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48 changes: 48 additions & 0 deletions docs/hygiene-history/ticks/2026/05/15/0959Z.md
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| 2026-05-15T09:59:00Z | claude-opus-4-7 | 596e842c | shard: PR #3402 templated stale-(PR TBD) reply+resolve; first application of N+1 in-flight-count discipline | (PR #3404) | maintenance tick β€” no merges this cycle; in-flight = 2 enumerated + this tick's PR = 3 |
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# Tick 0959Z β€” PR #3402 templated stale-(PR TBD) reply; new N+1 count discipline applied

## Headline

- **PR [#3402](https://github.com/Lucent-Financial-Group/Zeta/pull/3402)** (0950Z shard) picked up 1 stale-Copilot thread on `(PR TBD)` β€” col 5 verified `(PR #3402)` on the PR branch. Templated reply + resolve (Nth occurrence of the established pattern).
- **No PR merges this tick** β€” CI in flight on both #3402 + #3403.
- Cron sentinel `596e842c` armed.

## Ξ” since 0955Z

| What | At 0955Z | At 0959Z |
|---|---|---|
| PR #3402 (0950Z shard) | OPEN, wait-ci | OPEN, 1 stale-Copilot β†’ templated reply+resolved |
| PR #3403 (0955Z shard) | OPEN, wait-ci | OPEN, wait-ci (unchanged) |
| In-flight PRs | 2 (#3402, #3403) + this tick = 3 | 2 (#3402, #3403) + this tick's PR = 3 |
| Cumulative merges | 25 | 25 |
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## Substrate-honest observations

### First application of N+1 in-flight count discipline

Per 0955Z's lesson, in-flight PR counts now phrase as "N enumerated + this tick's PR". Applied this tick: "2 (#3402, #3403) + this tick's PR = 3".

Why this works:

- N enumerated PRs ARE in flight at write-time (objectively countable)
- This tick's PR is in flight at write-time (about to be opened in 30s)
- N+1 is the actual count without needing to predict the PR number

Avoids the off-by-one error class that surfaced in 0940Z + 0947Z shards (both said "N" but should have said "N+1").

### Templated reply efficiency

The Nth stale-`(PR TBD)` reply this session took ~2 tool calls (verify + mutation pair). Total session stale-reply count: ~7 occurrences. The mechanization ROI calculation from the 0838Z shard's analysis remains accurate β€” manual reply-and-resolve cheaper than building Option A or B mechanization for this frequency.

## Cron sentinel

`596e842c` armed.

## Next

Cron-driven. Next tick:

1. Verify PR #3402 + #3403 + this tick's PR auto-merge fires
2. Address any new threads
3. Session is approaching natural close-out β€” substrate stable, no urgent backlog
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