# β Close-Out — Cycle #253 (PR #258)

## Cycle summary

| | |
|---|---|
| Issue | #253 — ContentClasses divergence (8 vs 5) |
| PR | #258 — squash-merged to main as `aacb817` |
| Ships in | 3.56.1 (release commit `7cda5b2`; tag `3.56.1` pushed and verified; release workflow fired 09:34:42Z; all 14 assets published by 09:44:09Z) |
| Review rounds | 2 (Round 1 APPROVED with 1 B-finding → Round 2 narrowing — at target of ≤2) |
| Findings total | 1 (F1: B, mechanical) |
| Mechanical ratio | 1 of 1 = 100% (below 10-finding threshold → noise, not a filable trigger) |
| Diff shape | L6 (cross-surface convergence: single source of truth for content classes; all shipped surfaces agree end-to-end) |
| Cycle process level | **L5** (L6 cap — intra-doc coherence drift `§1.1` ↔ `§1.2` reached review; β concurs with α's scoring) |

## Findings

### Finding A — review skill §2.2.8 worked exactly as written

F1 (the §1.1 ↔ §1.2 sibling-enumeration gap in `PACKAGE-SYSTEM.md`) was caught on Round 1 by applying review skill **§2.2.8 Authority-surface conflict**: "when multiple surfaces claim to define the same thing, verify they agree." §1.1 (content-class table with copy-mode column) and §1.2 (inline enumeration of directory-tree copy users) were two surfaces defining the same fact (which classes use directory-tree copy mode). α's diff touched §1.1 but not §1.2 — the sibling went stale.

The step *as written* is sufficient for this pattern. No patch needed to review/SKILL.md §2.2.8.

Triage: **drop** — the skill worked. Recording this as a positive example, not a finding against the skill.

### Finding B — CDD §5.3 row 7a schema/shape audit scope does not cover peer-enumeration pairs

α's pre-review row 7a audit ran and reported clean: new canonical form (`katas` row in §1.1) present, superseded forms (`pkgbuild.ContentClasses`, `FullPackageManifest.ContentClasses()`, `SkillsJSON`) removed, grep sweep across `src/go` clean. But F1 still landed in review because §1.2's prose enumeration of directory-tree-copy users restates §1.1's copy-mode column — and row 7a's scope, as written, does not explicitly cover *peer-enumeration pairs* within the same doc (a table column in one section restated as a prose enumeration in a sibling section).

**α has proposed a precise MCA in their close-out** (`.cdd/releases/3.56.1/alpha/253.md`):

> *Row 7a addendum:* When the change updates a table column, the audit must include every subsection within the same document that enumerates the same column in prose. Mechanical form: `grep -n "<column-value-1>.*<column-value-2>" <file>` for each value-pair present in the table, to surface prose enumerations that drift from the table.

**β disposition: concur, defer ship to γ.** The addendum:
- Is narrow (one-line edit to `src/packages/cnos.cdd/skills/cdd/CDD.md` §5.3 row 7a)
- Has a concrete mechanical form (grep per column value-pair)
- Directly addresses F1's failure class
- Does not introduce authoring-side noise for unrelated change shapes (it only activates when a table column is edited)

Per CDD §1.4 γ algorithm step 7 ("MCA available → ship it now as immediate output"), the ship decision belongs to γ. β concurs with the proposal and recommends ship.

Triage: **MCA, pending γ ship decision.** If γ ships this cycle, §9.1 closure is satisfied with an immediate output. If γ defers, the candidate is carried forward and recorded in the assessment's "Next Move > Closure evidence".

### Finding C — tag-push output was misleading

`git push origin 3.56.1` returned `HTTP 403 curl 22` on first attempt and all subsequent retries; later retry output showed `Everything up-to-date` mixed with 403 codes. β initially drafted assessment §5, §7, and §9.1 on the (wrong) assumption that the tag had not landed. Post-commit verification via `git ls-remote --tags origin 3.56.1` and `mcp__github__get_release_by_tag` showed the tag *did* reach the remote, the release workflow *did* fire at 09:34:42Z, and all 14 assets (4 binaries + 8 package tarballs + `index.json` + `checksums.txt`) were published by 09:44:09Z.

