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# β Closeout — Cycle #388

**Cycle:** [#388](https://github.com/usurobor/cnos/issues/388) — Phase 2.5 (#366): split generic `schemas/cdd/` from CDS/CDR domain evidence
**Date:** 2026-05-21
**Branch:** `cycle/388`
**Review SHA (cycle branch head):** `7294b473d849740f9fbae252d267b3396fe27497`
**β identity:** beta / beta@cdd.cnos (γ+α+β-collapsed on δ; β-α-collapse acknowledged in `beta-review.md`)

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## §Verdict

**APPROVED.** R1 — no fix-round required. All seven ACs met on the first mechanical oracle pass.

The β-α-collapse is structurally appropriate for schema-refactor class work: every AC oracle is mechanical (rg / `cue vet` / file-existence / re-read for citation completeness), not subjective judgment. The collapse is explicitly named in `beta-review.md §"β-α-Collapse Acknowledgment"`.

## §Review Summary

| AC | Oracle | Result |
|---|---|---|
| AC1 | Architectural-choice section in `schemas/cdd/README.md` with option (a) declared, (b) rejected, rationale 1-5 enumerated, cross-reference to cnos#376 AC7, citation to essay | ✓ section spans 67-160, all required content |
| AC2 | `rg ".*_ref|ci_refs" schemas/cdd/` returns 0 hits | ✓ rg exit 1 |
| AC3 | `cue vet -c -d "#CDSReceipt" ...` exit 0; negative tests exit 1 | ✓ valid passes; missing-key + wrong-protocol_id fail with diagnostics |
| AC4 | `cue vet -c -d "#CDRReceipt" ...` exit 0; negative tests exit 1; field set matches ROLES §4a.3 | ✓ valid passes; empty-list + bad-enum fail; field set matches §4a.3 (with named debt for forward-looking refinements) |
| AC5 | Fixture layout matches expected; each at correct schema | ✓ layout verified; each fixture validates at correct target |
| AC6 | Full cue vet suite regression-free | ✓ 3 valid pass, 3 invalid fail; skill-frontmatter self-test unaffected |
| AC7 | `protocol_id` structural in `#Receipt`; pinned in `#CDSReceipt`/`#CDRReceipt`; in every fixture | ✓ verified per-file |

Contract integrity: all 11 rows of the integrity check table verify (β-review §"Contract Integrity").

## §Findings

**R1 findings: none.**

**Non-blocking observations** (carried from β-review for record; do not block merge):

1. **CUE module file at repo root.** New top-level `cue.mod/` directory + `module.cue`. Sanity-checked: skill-frontmatter self-test unaffected. Documented inline.
2. **CDR `evidence_refs` lists use min-length-one constraint.** Pattern `[_, ...#EvidenceRef]` enforces what ROLES §4a.3 names structurally.
3. **`#Receipt.evidence_refs` widened to union value type.** `#EvidenceRefValue = #EvidenceRef | [...#EvidenceRef]`. Allows both CDS (singular) and CDR (list-shaped) keys. Design finding during build half; documented.
4. **Essay update deferred** — see Debt below.
5. **γ skill does not emit `protocol_id`** — Phase 3 or γ-skill follow-up.
6. **ROLES §4a.3 vs realized CDS field divergence** — see Debt below.

## §Debt-Confirmed

β confirms the four debt items named in `self-coherence.md §Debt` and `alpha-closeout.md §Debt`:

1. **ROLES §4a.3 CDS sketch vs `schemas/cds/` realized shape divergence** — known; a future cycle may align if convergence is desired. Documented in `schemas/cds/README.md §"Forward-looking debt"`.
2. **CDR schema is a skeleton** — cnos#376 Sub 1/Sub 2 owns refinement. Documented in `schemas/cdr/README.md §"Skeleton — not frozen"`.
3. **Essay v0.1.0 open-question #1 resolution not folded** — deferred to a follow-up doc cycle. Named in gamma-closeout.
4. **γ skill does not yet emit `protocol_id` automatically** — Phase 3 or γ-skill follow-up.

All four are tracked debt, not blockers.

## §Skills-That-Helped

- `src/packages/cnos.cdd/skills/cdd/issue/proof/SKILL.md` — AC oracle re-checking; β re-ran each oracle mechanically.
- `src/packages/cnos.eng/skills/eng/code/SKILL.md` — CUE refactor verification: confirmed `import` resolution works via `cue.mod/`; confirmed cross-package unification (`#CDSReceipt: cdd.#Receipt & {...}`) preserves the generic invariants (transmissibility derivation, override-iff, protocol_gap consistency).

## §Outputs

- `.cdd/unreleased/388/beta-review.md` — full R1 review with verdict APPROVE, β-α-collapse acknowledgment, contract integrity table, AC coverage matrix, diff context, architecture commentary, findings.
- `.cdd/unreleased/388/beta-closeout.md` — this file.

γ may proceed to merge.
