---
cycle: 308
role: β
round: 1
origin/main SHA: 1d157c7912ec209bfa856901c852d4a6298cc8ca
cycle/308 head SHA: fd5e0fd8a9f8d1a1f70926720fd6fdd701a5a165
---

# β Review — Cycle #308

## §2.0.0 Contract Integrity

| Check | Result | Notes |
|---|---|---|
| Status truth preserved | yes | Issue correctly labels shipped vs planned; self-coherence states current vs pending accurately |
| Canonical sources/paths verified | yes | review/SKILL.md, review/implementation/SKILL.md, review/contract/SKILL.md, M2-review/kata.md all verified on both branches |
| Scope/non-goals consistent | yes | Content not rewritten; phase order not changed; CTB v0.2 not promoted; per-mode katas not added — all non-goals intact |
| Constraint strata consistent | yes | Hard-gate fields (name, description, artifact_class, kata_surface, governing_question, triggers, scope) present on all three new sub-skills |
| Exceptions field-specific/reasoned | yes | `calls: []` on architecture/SKILL.md with prose instruction is reasoned (cross-package ref not I5-resolvable; matches implementation/SKILL.md precedent) |
| Path resolution base explicit | yes | All paths in calls arrays are package-skill-root-relative; consistent with existing sub-skills |
| Proof shape adequate | yes | AC oracles are concrete: frontmatter parse, find oracle, grep, line counts — each AC has an explicit test |
| Cross-surface projections updated | yes | contract/SKILL.md footer, schemas/skill.cue comment, M2-review/kata.md all updated |
| No witness theater / false closure | yes | No structural-prevention claims; no runtime enforcement claims; content relocation confirmed by diff |
| PR body matches branch files | n/a | No PR (triadic protocol; coordination via cycle branch) |

---

## §2.0 Issue Contract

### AC Coverage

| # | AC | In diff? | Status | Notes |
|---|----|----------|--------|-------|
| AC1 | Three new sub-skills with valid CTB v0.1 frontmatter | yes | MET | All 7 hard-gate fields present on each new sub-skill; verified against schema |
| AC2 | review/implementation/SKILL.md deleted | yes | MET | Deleted via git rm; confirmed absent from branch tree |
| AC3 | Orchestrator updated (calls, Phase 2 body, deferred-split note removed) | yes | MET | calls array updated; Phase 2 body replaced; deferred-split note gone |
| AC4 | Each sub-skill is independently loadable | yes | MET | 63/108/77 lines respectively; inputs/outputs declared; no undeclared cross-sibling state |
| AC5 | M2-review kata cross-references updated | yes | MET | kata.md now references review/architecture/SKILL.md; grep confirms 0 stale refs |
| AC6 | Phase order in orchestrator unchanged | yes | MET | Phase 1 to Phase 2 to Phase 3 intact; sub-skill order matches original section order |

### Named Doc Updates

| Doc / File | In diff? | Status | Notes |
|------------|----------|--------|-------|
| review/SKILL.md (orchestrator) | yes | updated | calls array + Phase 2 body + deferred-split note removed |
| review/issue-contract/SKILL.md | yes | created | new sub-skill |
| review/diff-context/SKILL.md | yes | created | new sub-skill (renamed from implementation/) |
| review/architecture/SKILL.md | yes | created | new sub-skill |
| review/implementation/SKILL.md | yes | deleted | monolith removed |
| review/contract/SKILL.md | yes | updated | footer updated to point at issue-contract |
| schemas/skill.cue | yes | updated | comment example updated |
| M2-review/kata.md | yes | updated | architecture-check ref rewired |

### CDD Artifact Contract

| Artifact | Required? | Present? | Notes |
|----------|-----------|----------|-------|
| self-coherence.md | yes | yes | present on branch; carries gap, mode, AC mapping, CDD Trace, review-readiness signal |
| beta-review.md | yes | in progress | this document |
| alpha-closeout.md | no (post-merge) | n/a | α writes after merge |
| beta-closeout.md | no (post-merge) | n/a | β writes after merge |

### Active Skill Consistency

| Skill | Required by | Loaded? | Applied? | Notes |
|-------|-------------|---------|----------|-------|
| CDD.md | Tier 1a (always) | yes | yes | lifecycle and role contract |
| alpha/SKILL.md | Tier 1a (always) | yes | yes | α role surface |
| cnos.core/skills/design/SKILL.md | issue Tier 3 | yes | yes | governs one-reason-to-change decomposition; applied to sub-skill boundary decisions |
| cnos.cdd/skills/cdd/review/SKILL.md | issue Tier 3 | yes | yes | parent skill verified; phase contract intact |

---

## §2.1 Diff and Context Inspection

### 2.1.1 Structural closure

No closure claims made. This is a content-preserving structural relocation. No input source enumeration required.

