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Created complete V2 foundation infrastructure for modular MEV bot: Core Types (pkg/types/): - swap.go: SwapEvent with protocol support for 13+ DEXs - pool.go: PoolInfo with multi-index cache support - errors.go: Comprehensive error definitions - Full validation methods and helper functions - Proper decimal scaling (18 decimals internal representation) Parser Interface (pkg/parsers/): - Parser interface for protocol-specific implementations - Factory interface for routing and registration - Support for single log and full transaction parsing - SupportsLog() for dynamic protocol identification Cache Interface (pkg/cache/): - PoolCache interface with multi-index support - O(1) lookups by: address, token pair, protocol, liquidity - Add, Update, Remove, Count, Clear operations - Context-aware for cancellation support Validation Interface (pkg/validation/): - Validator interface for swap events and pools - ValidationRules with configurable thresholds - FilterValid() for batch validation - Zero address, zero amount, decimal precision checks Observability (pkg/observability/): - Logger interface with structured logging (slog) - Metrics interface with Prometheus integration - Performance tracking (parse latency, execution) - Business metrics (arbitrage opportunities, profit) Project Files: - go.mod: Module definition with ethereum and prometheus deps - README.md: Complete project overview and documentation Architecture Principles: - Interface-first design for testability - Single responsibility per interface - Dependency injection ready - Observable by default - 18 decimal internal representation Ready for Phase 1 implementation: - All interfaces defined - Error types established - Core types validated - Logging and metrics infrastructure ready Next: Implement protocol-specific parsers (P2-001 through P2-055) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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