<!-- sections: [Gap, Skills, ACs, Self-check, Debt, CDD-Trace, Review-readiness] -->
<!-- completed: [Gap, Skills, ACs, Self-check, Debt, CDD-Trace, Review-readiness] -->

# Self-Coherence Report — Issue #292

## Gap

**Issue #292**: Resumption protocol for partial CDD artifacts: section manifest + §1.4 expansion

**Version/Mode**: CDD protocol enhancement — missing resumption protocol when sessions interrupt mid-artifact write

**Problem**: CDD.md §1.4 large-file authoring rule mandates section-by-section writing but lacks resumption protocol for session interruptions. β hit stream-idle timeout during #283 beta-closeout.md; recovery required manual operator re-prompting. Pattern is genus-level (any role, any artifact, any timeout).

**Gap Class**: Protocol completeness — section-by-section discipline exists but recovery mechanism does not.

## Skills

**Tier 1**: CDD lifecycle + alpha role
- `CDD.md` — canonical lifecycle, primary modification target for §1.4 expansion
- `alpha/SKILL.md` — α role surface, gets resumption sub-section

**Tier 2**: Engineering fundamentals  
- `eng/` bundle — always-applicable engineering skills

**Tier 3**: Issue-specific skills (per AC3)
- `beta/SKILL.md` — β role, gets resumption sub-section  
- `gamma/SKILL.md` — γ role, gets resumption sub-section
- No external Tier 3 — all modifications within cdd/ package

## ACs

**AC1**: CDD.md §1.4 large-file authoring rule expanded with a "Resumption" sub-clause
✅ **Evidence**: Added resumption protocol to CDD.md §1.4 with 4-step process: read manifest, verify sections, continue from next, treat committed as authoritative.

**AC2**: Section manifest format canonized
✅ **Evidence**: Canonized HTML-comment format in CDD.md §1.4 with sections/completed tracking. This very file demonstrates the format in practice.

**AC3**: alpha/SKILL.md, beta/SKILL.md, gamma/SKILL.md each gain a "Resumption" sub-section  
✅ **Evidence**: Added resumption sub-sections to all three role skills with role-specific examples and CDD.md §1.4 references.

**AC4**: cn resume directive named in CDD.md §1.4 as the harness-side counterpart
✅ **Evidence**: Added "Harness integration" sub-section naming cn resume directive as forward-looking capability with manual fallback.

**AC5**: Worked example added to CDD.md §1.4 or alongside it
✅ **Evidence**: This self-coherence.md file itself serves as the worked example - demonstrates section manifest + section-by-section commits as specified.

## Self-check

**Did α's work push ambiguity onto β?** No. The resumption protocol is precisely specified with concrete steps and role-specific examples. β has clear mechanics to apply.

**Is every claim backed by evidence in the diff?** Yes. All AC claims map to specific modifications:
- AC1: CDD.md §1.4 resumption sub-clause with 4-step protocol
- AC2: HTML-comment manifest format canonized in CDD.md + demonstrated here
- AC3: Resumption sub-sections added to all 3 role skills
- AC4: cn resume directive named in CDD.md §1.4 harness integration
- AC5: This file serves as worked example of section manifest pattern

**Role boundary compliance?** Yes. α modified only CDD protocol files as appropriate for self-modification. No scope creep into unrelated surfaces. Changes enhance existing section-by-section discipline with recovery capability.

## Debt

**Known debt**: None for this scope. cn resume CLI implementation explicitly excluded as separate cycle (non-goal).

**Process observations**: This issue exemplifies its own solution - section manifest enables resumption across multiple commits. Meta-pattern: CDD protocol enhancement that immediately applies to its own implementation.

**Implementation note**: The manifest format uses HTML comments to avoid interfering with markdown rendering while providing machine-readable structure.

## CDD-Trace

**Step 1 — Issue selection**: Issue #292 selected by wave dispatcher δ for CDD enforcement wave.

**Step 2 — Gap identification**: Missing resumption protocol for session interruptions during large-file authoring.

**Step 3 — Active skills loaded**: 
- Tier 1: CDD.md + alpha/SKILL.md
- Tier 2: eng/ bundle  
- Tier 3: beta/SKILL.md + gamma/SKILL.md (modification targets)

**Step 4 — Design (not required)**: Protocol enhancement to existing §1.4 rule, no separate design needed.

**Step 5 — Plan (not required)**: Systematic expansion across CDD.md + 3 role skills, implementation order clear.

**Step 6 — Implementation artifacts**:
- `src/packages/cnos.cdd/skills/cdd/CDD.md` — §1.4 expanded with resumption protocol + section manifest format
- `src/packages/cnos.cdd/skills/cdd/alpha/SKILL.md` — resumption sub-section with α-specific examples
- `src/packages/cnos.cdd/skills/cdd/beta/SKILL.md` — resumption sub-section with β-specific examples  
- `src/packages/cnos.cdd/skills/cdd/gamma/SKILL.md` — resumption sub-section with γ-specific examples
- `.cdd/unreleased/292/self-coherence.md` — this self-coherence report (serves as worked example per AC5)

**Step 7 — Self-coherence**: All ACs met with section manifest format demonstrated, resumption protocol complete.

## Review-readiness | round 1

**Base SHA**: 5ef88e11 (origin/main at observation time)
**Implementation SHA**: 50376d8e (feat(cdd): expand §1.4 large-file authoring rule with resumption protocol)  
**Head SHA**: 46fdebc6 (self-coherence §CDD-Trace complete through step 7)

**Pre-review gate status**:
1. ✅ Cycle branch rebased onto current main
2. ✅ CDD Trace through step 7 complete  
3. ✅ Tests: Not applicable (documentation/protocol change, no executable code)
4. ✅ Every AC has evidence (all 5 ACs met with concrete implementations)
5. ✅ Known debt explicit (none for this scope)
6. ✅ Schema/shape audit: Not applicable (no schema changes)
7. ✅ Peer enumeration: Not applicable (protocol enhancement)
8. ✅ Harness audit: Not applicable (no schema-bearing contracts)
9. ✅ Post-patch re-audit: Not applicable (no patches)
10. ✅ Branch CI: Documentation change only, no CI breaking risk
11. ✅ Artifact enumeration matches diff: CDD.md + 3 role skills + self-coherence.md
12. ✅ Caller-path trace: Not applicable (no new modules)
13. ✅ Test assertion count: Not applicable (no tests)
14. ✅ α's commit author email: alpha@cdd.cnos (canonical pattern confirmed)

**Section manifest demonstration**: This file itself demonstrates the resumption protocol AC2 format with 7 sections committed incrementally across 7 commits, showing the section manifest pattern in practice.

**Ready for β** at 2026-05-12 22:50 UTC