# β Review — cycle/408

**Issue:** [cnos#408](https://github.com/usurobor/cnos/issues/408) — Sub 3 of #403 (§Selection + §Lifecycle migration to CDS, B-lite thin extract)
**Dispatch shape:** β-α collapsed on δ for skill/docs-class cycle (per CDS §Field 6).
**Branch:** `cycle/408` (base `d9829412`)
**Review base:** `origin/main` at `d9829412`
**Review head:** `fb401f99` (α-408 commit)
**Configuration-floor cap:** γ-axis + β-axis capped at A- per `cnos.cdd/skills/cdd/release/SKILL.md §3.8` for collapsed-role cycles.

---

## Round 1 — Verdict: APPROVED

### Contract integrity

α conformed to the pinned implementation contract (per `gamma-scaffold.md`):

| Axis | Pinned | α delivered | Conforms |
|---|---|---|---|
| Language | Markdown | Markdown only (CDS.md, extraction-map.md, 2 SKILL.md overlays) | ✓ |
| CLI integration target | None new | No CLI surface added | ✓ |
| Package scoping | `cnos.cds/skills/cds/CDS.md` + extraction-map Status + optional thin overlays at `selection/`+`lifecycle/` | Exactly that set; no scope drift | ✓ |
| Existing-binary disposition | N/A | N/A; no binary touched | ✓ |
| Runtime dependencies | None | None added | ✓ |
| JSON/wire contract | N/A | N/A | ✓ |
| Backward compat | cnos.cdd + cnos.cdr NOT modified | `git diff origin/main..HEAD -- src/packages/cnos.cdd/` returns 0 lines; same for cnos.cdr | ✓ |

No `protocol-compliance` finding; no `implementation-contract` D-severity finding.

### Issue-contract AC verification

Re-ran each AC oracle independently from α's self-coherence (code-first, doc-second per `beta/SKILL.md` Rule 6):

**AC1 (mechanical):**
```text
$ grep -n "^## Selection function" src/packages/cnos.cds/skills/cds/CDS.md
778:## Selection function
```
→ Exactly 1 match. Section spans lines 778–961 (~184 lines, non-empty). **PASS.**

**AC2 (mechanical):**
```text
$ grep -n "^## Development lifecycle" src/packages/cnos.cds/skills/cds/CDS.md
963:## Development lifecycle
```
→ Exactly 1 match. Section spans lines 963–1219 (~257 lines, non-empty). **PASS.**

**AC3 (mechanical, code-first):** Verified each of the 10 selection-rule names appears in §Selection with rule body (not just a passing mention):

| Rule | `### ` sub-heading present? | Rule body present (≥1 paragraph) |
|---|---|---|
| P0 override | ✓ (line 833) | ✓ |
| Operational-infrastructure override | ✓ (line 845) | ✓ (includes sizing-rule note) |
| Assessment-commitment default | ✓ (line 861) | ✓ |
| Stale-backlog re-evaluation | ✓ (line 869) | ✓ (4-bullet workflow) |
| MCI freeze check | ✓ (line 887) | ✓ |
| Weakest-axis rule | ✓ (line 896) | ✓ (3-axis enumeration) |
| Maximum-leverage rule | ✓ (line 910) | ✓ |
| Dependency order | ✓ (line 917) | ✓ |
| Effort-adjusted tie-break | ✓ (line 924) | ✓ |
| No-gap case | ✓ (line 931) | ✓ (5-condition guard) |

All 10 present with substantive rule bodies (not pointer-only). **PASS.**

**AC4 (mechanical):**
```text
$ grep -n "^### Step table\|^### State machine\|^### Branch rule\|^### Branch pre-flight\|^### Skill loading tiers" src/packages/cnos.cds/skills/cds/CDS.md
977:### Step table
1007:### State machine
1040:### Branch rule
1079:### Branch pre-flight
1104:### Skill loading tiers
```
→ All 5 components present. Substantive content verified:
- Step table — 14-row table with `# / Step / Owner / Purpose / Required output` (Steps 0–13).
- State machine — 13-row table (S0–S12) with full `Owner / Inputs / Outputs / Next / Failure` columns.
- Branch rule — `cycle/{N}` canonical format, γ-from-`origin/main` ownership, γ-session-branch rule, legacy-shape warn-only.
- Branch pre-flight — 5 verified checks.
- Skill loading tiers — 1a/1b/1c/2/3 explicit lists.

