fix(multicall): resolve critical multicall parsing corruption issues

- Added comprehensive bounds checking to prevent buffer overruns in multicall parsing
- Implemented graduated validation system (Strict/Moderate/Permissive) to reduce false positives
- Added LRU caching system for address validation with 10-minute TTL
- Enhanced ABI decoder with missing Universal Router and Arbitrum-specific DEX signatures
- Fixed duplicate function declarations and import conflicts across multiple files
- Added error recovery mechanisms with multiple fallback strategies
- Updated tests to handle new validation behavior for suspicious addresses
- Fixed parser test expectations for improved validation system
- Applied gofmt formatting fixes to ensure code style compliance
- Fixed mutex copying issues in monitoring package by introducing MetricsSnapshot
- Resolved critical security vulnerabilities in heuristic address extraction
- Progress: Updated TODO audit from 10% to 35% complete

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

docs/master-plan/12-summary-roadmap.md

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+# MEV Bot Master Plan Summary & Roadmap
+
+## Project Summary
+
+This master plan outlines the comprehensive implementation of exchange-specific helper libraries for the MEV bot. The project encompasses support for multiple DEX protocols including Uniswap, SushiSwap, Curve, Balancer, PancakeSwap, and DEX aggregators, with advanced cross-exchange arbitrage capabilities.
+
+## Project Scope
+
+### Core Components
+1. Common interface definitions for all exchanges
+2. Exchange-specific implementation modules
+3. Cross-exchange arbitrage detection
+4. Pricing and liquidity management
+5. Testing and deployment infrastructure
+
+### Supported Exchanges
+- Uniswap (V2/V3)
+- SushiSwap
+- Curve Finance
+- Balancer
+- PancakeSwap
+- DEX Aggregators (1inch, ParaSwap, etc.)
+
+## Implementation Roadmap
+
+### Phase 1: Foundation (Weeks 1-2)
+- [x] Define common interfaces
+- [x] Set up project structure in `docs/master-plan/`
+- [x] Create core documentation
+- [ ] Implement base exchange module
+
+### Phase 2: Core Exchange Support (Weeks 3-6)
+- [x] Implement Uniswap V2/V3/V4 modules
+- [x] Implement SushiSwap module
+- [x] Basic Curve integration
+- [x] Unit tests for core exchanges
+
+### Phase 3: Advanced Exchanges (Weeks 7-9)
+- [x] Implement Balancer module
+- [x] Implement PancakeSwap module
+- [x] Implement Kyber module
+- [x] DEX aggregator integration
+- [x] Cross-chain functionality
+
+### Phase 4: Arbitrage & Optimization (Weeks 10-12)
+- [ ] Cross-exchange arbitrage implementation
+- [ ] Performance optimization
+- [ ] Security hardening
+- [ ] Documentation completion
+
+### Phase 5: Deployment & Operations (Weeks 13-14)
+- [ ] Staging deployment
+- [ ] Production deployment
+- [ ] Monitoring setup
+- [ ] Final testing and validation
+
+## Success Criteria
+
+### Technical Metrics
+- Consistent API across all exchange modules
+- Sub-100ms response time for price queries
+- >=90% test coverage for core functionality
+- Successful execution of swaps and liquidity operations
+- Accurate profitability calculations including gas costs
+
+### Business Metrics
+- Successful identification of arbitrage opportunities
+- Profitable execution of MEV strategies
+- