shard(tick): 1301Z-01 — drift recalibration per Codex P2#3467
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…3465 Filename = `date -u +%H%MZ` at write-time going forward; prior shards had drifted ~4-8min ahead of actual commit-time. Disambig suffix used because 1301Z.md already exists on main. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Pull request overview
This PR adds a tick-history shard documenting the chronology drift recalibration after the Codex P2 catch on PR #3465.
Changes:
- Adds a new
1301Z-01hygiene-history tick shard. - Documents the filename discipline change to use actual UTC at write time.
- Records current PR/cron sentinel state for the autonomous loop.
…2 Copilot) Schema validator (tools/hygiene/check-tick-history-shard-schema.ts:117-125) compares col1 HH:MM to filename HH:MM; original 13:02:00Z would fail against 1301Z filename. Also reframed the "filenames preserved" rationale to honestly note the legacy-table generator sorts by parsed prefix — so the drifted prefixes ARE load-bearing for projection ordering, fix-up deferred to a follow-up rename pass. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This was referenced May 15, 2026
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Cron-driven autonomous-loop tick. Codex caught real chronology drift on PR #3465; this shard establishes the discipline fix and uses actual UTC at write-time.