# Closed Backlog Audit Coverage Delta V01

Issue: [#306](https://github.com/pinklon/ai-capability-discipline/issues/306)
Baseline audit issue: [#304](https://github.com/pinklon/ai-capability-discipline/issues/304)
Baseline PR: [#305](https://github.com/pinklon/ai-capability-discipline/pull/305)
Baseline merge commit: `15c4c5c22d2e7d8c1ae4d0b28339e4ffcc0893de`
Date: 2026-06-27

## Purpose

This attestation preserves the closed-backlog audit baseline created by #304 and defines how future backlog-governance work checks only the delta since that baseline unless a mechanical check fails.

It is a repo-governance artifact. It does not reopen issues, close issues, create follow-up implementation tickets, relabel issues or PRs, mutate source registries, change runtime behavior, change package authority, or approve production work.

## Baseline Audit Record

| Field | Value |
|---|---|
| Baseline audit issue | #304 |
| Baseline PR | #305 |
| Baseline merge commit | `15c4c5c22d2e7d8c1ae4d0b28339e4ffcc0893de` |
| Baseline audited closed issue count | 118 |
| Baseline audited merged PR count | 130 |
| Highest closed issue represented in #304 matrix | #302 |
| Current closed issue count at this delta check | 119 |
| Highest current closed issue at this delta check | #304 |
| Current closed issue missing from #304 matrix | yes, #304 |
| Full re-audit required | no |

## Coverage Finding

#304 covered the full historical closed backlog available at the audit baseline through issue #302. The #304 matrix contains exactly 118 closed issue rows, and the highest represented closed issue is #302.

The only current closed issue missing from the #304 matrix is #304 itself. That is an expected post-audit closure because #304 was the audit issue and closed after the matrix baseline was established.

## Post-Audit Closed Issue Delta

| Issue | Title | Delta classification | Required action | Rationale |
|---|---|---|---|---|
| #304 | Audit full closed backlog implementation reality and mechanical closure governance v01 | expected post-audit closure | no action needed | #304 is the baseline audit issue and closed after the audited matrix high-water mark of #302. Its audit artifacts are validated separately by repo-local checks. |

Allowed required-action values for future delta rows:

- expected post-audit closure
- audit omission
- owner-review required
- follow-up implementation ticket required
- no action needed

## Full Re-Audit Decision

Full re-audit required: no.

Rationale: the baseline artifact exists, the #304 audit matrix count is consistent at 118 rows, closed issue numbers are parseable, the #304 matrix high-water mark is #302, and the current closed issue export shows only #304 as an expected post-audit closure above the baseline.

A full re-audit is required only if the baseline artifact is missing, the matrix count is inconsistent, closed issue numbers are unparseable, or current closed issue exports reveal unclassified historical omissions.

## Future Backlog Audit Rule

After any full closed-backlog audit is merged, the repo must preserve the audited baseline and require future backlog-governance work to check only the delta since that baseline unless the delta check fails. A full re-audit is required only if the baseline artifact is missing, the matrix count is inconsistent, closed issue numbers are unparseable, or current closed issue exports reveal unclassified historical omissions.

Future closed issues should be checked against the last audited baseline by:

1. Reading the latest closed-backlog audit baseline artifact.
2. Parsing the audited matrix high-water mark and row count.
3. Exporting or otherwise reviewing current closed issues.
4. Classifying only closed issues above the high-water mark or missing from the baseline matrix.
5. Recording each delta row with a required action from the allowed action values.
6. Escalating to a full re-audit only when the delta check cannot prove coverage.

## Recurrence-Prevention Control

What manual failure or repeated task did this work discover?

- #304 required a full manual closed-backlog audit because the repo had closure-reality rules but no durable baseline artifact that made later deltas mechanically visible.

What repo-local rule, validator, template field, receipt requirement, or artifact now prevents recurrence?

- This attestation preserves the audited baseline, high-water mark, post-audit delta row, full re-audit decision, and future delta rule.
- `validation/scripts/check_backlog_closure_governance.py` validates the baseline and recurrence-prevention contract.
- The issue and PR templates require a recurrence-prevention control field so future governance work records the smallest rule, validator, template field, receipt requirement, or artifact that prevents repeated manual rediscovery.
- The validation receipt for this work records which future manual work is reduced.

If no mechanical control was added, why not?

- Not applicable. This work adds a mechanically checked attestation, JSON companion, validator coverage, and template fields.

## Boundaries

- No Production apply was started.
- No #271 extraction-profile work was started.
- No OKF implementation was started.
- No Google SDLC implementation was started.
- No multi-agent orchestration implementation was started.
- No #304 recommended follow-up implementation tickets were created.
- No issues were reopened.
- No open issues were closed.
- No existing issues or PRs were relabeled.
- No source registry mutation occurred.
- No Cloudflare CLI or API reads or writes occurred.
- No runtime behavior changed.
- No package authority changed.
- `codex-automerge` was not applied.