# β Close-out — Issue #305

## Review Context

**Cycle:** #305 — tools(cdd): extend cdd-verify for current cycle-scoped artifacts  
**α implementation quality:** High - complete AC coverage, comprehensive test suite, proper shell script standards  
**Review rounds:** 1 (single-pass approval)  
**Review phases:** Contract integrity → Issue contract → Diff/context inspection → Architecture check → Approved  

## Narrowing Pattern

**Pattern:** Straightforward enhancement cycle. No scope creep, no design ambiguity, clear requirements with concrete acceptance criteria.

**Review progression:** 
- Phase 1 (Contract): All checks passed immediately - issue well-formed, scope clear, sources canonical
- Phase 2a (Issue contract): Complete AC coverage verified, all 7 ACs present in diff with evidence
- Phase 2b (Diff/context): No structural issues, design constraints followed, adequate proof shape  
- Phase 2c (Architecture): No boundary violations, single responsibility preserved
- All phases: ✅ PASS → Direct approval

**No blocking findings surfaced.** Implementation met requirements on first review pass.

## Merge Evidence

**Branch merged:** cycle/305 → main  
**Merge commit:** Fast-forward merge 2a509635..53035be5  
**Push result:** Successfully pushed to origin/main  
**Issue closure:** #305 manually closed (fast-forward bypassed auto-close)  
**Files changed:** 4 files, +570/-6 lines  

**Merge tree validation:** ✅ Pre-merge gate passed
- Identity truth verified (beta@cdd.cnos)
- Canonical skills current (origin/main up to date)  
- Non-destructive merge test clean (29/29 test assertions passed)

## Release Evidence

**Ready for δ tag:** ✅ Yes - implementation complete, tested, merged  
**Release artifacts present:** All required (.cdd/unreleased/305/ with self-coherence + beta-review + beta-closeout)  
**Version impact:** Minor enhancement (extends existing command with new mode)  
**Deployment readiness:** Ready - no runtime dependencies, backward compatible  

## Cycle Findings  

**β-side observations:**

1. **α implementation discipline strong** — Complete self-coherence artifact with explicit CDD trace, all ACs mapped to evidence, debt documented and scoped appropriately

2. **Test coverage exemplary** — Extended suite from 22 to 29 assertions with proper oracle-driven positive/negative test cases for all new functionality

3. **Shell script standards followed** — Proper use of set -euo pipefail, clear error messages, validation logic consistent with existing command patterns

4. **Issue formation effective** — Clear gap statement, concrete ACs with invariant/oracle/evidence structure, appropriate scope boundaries with explicit deferrals

**No process friction identified.** Standard triadic flow executed smoothly from dispatch through merge.

**No skill gaps surfaced.** Loaded review skills (contract, issue-contract, diff-context, architecture) provided adequate coverage for this enhancement cycle.

---

**β role complete.** γ owns post-release assessment and cycle closure.