Seven rounds of multi-model review across five models (DeepSeek, MIMO 2.5 Pro,
GPT-5.5 Pro, Opus 4.7, Opus 4.8) with zero remaining P0/P1/P2 findings.
Coverage final: contracts 100%, events (55 durable + 7 ephemeral) 100%,
DB schema (16+1+2 tables) 100%, state machines (6 of 6) 100%, forbidden
edges (10 of 10) enforced, UML class diagrams (8 of 8) verified.
§23 checklist now split into design-verified (all checked) and
implementation-entry gates (to verify as code is written).
Frozen. Proceed to implementation.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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