structural; the pair `emitted-message ↔ header-comment` is documentary. Both need synchronized edits. Re-audit also revealed new threads on #1051 (2), #1043 (3), #1040 (2), #1031 (4), #1030 (4), #1025 (1) — all post-fix re-evaluations. The reviewer-keeps-finding-after-each-push pattern is documented in the hygiene-history shard at `docs/hygiene-history/ticks/2026/05/01/0046Z.md`: *"Findings keep coming because Copilot re-evaluates after every force-push and after every base-branch update. The queue isn't stuck; the threads are accumulating on a rolling basis."* This tick continues that observation. PR #1018 substrate; auto-merge unarmed. Cron 98fc7424 healthy. | [PR #1018: 1 commit (a0f5d8f) addressing 2 intra-file consistency findings + 2 thread-resolutions; auto-merge intentionally unarmed] | The intra-file drift class is structurally interesting because it's caused BY the previous fix — when the substrate-author updates one location, they create a transient drift between paired locations. The corrective is **paired-edit discipline**: identify the structural pair (frontmatter-title ↔ H1, emitted-message ↔ header-comment, schema-cell ↔ matching-prose, etc.) at edit time and update both atomically. The class composes with the BACKLOG.md/per-row-file pair (autogenerated index ↔ source rows) — same structural shape: change one, regen the other. The pattern is **structural-pair + synchronized-edit** at every level. Worth promoting to a memory file: "paired-edit discipline / sibling-location synchronization" alongside the other resolution classes accumulated in this drain wave. |