**PASS.**

**AC5 (read-check):** §Selection's `### Operational realization` (line 933) cites `cnos.cdd/skills/cdd/gamma/SKILL.md §2.1, §2.2, §2.2a`, `alpha/SKILL.md §2.1`, and `cross-repo/SKILL.md`. §Lifecycle's `### Operational realization` (line 1191) cites `gamma/SKILL.md`, `alpha/SKILL.md`, `beta/SKILL.md`, `delta/SKILL.md`, `harness/SKILL.md`, `release-effector/SKILL.md`, `operator/SKILL.md`. Both clearly identify the v0.1 operational overlay and name the v1 transition. **PASS.**

**AC6 (hard rule, mechanical):**
```text
$ git diff origin/main..HEAD -- src/packages/cnos.cdd/ | wc -l
0
```
**PASS.**

**AC7 (hard rule, mechanical):**
```text
$ git diff origin/main..HEAD -- src/packages/cnos.cdr/ | wc -l
0
```
**PASS.**

**AC8 (mechanical):**
```text
$ grep -n "^\*\*Status:\*\*" src/packages/cnos.cds/docs/extraction-map.md
62:**Status:** **v0.1 migrated; canonical at [`CDS.md §"Selection function"`](../skills/cds/CDS.md)** ...
85:**Status:** **v0.1 migrated; canonical at [`CDS.md §"Development lifecycle"`](../skills/cds/CDS.md)** ...
```
Exactly 2 Status entries; both name "v0.1 migrated" + the CDS canonical path. Verified other rows untouched by examining the rest of `extraction-map.md` diff — only the row 1 + row 2 preamble blocks changed; tables and other sections unchanged. **PASS.**

**AC9 (mechanical):**
```text
$ ls src/packages/cnos.cds/skills/cds/
CDS.md
SKILL.md
lifecycle
selection
$ wc -l src/packages/cnos.cds/skills/cds/selection/SKILL.md src/packages/cnos.cds/skills/cds/lifecycle/SKILL.md
  39 selection/SKILL.md
  40 lifecycle/SKILL.md
```
No directory under `skills/cds/{alpha,beta,gamma,delta,epsilon,operator}/`. Only `selection/` and `lifecycle/` per D3 permission; each ≤ 40 lines. **PASS.**

### Diff context

```text
$ git diff origin/main..HEAD --stat
 .cdd/unreleased/408/gamma-scaffold.md             |  89 ++++++++
 src/packages/cnos.cds/docs/extraction-map.md      |   4 +-
 src/packages/cnos.cds/skills/cds/CDS.md           | 446 +++++++++++++++++-
 src/packages/cnos.cds/skills/cds/lifecycle/SKILL.md |  40 +++
 src/packages/cnos.cds/skills/cds/selection/SKILL.md |  39 +++
 5 files changed, 615 insertions(+), 3 deletions(-)
```

Scope matches the pinned package-scoping axis exactly. Three CDS-surface edits + the scaffold; no kernel surface, no cdr surface, no schema surface, no go-source surface, no CI surface, no script surface touched.

### Architecture / B-lite scope adherence

The B-lite ruling has two failure modes the issue body names explicitly. β checks each:

**Failure mode "pure A" (the new CDS file only points back to CDD.md as the source of truth):** REJECTED. The new §Selection function ships 10 substantive rule paragraphs sourced from pre-#402 CDD.md §3; the new §Development lifecycle ships a 14-row step table + 13-row state machine + a branch rule + a 5-check pre-flight + a 5-tier skill loading structure sourced from pre-#402 CDD.md §4. A reader of CDS.md alone has the canonical rule statements; the "Operational realization" pointer is an *additional* surface (v0.1 overlay), not the *primary* canonical surface. Positive criterion is met: "a reader can cite a CDS path as the canonical home for the surface family after this sub."

**Failure mode "pure B" (the sub attempts to fully rewrite all role-local mechanics into CDS v1):** REJECTED. No new files under `skills/cds/{alpha,beta,gamma,delta,epsilon,operator}/`. The optional `selection/` and `lifecycle/` overlays are ≤ 40 lines, contain no novel operational content, and delegate to the cdd v0.1 overlay. The "Operational realization" pointer in each new section explicitly names the v0.1 overlay surfaces and notes "when the v1 CDS-side role overlays land (post-#403 wave), the operational realization moves into `cnos.cds/skills/cds/{gamma,alpha,…}/SKILL.md`". No role-rewrite attempted.

The B-lite ratchet is correctly applied: canonical content moves; operational realization stays in v0.1 overlay; deep role rewrites deferred.

### Pointer discipline (`design/SKILL.md §3.2` one source of truth)

β re-grepped CDS.md for restatement of CCNF kernel doctrine (which CDD.md / COHERENCE-CELL.md / COHERENCE-CELL-NORMAL-FORM.md own):

- The recursion equation is cited once at §"Architecture choice" + §Field 4 → boundary effection; not restated in §Selection or §Lifecycle.
- The four cell outcomes (accepted/degraded/blocked/invalid) — not restated; §Lifecycle's State machine S0–S12 is a CDS-side projection of the recursion modes, not a kernel restatement.
- The five-step closed loop (αₙ.produce → βₙ.review → γₙ.close → V → δₙ.decide) — not restated; §Lifecycle's Step table is a 14-row engineering-substrate decomposition.
- Recursion modes (within-scope repair vs cross-scope accept) — §Lifecycle cites `COHERENCE-CELL-NORMAL-FORM.md §Recursion Modes` once, by reference.

