[indexer/verifier] Build minimal fixture-based FlowPulse parser

[FlowmemoryAI]

Objective

Define and implement the smallest fixture-based FlowPulse parser for the indexer/verifier foundation.

Allowed folders

• services/indexer/
• services/shared/
• services/verifier/ only for test fixtures or cross-reference terminology
• docs/ only for behavior or assumption updates
• research/indexer-verifier/ only for parser research notes

Forbidden folders

• contracts/
• hardware/
• apps/
• crypto implementation
• chain/L1 implementation
• tokenomics
• production RPC deployment
• production database deployment

Acceptance criteria

• Parses synthetic FlowPulse log fixtures only.
• Validates topic0 against FlowPulse v0.
• Decodes indexed fields and static data fields from fixtures.
• Keeps uri advisory and untrusted.
• Adds fixture-based tests.
• Does not use live RPC, databases, env secrets, or production service runtime.

Risk level

Medium

Recommended agent

FlowMemory Indexer / Verifier Agent