feat: indexer

[jpsains]

Note

Adds a detailed Worker/Indexer requirements doc covering architecture, configuration, database schemas, indexing flow, APIs, performance, testing, and troubleshooting.

• Documentation:
  • Add WORKER_INDEXER_REQUIREMENTS.md specifying the Worker/Indexer for MMI DeFi Adapters:
    • Architecture: main process + per-chain workers with latest and historic caches; health/metrics.
    • Configuration: adapterSettings formats (Transfer, topic0, eventAbi), metadata extraction, address transformations.
    • Database: PostgreSQL schema-per-chain; tables logs, jobs, settings, migrations; indexes and constraints.
    • Indexing Process: job initialization, block log parsing/decoding, batching, deduplication, and API query flow.
    • APIs & Data Flow: /support, /user-pools/:address, adapter filtering and metadata passthrough.
    • Examples: ERC20/721 transfers, Compound borrow, ETH2 deposits, NFT positions.
    • Operations: performance targets, scaling strategies, monitoring queries, troubleshooting, and SQL examples.

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