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Per docs/hygiene-history/ticks/README.md schema, the first column of each shard MUST be exactly an ISO-8601 UTC timestamp. 15 shards (April 28, 29, 30) carried a parenthetical context appended to the timestamp in col1 — pattern caught by Copilot on PRs #745-755 + #970. The parenthetical content is preserved by each shard's body column (col4) which already restates the tick context. The fix removes the col1 violation without losing information. Surface drift fix per the just-landed rediscoverable-from-main invariant on docs/AUTONOMOUS-LOOP.md (#969): tick-history is one of the four properties that makes the invariant true. If shards drift in format on main, future agents see two incompatible patterns and have to guess. Schema-uniform shards make the read surface predictable. Files affected (15): - docs/hygiene-history/ticks/2026/04/28/{0408,0418,0433,0501}Z.md - docs/hygiene-history/ticks/2026/04/29/{0235,0240,0320,0350,0400,0425,0430,0435,0440}Z.md - docs/hygiene-history/ticks/2026/04/30/{2018,2312}Z.md No data loss — only col1 prose drift removed; body context fully preserved. Trailing newline added on 3 files where it was missing. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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Pull request overview
Batch schema-cleanup for tick-history shard files to keep the shard “first column” strictly ISO-8601 UTC timestamps (per docs/hygiene-history/ticks/README.md), removing appended parenthetical context that caused schema drift across multiple existing shards.
Changes:
- Removed parenthetical tick-context text that had been appended after the timestamp in column 1 across 15 shard files.
- Normalized shard first-line formatting to keep the timestamp column parseable and schema-compliant (and restored trailing newlines where needed).
Reviewed changes
Copilot reviewed 15 out of 15 changed files in this pull request and generated no comments.
Show a summary per file
| File | Description |
|---|---|
| docs/hygiene-history/ticks/2026/04/28/0408Z.md | Removes col1 parenthetical so the first column is a strict ISO-8601 timestamp. |
| docs/hygiene-history/ticks/2026/04/28/0418Z.md | Removes col1 parenthetical so the first column is a strict ISO-8601 timestamp. |
| docs/hygiene-history/ticks/2026/04/28/0433Z.md | Removes col1 parenthetical so the first column is a strict ISO-8601 timestamp. |
| docs/hygiene-history/ticks/2026/04/28/0501Z.md | Removes col1 parenthetical so the first column is a strict ISO-8601 timestamp. |
| docs/hygiene-history/ticks/2026/04/29/0235Z.md | Removes col1 parenthetical so the first column is a strict ISO-8601 timestamp. |
| docs/hygiene-history/ticks/2026/04/29/0240Z.md | Removes col1 parenthetical so the first column is a strict ISO-8601 timestamp. |
| docs/hygiene-history/ticks/2026/04/29/0320Z.md | Removes col1 parenthetical so the first column is a strict ISO-8601 timestamp. |
| docs/hygiene-history/ticks/2026/04/29/0350Z.md | Removes col1 parenthetical so the first column is a strict ISO-8601 timestamp. |
| docs/hygiene-history/ticks/2026/04/29/0400Z.md | Removes col1 parenthetical so the first column is a strict ISO-8601 timestamp. |
| docs/hygiene-history/ticks/2026/04/29/0425Z.md | Removes col1 parenthetical so the first column is a strict ISO-8601 timestamp. |
| docs/hygiene-history/ticks/2026/04/29/0430Z.md | Removes col1 parenthetical so the first column is a strict ISO-8601 timestamp. |
| docs/hygiene-history/ticks/2026/04/29/0435Z.md | Removes col1 parenthetical so the first column is a strict ISO-8601 timestamp. |
| docs/hygiene-history/ticks/2026/04/29/0440Z.md | Removes col1 parenthetical so the first column is a strict ISO-8601 timestamp. |
| docs/hygiene-history/ticks/2026/04/30/2018Z.md | Removes col1 parenthetical so the first column is a strict ISO-8601 timestamp. |
| docs/hygiene-history/ticks/2026/04/30/2312Z.md | Removes col1 parenthetical so the first column is a strict ISO-8601 timestamp. |
Merged
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AceHack
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Apr 30, 2026
…g future tick-times — surface for maintainer decision before mass-fixing col1 (#973) Codex P2 review on PR #740 caught a pattern across 14+ open tick-history shard PRs from 2026-04-29: col1 tick-times are 40-80 minutes ahead of the commits' author-times. The shards weren't recording past ticks — they were prefabricating shard files for future tick slots. Empirical sample: | PR | PR opened | Claimed tick | Commit author | Gap | |---|---|---|---|---| | #728 | 02:05:49Z | 02:45:00Z | 02:05:42Z | +40m | | #730 | 02:07:17Z | 02:55:00Z | 02:07:14Z | +48m | | #734 | 02:14:15Z | 03:15:00Z | 02:14:12Z | +61m | | #740 | 02:24:24Z | 03:45:00Z | 02:24:20Z | +81m | The prior-tick col1 cleanup (PR #971) on 15 shards already on main and the per-PR force-pushes on #745-755 + #968 fixed the schema-violating parenthetical, but the underlying prefabrication concern was buried under the more visible Copilot-P1 col1 finding. Two interpretations: 1. Mis-timestamped recording — agent computed col1 wrong 2. Intentional batch prefabrication of future-tick receipts Either way, mechanically fixing col1 on the remaining 14 PRs would launder the prefabrication: shards would look schema- compliant but still claim factually-incorrect tick times. Composes with the rediscoverable-from-main invariant landed in PR #969: tick-history-on-main is one of four supporting properties; false time-claims subvert the invariant. Decision options for the maintainer (in the file): - Close affected PRs (audit-trail integrity over evidence- density) - Rewrite col1 to commit-time - Add a note column for time-of-record vs time-of-event - Accept prefab pattern as intentional Filing this as substrate (per substrate-or-it-didn't-happen) and explicitly NOT mass-fixing col1 on those PRs until direction. MEMORY.md index entry added; latest-paired-edit marker updated. Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>
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Summary
Batch-fixes the col1 parenthetical schema violation that Copilot caught on the 6 stale PRs (#745, #746, #747, #753, #754, #755) and on PR #970 — the same pattern existed across 15 shards on
maindating back to April 28.Per
docs/hygiene-history/ticks/README.mdschema:The first column must be exactly the ISO-8601 UTC timestamp. The parenthetical context (e.g. "(autonomous-loop tick — peer-call substrate cluster)") was being appended after the timestamp in col1 across many shards.
Why this matters
Per the just-landed rediscoverable-from-
maininvariant ondocs/AUTONOMOUS-LOOP.md(#969), tick-history is one of the four properties that makes the invariant true. Schema drift onmainmeans future agents see two incompatible patterns and have to guess. Schema-uniform shards make the read surface predictable.Files affected (15)
docs/hygiene-history/ticks/2026/04/28/{0408,0418,0433,0501}Z.mddocs/hygiene-history/ticks/2026/04/29/{0235,0240,0320,0350,0400,0425,0430,0435,0440}Z.mddocs/hygiene-history/ticks/2026/04/30/{2018,2312}Z.mdHow fixed
For each shard, the
(...)parenthetical between the timestamp and the next|column boundary was removed. Body content (col4) already restated the tick context, so no information lost. Trailing newline added to 3 files where the python regex pass had stripped it.Test plan
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