# Post-Release Assessment — v3.48.0

## 1. Coherence Measurement

- **Baseline:** v3.47.0 — α A, β A+, γ A
- **This release:** v3.48.0 — α A+, β A+, γ A+
- **Delta:** All three axes improved. α improved (build command + purity boundary rules in eng/go). β improved (INVARIANTS.md makes architectural constraints explicit + BUILD-AND-DIST.md). γ improved (CDD lifecycle now validates invariants at 4 touchpoints).
- **Coherence contract closed?** Yes. AC4 (build), AC7 (interface), AC8 (tests), AC9 (6 commands) all met. 3 review findings found and fixed on-branch.

## 2. Encoding Lag

| Issue | Title | Type | Design | Impl | Lag |
|-------|-------|------|--------|------|-----|
| #221 | cli/ extraction | refactor | converged | not started | new |
| #193 | Orchestrator llm step | feature | converged | not started | growing (11 cycles) |
| #186 | Package restructuring | feature | design doc shipped | not started | growing |
| #175 | CTB → orchestrator IR compiler | feature | converged | not started | growing |
| #218 | cnos.transport.git | feature | design doc shipped | not started | growing |
| #216 | Kernel command migration | feature | design doc shipped | depends on Phase 4 | growing |
| #192 | Go kernel rewrite | feature | converged | Phase 3 Slices A-C done | low |
| #212 | Phase 3 remaining commands | feature | converged | Slice D remaining | low |

**MCI/MCA balance:** MCI freeze remains active — 6 growing items. However, no new design docs were created this cycle (INVARIANTS.md and BUILD-AND-DIST.md captured decisions already made, not new commitments). The freeze is holding.

## 3. Process Learning

**What went wrong:** INVARIANTS.md v1.0.0 mixed three tiers (active invariants, transition targets, implementation heuristics) and had direct conflicts with CDD §1.2 (two-agent minimum scope) and the package-system doc (content classes). Required operator correction. Root cause: skill-loading gate violation — design skill not loaded before writing constitutive doc.

**What went right:** Operator caught the v1.0.0 issues immediately. v1.1.0 iteration was clean. The subsequent eng/go + CDD integration closed the prevention gap (rules where implementer reads them, not just where reviewer checks them). §7.0 gate continues to work — all 3 PR #220 findings fixed on-branch.

**Skill patches this cycle:**
- eng/go §2.17 (Parse/Read purity boundary)
- eng/go §2.18 (cli/ dispatch boundary)
- CDD review §2.2.13 (project design constraints check)
- CDD §2.4 (load project invariants)
- CDD §2.5 (pre-coding gate)
- CDD §2.5a item 5 (affected invariants in handoff)
- CDD post-release §6a (invariants check at close)

**CDD improvement disposition:** 7 skill patches this cycle — highest ever. All driven by the INVARIANTS.md v1.0.0 failure: one constitutive error produced a chain of MCA fixes that strengthened the entire lifecycle. This is the CDD self-learning loop working as designed.

## 4. Review Quality

**PRs this cycle:** 1 (#220)
**Avg review rounds:** 2 (R1: 3 findings, R2: all fixed) — at target
**Superseded PRs:** 0
**Finding breakdown:** 1 mechanical (F1 close errors) + 2 judgment (F2 NeedsHub, F3 purity) / 3 total
**Mechanical ratio:** 33% — above 20% threshold
**Action:** F1 (close errors) is a stdlib awareness gap. eng/go §2.11 covers "don't reimplement stdlib" but doesn't cover "check all return values from Close()." Consider adding a close-error rule. Deferred — low frequency (first occurrence).

### 4a. CDD Self-Coherence

- **CDD α:** 4/4 — all required artifacts present
- **CDD β:** 4/4 — invariants doc, eng/go rules, CDD lifecycle all agree
- **CDD γ:** 4/4 — 7 skill patches, clean review cycle, invariants validated
- **Weakest axis:** none
- **Action:** none

## 5. Production Verification

**Scenario:** `cn build` assembles packages from source
**Before this release:** no `build` command in Go binary
**After this release:** `cn build` validates and tarballs packages, `cn build --check` for CI
**How to verify:**
```bash
ssh root@143.198.14.19 'cd /home/cn/cn-sigma && cn build --check'
```
**Result:** deferred — requires binary deploy

## 6. CDD Closeout

| Step | Artifact | Skills loaded | Decision |
|------|----------|--------------|----------|
| 9 Review | PR #220 comments (R1 + R2) | review | 3 findings, all fixed on-branch |
| 10 Release | tag 3.48.0, RELEASE.md, CHANGELOG | release | v3.48.0 released at 10e7974 |
| 11 Observe | this assessment | post-release | build shipped, invariants lifecycle complete |
| 12 Assess | POST-RELEASE-ASSESSMENT.md | post-release | assessment completed |
| 13 Close | next MCA below | post-release | cycle closed |

### 6a. Invariants Check

| Constraint | Touched? | Status |
|---|---|---|
| INV-001 One package substrate | Yes (build command) | preserved — build produces cn.package.v1 tarballs |
| T-002 Kernel remains minimal | Yes (build added to kernel) | preserved — acknowledged interim per #216 |
| T-004 Source/artifact/installed explicit | Yes (BUILD-AND-DIST.md) | tightened — three-tier flow now documented |
| T-005 Content classes explicit and finite | Yes (build traverses 7 classes) | preserved — same 7 classes |
| P-001 Two-agent minimum | Yes | preserved — Claude authored, Sigma reviewed |
| P-002 Findings before merge | Yes | preserved — 3 findings fixed on-branch |

## 7. Next Move

**Next MCA:** #221 — extract command logic from cli/ into domain packages
**Owner:** Claude (implementor), Sigma (reviewer/releaser)
**Branch:** `claude/go-cli-extract`
**First AC:** cli/ contains ONLY types + thin wrappers
**MCI frozen until shipped?** Yes
**Rationale:** 6 growing items. Ship #221 (mechanical refactor) then Slice D.

**Closure evidence (CDD §10):**
- Immediate outputs executed: yes
  - INVARIANTS.md shipped and iterated
  - CDD lifecycle patches (7 total)
  - eng/go §2.17 + §2.18
  - BUILD-AND-DIST.md
  - #221 filed
- Deferred outputs committed: yes
  - #221, #212 Slice D remain open

## 8. Hub Memory

- **Daily reflection:** `cn-sigma/threads/reflections/daily/20260410-j.md` — committed at `340606d98`
- **Adhoc thread(s) updated:** `cn-sigma/threads/adhoc/20260409-go-kernel-rewrite.md` — committed at `340606d98`
