## Verdict
**ITERATE**

## Claim Checks

- The immutable target was read in full. The target run's `index.jsonl` records `stage-37-revision.md` at revision stage 37 with SHA-256 `ee8973a60b3f4dcd4a7bda75664142c6d506012924607e722df3b47b9e43fd9a`, exactly matching the assignment.
- Stage-36 Required Change 1 is structurally closed for fresh versus replayed authority. Revision 37 defines a sealed return union, gives the duplicate result a named non-authorizing type, and requires `DiagnosticHost.deliver` to pattern-match before `verify_provider_start`; only `VerifiedDiagnosticReservation` can reach the frozen transport. This removes the contradictory unconditional host sequence identified at Stage 36.
- Stage-36 Required Change 2 is closed for the two crash rows that previously lacked semantics. An exact unconsumed `delivery_attempt_started` row and an exact consumed row without a receipt/terminal are each terminalized by appending or reusing one linked `delivery_unknown`, return `DiagnosticUnknownNoSend`, and never recreate provider authority. Startup recovery runs before diagnostic revalidation and applies the same rule, so the post-reservation crash simulation is no-send. Same-dedupe pin/body/destination/session/generation/spec/binding conflicts fail with no new row/provider.
- Stage-36 Required Change 3 is closed mechanically. `RegisteredCustomerBinding.mode` distinguishes `diagnostic_isolated_v1`; the public ordinary delivery entry and every ordinary reservation helper must reject that mode before locking or appending, while the diagnostic path requires a module-private host token. Direct-call zero-delta tests plus AST/code-search ownership tests make “host-only reservation writer” enforceable rather than merely a configured call path. This fits the current implementation seam: `AdaptiveNutritionCoordinator` retains `customer_runtime` (`gateway/platforms/nutrition_coaching.py:4728-4811`), and its ordinary `deliver_latest_once` currently owns reservation creation (`:10794-10995`), so the mode guard can occur before the existing topic/authority/store work.
- Representative fresh-delivery simulation is actionable: a diagnostic child produces a fully pinned candidate; the host holds the admission lock; authority validation occurs before rows; the adaptive lock appends and rereads one reservation; only the fresh verified variant reaches provider-start verification and the exact frozen diagnostic transport; durable receipt/audit or unknown terminalization completes before the admission lock releases.
- Representative restart simulation is also actionable for started/consumed-without-receipt rows: startup recovery changes each exact uncertain chain to one linked unknown, and a later delivery returns the non-authorizing unknown variant with provider zero.
- One retained-state contradiction remains. Revision 37 groups “receipt/delivered/audit-pending/sent-audited/unknown terminal chain” into `DiagnosticDuplicateNoSend`, whose discriminant is fixed as `status="duplicate"`. The retained canonical contract requires materially different caller-visible states: unknown must remain `delivery_unknown` with the no-resend/reconcile warning; receipt/delivered/audit-pending must remain audit-pending with the receipt-recovery warning; only a completed audited repeat is duplicate. The canonical runbook states these separately (`PILOT_RUNBOOK.md:137-142,183-187`), and current implementation likewise maps audited to duplicate but receipt/delivered/audit-pending to `audit_pending` (`gateway/platforms/nutrition_coaching.py:10391-10435`) and maps unknown/audit-pending/duplicate to three distinct Korean outcomes (`:2717-2727`). “Using canonical existing status” cannot be implemented consistently while the sealed result says `status="duplicate"`.

## Missing Evidence

Definitely missing: an exact, non-contradictory result variant/discriminant and precedence rule for each already-existing terminal chain. In particular, the plan does not say how an existing unknown or receipt/audit-pending chain can preserve its canonical status and exact operator outcome without violating the fixed `DiagnosticDuplicateNoSend.status="duplicate"` contract.

## Approval Boundary

Execution may proceed with the cumulative sealed registered/standalone factories, acyclic digest schema, fresh host-owned reserve-and-verify sequence, started/consumed crash recovery, and diagnostic-mode rejection of ordinary reservation APIs. Caller-visible replay/restart result typing for existing receipt, audit-pending, unknown, and audited chains is not approved until the terminal matrix preserves the retained no-retry/reconciliation semantics. All Stage-33 read-lock, packaging, route-generation, timeout/cancellation, human-only, and no-live-Telegram boundaries remain unchanged.

## Summary

- **Clarity:** High for fresh, started-crash, consumed-crash, conflict, and ordinary-bypass paths; contradictory for existing terminal result discriminants.
- **Verifiability:** Strong row/provider-delta coverage; exact status/text assertions need a coherent terminal mapping.
- **Completeness:** All three Stage-36 changes are addressed, but Required Change 2 is not fully closed for already-terminal caller outcomes.
- **Big Picture:** Host-owned authority and conservative restart recovery fit at-most-once delivery; collapsing no-retry incident states into duplicate would hide required operator action.
- **Principle/Option Consistency:** Sealed authority and sole-writer principles are strong; the fixed duplicate discriminant conflicts with the retained canonical status model.
- **Alternatives Depth:** Adequate cumulatively; no topology redesign is needed.
- **Risk/Verification Rigor:** Race, crash, conflict, and provider-zero rigor is strong; terminal-state presentation/reconciliation precedence needs one bounded correction.

## Required Changes

1. Split or generalize the existing-terminal no-send variants so canonical state is preserved: exact `delivery_unknown` returns `DiagnosticUnknownNoSend` with `status="delivery_unknown"` and the retained no-resend text; receipt/delivered/audit-pending without `sent_audited` returns an explicit audit-pending no-send variant (or equivalent canonical-status variant) with `provider_authority=false` and the retained receipt-recovery text; a chain containing `sent_audited` returns `DiagnosticDuplicateNoSend` with `status="duplicate"` and the retained already-processed text. Define precedence for valid multi-row chains such as audit-pending followed by sent-audited, and fail closed on incompatible mixed terminal chains.
2. Extend the promised matrix tests to assert the exact result type, status, Korean text, row delta, provider delta, and reconciliation availability for existing unknown, receipt-only, delivered-without-audit, audit-pending, and sent-audited chains, including restart recovery.