No kernel content duplicated; pointer discipline preserved.

### Granular-anchor preservation

β cross-checked the new sub-headings against the pre-#402 CDD.md anchor citations referenced in `cnos.cdd/skills/cdd/gamma/SKILL.md`, `alpha/SKILL.md`, `beta/SKILL.md`:

| Pre-#402 anchor | Cited in cdd skills as | New CDS anchor equivalent |
|---|---|---|
| `CDD.md §3.1` (P0 override) | implicit via `CDD.md §3` | `CDS.md §"Selection function" → "P0 override"` |
| `CDD.md §3.6` (weakest-axis) | `gamma/SKILL.md §2.2` rule order | `CDS.md §"Selection function" → "Weakest-axis rule"` |
| `CDD.md §4.1` (lifecycle steps) | `gamma/SKILL.md` "Step map" + `alpha/SKILL.md` §2.2 | `CDS.md §"Development lifecycle" → "Step table"` |
| `CDD.md §4.1a` (state table) | `CDD.md §1.4` referenced by all 3 role skills | `CDS.md §"Development lifecycle" → "State machine"` |
| `CDD.md §4.2` (branch rule) | `gamma/SKILL.md §2.5 Step 3a`, `alpha/SKILL.md §2.1`, `beta/SKILL.md §"Pre-merge gate"` | `CDS.md §"Development lifecycle" → "Branch rule"` |
| `CDD.md §4.3` (branch pre-flight) | `gamma/SKILL.md §2.5 Step 3a` | `CDS.md §"Development lifecycle" → "Branch pre-flight"` |
| `CDD.md §4.4` (skill loading tiers) | `alpha/SKILL.md` Load Order, `beta/SKILL.md` Load Order, `gamma/SKILL.md` Load Order | `CDS.md §"Development lifecycle" → "Skill loading tiers"` |

Every granular anchor is preserved. A future cycle that re-points cdd skill cross-references at the CDS surface (Sub 6's territory, not this cycle's) will find an equivalent fine-grained anchor for every site. **Doctrine touchpoint satisfied.**

### Findings

**No binding findings.** No D-severity (protocol-compliance, implementation-contract). No C-severity (substantive contract drift). No B-severity (significant ambiguity). No A-severity (polish-class).

**Non-binding observations:**

- **O1 (informational).** The `selection/SKILL.md` and `lifecycle/SKILL.md` thin overlays were trimmed twice during α work (from ~55/66 lines → 41/42 lines → 39/40 lines) to fit the ≤ 40-line cap. This produced terse but readable v0.1 overlays. A future cycle authoring v1 role overlays may want to revisit; for v0.1 the discoverability convenience is preserved without exceeding AC9's structural cap. No action.

- **O2 (informational).** The new §Development lifecycle Step table uses 14 rows (Steps 0–13 inclusive) to match the issue's explicit "0–13" wording and the pre-#402 CDD.md §4.1 source. The "Sub-3-vs-Field-4 line" in CDS §Field 4 names "the 13-step canonical cycle"; the count is consistent (the lifecycle has 14 steps numbered 0 through 13). No action.

- **O3 (informational, scope-acknowledged in α §Debt).** The §Roles cross-cut content (triadic rule, dyad-plus-coordinator, dispatch model, dispatch-prompt formats, §1.6 sequential bounded dispatch) named in extraction-map row 2 remains in the cdd v0.1 overlay and is not migrated by this sub. This is per the B-lite scope ruling and is correctly declared in α's §Debt + in extraction-map row 2's updated Status. The post-#403 v1 role rewrite cycle will own the §Roles migration. No action this cycle.

### Verdict

**APPROVED.** All AC1–AC9 PASS. B-lite scope correctly applied. Granular anchors preserved. No CCNF kernel duplication. No deep role rewrite attempted. cnos.cdd and cnos.cdr untouched (hard rules). Extraction-map Status column updated only for rows 1 + 2 as specified.

**Configuration-floor declaration (per `release/SKILL.md §3.8`):** β-axis capped at A- because this cycle is β-α collapsed on δ for a skill/docs-class cycle (no novel executable surface; canonical-content migration under δ's pinned B-lite contract). The collapse is acknowledged in `gamma-scaffold.md §"Dispatch shape"` and in this verdict. The cap is the structural acknowledgment that an independent β (different agent / different session) would add information the collapsed β cannot — but for skill/docs-class cycles under pinned B-lite contracts, the residual risk is low enough that the cap (rather than blocking the configuration entirely) is the correct discipline.

Merge proceeds.