### 2.1.2 Multi-format semantic parity

The three new sub-skills carry the same cognitive content as the original sections. Diff confirms:
- issue-contract/SKILL.md: contains the four-table issue contract walk (AC coverage, named doc updates, CDD artifact contract, active skill consistency)
- diff-context/SKILL.md: contains all 13 checks from §2.1.1 through §2.1.13, verbatim
- architecture/SKILL.md: contains the 7-question table (A-G) and architecture check rules

Content is verbatim relocated; only frontmatter, "After Phase" footers added.

### 2.1.4 Stale-path validation

Old path: `review/implementation/SKILL.md`

Live surfaces updated: review/SKILL.md (calls + Phase 2 body), review/contract/SKILL.md (footer), schemas/skill.cue (comment), M2-review/kata.md (architecture ref). Historical artifacts (.cdd/releases/3.63.0/301/) correctly exempt as immutable records.

The `calls_dynamic` field that existed on implementation/SKILL.md now lives only in the orchestrator's frontmatter. Sub-skills do not need it. This is correct: orchestrator owns dynamic dispatch declarations.

### 2.1.8 Authority-surface conflict

- Orchestrator's `calls` array matches new file paths on disk: confirmed.
- architecture/SKILL.md uses `calls: []` with prose instruction to load the design skill when active. This matches the original implementation/SKILL.md precedent and the I5 constraint (cross-package refs not resolvable by the validator). No conflict.

### 2.1.11 Architecture leverage

The split is the architecture leverage move the issue names. It eliminates the monolith's one-reason-to-change violation. The deferred-split note in the original orchestrator already identified this as the correct next step. The move is complete.

### 2.1.13 Project design constraints

Applied correctly per cnos.core/skills/design/SKILL.md: one reason to change per skill; orchestrator owns phase order and verdict; sub-skills own cognitive mode. No constraint violated.

---

## §2.2 Architecture and Design Check

| Check | Result | Notes |
|---|---|---|
| Reason to change preserved | yes | Each new sub-skill has one reason: issue-contract (CDD artifact rules change), diff-context (implementation review patterns change), architecture (design boundaries shift) |
| Policy above detail preserved | yes | Orchestrator owns phase order and verdict rules; sub-skills own only their cognitive mode |
| Interfaces remain truthful | yes | Each sub-skill's inputs/outputs match what it actually consumes/produces |
| Registry model remains unified | n/a | No registry involved |
| Source/artifact/installed boundary preserved | n/a | Skill files only; no build/install pipeline |
| Runtime surfaces remain distinct | yes | Orchestrator, Phase 1, Phase 2 sub-skills (2a/2b/2c), and Phase 3 verdict are distinct load surfaces |
| Degraded paths visible and testable | n/a | No degraded/fallback paths in skill loading |

---

## Findings

| # | Finding | Evidence | Severity | Type |
|---|---------|----------|----------|------|
| — | No findings | All ACs met; no stale paths remain; architecture boundaries intact | — | — |

## Notes

CI state: The `build.yml` workflow triggers on `push: branches: [main]` and `pull_request: branches: [main]`. No CI runs on `cycle/308` push alone — this is the documented protocol for triadic CDD cycles (no PR; β merges directly). Main's last CI run (`1d157c79`, run 25158163255) is green. The diff is Markdown and YAML only — no Go code, no scripts changed. The I5 (skill-frontmatter-check) and I4 (link-check) gates will pass: new sub-skills carry all hard-gate frontmatter fields; new files contain no markdown links.

---

## Verdict

**Verdict:** APPROVED

**Round:** 1
**Fixed this round:** n/a (round 1)
**Branch CI state:** provisional — no CI runs on cycle/308 push (no PR; triadic protocol). Main CI green at base `1d157c79`. Post-merge CI expected green (Markdown/YAML-only diff; all hard-gate frontmatter present; no broken links introduced).
**Merge instruction:** `git merge --no-ff cycle/308` into main with `Closes #308` in the merge commit message.

### Approval rationale

All six ACs are met with concrete oracle evidence. The diff is a content-preserving structural relocation: three new sub-skills each own one cognitive mode; the monolith is deleted; the orchestrator's calls array enumerates the new siblings; the deferred-split note is removed; the M2-review kata reference is rewired. No stale paths remain in live surfaces. No findings.

The implementation satisfies the issue's stated design constraint (one reason to change per skill) and the stated non-goals (no content rewriting, no phase reordering, no CTB v0.2 promotion, no per-mode katas). The search space is closed.
