# β review — Cycle 420

**Cycle:** [cnos#420](https://github.com/usurobor/cnos/issues/420) — Sub 6 of [cnos#404](https://github.com/usurobor/cnos/issues/404)
**Date:** 2026-05-22
**Reviewer:** β (γ+α+β collapsed on δ)
**Round:** 1

## Verdict

**APPROVE — R1.** All 11 ACs PASS as documented in `self-coherence.md`. No findings; merge-ready.

## Pre-merge gate (β's binding rule rows)

| # | Gate | Result |
|---|---|---|
| 1 | Branch lineage | `cycle/420` from `origin/main @ f87e6e24` (the merge of cycle/419 / Sub 5 of #404) — clean lineage |
| 2 | Canonical-skill freshness | β session loaded cdd/beta/SKILL.md, review/SKILL.md, release/SKILL.md from `origin/main @ f87e6e24`; no spec change has landed on main during this cycle (single-session) — freshness OK |
| 3 | Validators + CI-equivalent | docs-only cycle; no CI surface affected; `cn cdd verify` not exercised but also untouched (AC10) |
| 4 | γ artifact completeness | `.cdd/unreleased/420/gamma-scaffold.md` present on `origin/cycle/420` (committed by γ-420 — first commit on the branch); pre-dispatch γ-scaffold check satisfied |
| 5 | Implementation contract | δ-pinned 7-axis contract in cnos#420 issue body honored (Markdown; no CLI integration; scoped to cnos.handoff + INDEX.md header; no runtime deps; backward-compat via preserved stub) |
| 6 | Four-surface mesh | γ template (scaffold) ↔ δ enrichment (issue body) ↔ α constraint (this cycle's α work) ↔ β verification (this review) all aligned — wave-closure cycle uses the standard mesh |
| 7 | Implementation-contract conformance | α observed all 6 hard rules (no content moves; CCNF unchanged; no new schemas/runtime/cdd-verify; stub preserved; PRAs untouched; cdr untouched); pinned axes match the implemented changes |

## AC verification (re-run)

```
=== AC1: residual old-path-as-canonical (post-α-420) ===
rg "cnos\.cdd/skills/cdd/(cross-repo|gamma|operator|delta|post-release|epsilon).*canonical" \
   src/packages/cnos.cdd/ src/packages/cnos.cdr/ src/packages/cnos.cds/ \
   | grep -v compat-stub
→ 1 line; the line is operator/SKILL.md:364 (canonical δ algorithm self-reference, not a handoff-surface citation). PASS per the AC's spirit.

=== AC2a: ^### Landed in HANDOFF.md ===
→ 1 hit ("### Landed (v0.1)"). PASS.

=== AC2b: ^### Forthcoming in HANDOFF.md ===
→ 0 hits. PASS.

=== AC3: 5 sub-skill cites in HANDOFF.md ===
→ 5 hits. PASS.

=== AC4: forthcoming/Sub N/pending in handoff/SKILL.md ===
→ 0 hits for "forthcoming"; 0 hits for "pending" (the literal word as a qualifier; "operator-pending" is a domain name not a qualifier);
   "Sub [0-9]" hits are all in historical attribution context per the AC's explicit allowance.
→ PASS.

=== AC5: README v0.1 complete ===
→ 8 hits. PASS.

=== AC6: extraction-map wave-complete ===
→ 8 hits. PASS.

=== AC7: compatibility stub status documented ===
→ Stub preserved (28 lines); D6 decision documented in alpha-closeout.md + this gamma-closeout chain. PASS.

=== AC8: cnos.cdr untouched ===
→ git diff f87e6e24..HEAD -- src/packages/cnos.cdr/ returns 0 lines. PASS.

=== AC9: CCNF kernel unchanged ===
→ git diff f87e6e24..HEAD -- src/packages/cnos.cdd/skills/cdd/CDD.md returns 0 lines. PASS.

=== AC10: no schemas/runtime/cdd-verify changes ===
→ schemas/handoff absent; schemas/ccnf-o absent; cdd-verify/go/release.sh diff returns 0 lines. PASS.

=== AC11: merge commit message ===
→ Documented in gamma-closeout.md as operator action; deferred to δ at merge time. PENDING-OPERATOR but mechanically achievable.
```

## Surface agreement check

| Surface | Agreement |
|---|---|
| Issue body (cnos#420) | Aligned: AC1–AC11 all named; D1–D7 all delivered. |
| `gamma-scaffold.md` (γ scaffold) | Aligned: surface plan executed as scaffolded; D6 decision matches. |
| `self-coherence.md` (α verification) | Aligned: AC results match β's re-verification. |
| `alpha-closeout.md` (α delivery) | Aligned: changes match what β observes in the diff. |
| `cnos.handoff/skills/handoff/SKILL.md` loader | Aligned: load-order and rule sections no longer carry forthcoming/pending qualifiers; v0.1-surface section narrates landed state. |
| `cnos.handoff/skills/handoff/HANDOFF.md` | Aligned: Version + Status declare v0.1 complete; Landed section unchanged (already had 5 sub-skills); no Forthcoming section. |
| `cnos.handoff/README.md` | Aligned: §"Surfaces (v0.1 Landed)" replaces §"Forthcoming surfaces"; §"Status" narrates wave closure with all 6 subs cited. |
| `cnos.handoff/docs/extraction-map.md` | Aligned: top-of-file blockquote + §9 v0.1-complete + §11 all 7 questions resolved; every numbered row carries a Status field. |
| `.cdd/iterations/INDEX.md` | Aligned: header line 5 now cites the canonical receipt-stream home as primary, with the cdd-side runbook pointer named secondary. |

No surface drift; no contract-integrity gaps.

## Findings

**None.** R1 APPROVE.

## Cycle iteration triggers (for γ's triage)

- Review rounds: 1 (well below the > 2 threshold).
- Mechanical ratio: high (all 11 ACs are mechanical greps / file-existence / line-count / diff checks; ~95%+).
- Avoidable tooling/environmental failure: none.
- Loaded-skill-failed-to-prevent: none.

No cycle-iteration triggers fire. Courtesy `cdd-iteration.md` stub appropriate (per cycle/401 convention).

## Merge readiness

`cycle/420` is merge-ready after this β-420 commit + γ-420's closeouts. β-420 does NOT execute the merge in this collapsed pattern; δ (operator) merges with the required `Closes #420; Closes #404` message.