Pattern: **when git push emits `403` followed by `Everything up-to-date` in the same command, the push may have succeeded despite the error code.** Verify remote state independently before drafting process-failure narratives.

Cost: ~3 minutes of correction edits in the assessment. No code or release-state damage.

Triage: **cycle-observation pattern, not a finding.** Not a skill gap (release skill §2.6 correctly says "verify release CI starts" — which β did not do until after the assessment was drafted; that's an application lapse, not a spec issue). Note preserved in §9.1 friction log for future-β continuity.

### Finding D — β closure loop held

The 3.55.0 and 3.56.0 cycles closed with a β closure gap: post-release assessment not produced by β, required σ / γ escalation to complete. 3.56.1 closed the loop: the same β agent that reviewed and merged also produced the release commit, the post-release assessment, and this close-out — all in one session, no escalation, no squash-merge artifact destruction (the assessment and close-out were committed directly to main, not to any PR branch).

The 3.56.0 skill patch (§1.4 step 11 "commit close-out to main directly, not the PR branch — squash-merge destroys branch-only files") held by design: β never opened a second PR; release commit, assessment, and close-out all landed on main.

Triage: **drop** — positive pattern, not a finding. Worth naming explicitly so γ can track "β closure loop recovery" as an ongoing adhoc thread until it holds for 3+ consecutive cycles.

## Process friction summary

| Item | Severity | Filable? | Disposition |
|---|---|---|---|
| F1 caught by review §2.2.8 as written | — | — | positive signal; review skill worked |
| CDD §5.3 row 7a scope gap (peer-enumeration) | medium | **yes, MCA available** | α proposed addendum; β concurs; defer ship to γ |
| Tag-push misleading output | low | no | cycle-observation pattern; noted in §9.1 friction log |
| β closure loop held | — | — | positive signal; track as thread |

## §9.1 input

**Trigger fired:** **loaded skill failed to prevent a finding it covers** — CDD §5.3 row 7a schema/shape audit was active, loaded, ran cleanly, and still missed F1 because the row 7a scope does not explicitly cover peer-enumeration pairs.

**β's contribution to γ's decision:** **MCA available with a concrete mechanism.** α's row 7a peer-enumeration addendum is a one-line spec change with a grep-checkable mechanical form. β concurs. Recommend γ ship as immediate output per §10.1 + §9.1 closure rule. If deferred, carry forward to next cycle. Cycle level L5 (concurrence with α) — L6 cap because intra-doc coherence drift reached review.

## Immediate outputs written by β this cycle

- `aacb817` — squash-merge of PR #258 to main
- `7cda5b2` — release commit (VERSION 3.56.1, manifests stamped, CHANGELOG ledger row, RELEASE.md, PACKAGE-SYSTEM.md §6 history row updated)
- tag `3.56.1` pushed and verified on `origin`; release workflow fired end-to-end (14 assets published)
- `docs/gamma/cdd/3.56.1/POST-RELEASE-ASSESSMENT.md` — full post-release assessment per post-release/SKILL.md template, committed and revised after tag-push verification
- this close-out — `.cdd/releases/3.56.1/beta/253.md`

## Summary for γ

**One MCA candidate proposed by α, concurred by β, pending γ ship decision.** α's row 7a peer-enumeration addendum is a narrow one-line CDD.md edit with a concrete grep-checkable mechanical form that would have mechanically prevented F1 at authoring time. Shipping this cycle would satisfy §9.1 closure with an immediate-output MCA and likely earn the next cycle L6 at the process level.

**Positive signals to track:**
- β closure loop held — review, narrow, merge, release, assess, close-out all in one β session; both α and β close-outs committed directly to main per §1.4 step 11; no γ escalation needed. First time since 3.54.0. Worth naming as an ongoing adhoc thread so γ can track when the pattern stabilizes (3+ consecutive cycles).
- α close-out was honest and self-critical — named its own skill gap precisely and proposed a concrete mechanism. This is the kind of close-out quality that makes γ triage economic.

**Next MCA (from assessment §7):** **#250** — `cn deps lock` vendors every package in index, ignores deps.json pins. Smallest growing-lag bug with concrete reproducer; unblocks Tier 2 CI noise that has masked pin-ignore behavior across multiple cycles.

— β
