[chain/devnet] Define local FlowPulse receipt fixture handoff

[FlowmemoryAI]

Objective

Define how local Anvil FlowPulse receipts from infra/chain become deterministic fixtures for future indexer/verifier tests.

Allowed folders

• infra/chain/
• research/appchain/
• docs/ARCHITECTURE.md only for cross-linking
• docs/DECISIONS/ if fixture identity assumptions change

Forbidden folders

• Production indexer runtime
• Production verifier runtime
• Deployment scripts for public networks
• Tokenomics, validator rewards, staking, or slashing
• Dashboard UI
• Hardware CAD
• Contracts outside contracts/flowmemory-chain/ unless explicitly approved

Acceptance criteria

• Define the receipt/log fields that must be captured from the local demo.
• Define fixture file shape and redaction rules.
• Define how txHash, transactionIndex, and logIndex are preserved for observation identity tests.
• Define how re-running the demo avoids committing nondeterministic local artifacts.
• Hand off implementation to the Indexer/Verifier Agent if files outside the chain bucket are required.

Risk level

Medium

Recommended agent

FlowMemory Chain / Appchain Agent with Indexer/Verifier Agent handoff