# γ close-out — cycle #398 (Phase 4b of #366)

**Author:** γ (collapsed on δ)
**Cycle:** cnos#398 — harness substrate (observability + worktree + identity)
**Branch:** `cycle/398` HEAD `b570ddb3` (α closeout) → merging to `main`
**Status:** all 7 ACs satisfied (AC7 deferred to post-merge close-out comments per CDD §1.4 phase 5b)
**Mode:** §5.2 single-session δ=γ=α=β-collapsed-on-δ

## Close-out triage

| Finding | Source | Type | Disposition | Artifact / commit |
|---|---|---|---|---|
| F1: delta/SKILL.md (Phase 4a artifact) contains "Phase 4b — harness substrate (pending)" prose and references "harness mechanics currently living in operator/SKILL.md" which are factually stale post-cycle-#398 | β-review.md §Stale-references | skill | next MCA — Phase 5 (γ shrink) or a dedicated sweep cycle; scope-control rule prevents in-cycle patch | cdd-iteration.md entry |
| F2: `delta/SKILL.md` (Phase 4a artifact) has a CUE schema finding (`requires.1` type mismatch) | β-review.md + frontmatter validator | tooling | dropped from this cycle (pre-existing on origin/main; not introduced by #398; out of scope) | cdd-iteration.md entry; surface to Phase 5 or a frontmatter sweep |
| F3: cnos.cdr/ skills have 15 pre-existing frontmatter validator findings | frontmatter validator | tooling | dropped from this cycle (pre-existing; not introduced; cnos#376 sub-issues will resolve) | none required |

## §9.1 trigger assessment

| Trigger | Fired? | Action |
|---|---|---|
| Review churn (>2 rounds) | No | n/a |
| Mechanical overload (mechanical ratio >20% AND total findings ≥10) | No | n/a |
| Avoidable tooling / environment failure | No (delta/SKILL.md frontmatter issue exists but pre-existing) | n/a — F2 is non-blocking and pre-existing |
| Loaded-skill miss | No | n/a |

No §9.1 triggers fired.

## Cycle iteration

Per `CDD.md` Step 13: did this cycle reveal a recurring friction? Yes — see `cdd-iteration.md` for two `cdd-skill-gap` findings (F1 and F2 above).

## Deferred outputs

- **AC7 close-out comments** on cnos#371 #373 #384: filed post-merge by δ, naming cnos#398 as the absorbing cycle and setting state=closed, state_reason=completed.
- **delta/SKILL.md stale-reference sweep:** queued for Phase 5 (γ shrink) per F1 disposition.

## Hub memory

- harness/SKILL.md is the canonical home for dispatch substrate doctrine.
- operator/SKILL.md is now WHY-only for dispatch-coordinator mechanics; HOW lives in harness.
- delta/SKILL.md is the canonical home for δ-role boundary policy (Phase 4a, cycle/397).
- Release-effector mechanics remain in operator/SKILL.md §3.4 until Phase 4c (cycle/399 / TBD).

## Next MCA

cnos#366 Phase 4c (release-effector relocation) is the next phase-chain MCA. Phase 4b ships this cycle; Phase 5 (γ shrink) gates on 4c shipping (so that operator/SKILL.md is fully drained of mechanics before γ-shrink considers its surface).

## Closure declaration

**Cycle #398 closed. Phase 4b of cnos#366 shipped. Next: Phase 4c (release-effector) or Phase 5 (γ shrink) depending on δ priority.**
