[Milestone 3] Multi-Protocol Expansion

[Patrick-Ehimen]

Parent Issue #34

Goal

Add decoders for Wormhole, Axelar, and Chainlink CCIP. All four protocols indexed into the same unified schema.

Tasks

• Implement Wormhole decoder (LogMessagePublished, TransferRedeemed) with (emitterChain, emitterAddr, sequence) correlation
• Implement Axelar decoder (ContractCall, ContractCallApproved, Executed) with commandId correlation
• Implement CCIP decoder (CCIPSendRequested, ExecutionStateChanged) with messageId correlation
• Map Wormhole chain IDs and CCIP chain selectors to standard EVM chain IDs
• Map Axelar chain name strings to chain IDs
• Refactor to decoder registry pattern: register all decoders via Decoder interface
• Verify unified schema consistency across all 4 protocols
• Unit tests for each new decoder with sample encoded events
• Cross-protocol integration test: index from all 4 protocols, verify unified output
• Regression tests ensuring LayerZero decoder is unaffected

Deliverables

• Working decoders for Wormhole, Axelar, and CCIP
• Decoder registry with clean plugin interface
• All 4 protocols indexing and correlating messages correctly
• Unified messages queryable in PostgreSQL regardless of protocol
• Per-protocol Parquet archives on Akave O3

Acceptance Criteria

• Each decoder correctly parses at least 3 sample events (unit tested)
• Indexer with all 4 protocols enabled indexes messages from each
• Cross-chain correlation works for all protocols: source + destination linked, status updated
• Adding a new decoder requires only implementing Decoder interface and registering it
• All tests pass, no regressions in existing functionality