Resolution pipeline

At epoch end, the engine performs a deterministic pipeline:

1. Detect boundary (epoch advanced / cutoff reached)
2. Select canonical slot for resolution
3. Fetch finalized blockhash for that slot
4. Derive winning number using the documented algorithm
5. Compute winners and payouts
6. Publish result artifact (e.g., S3 + Arweave/Irys)
7. Persist outcome state (DynamoDB / on-chain PDA references)
8. Enable claiming

Idempotency

Each step uses stable keys (epoch/tier/etc.) so retries do not double-pay or double-publish.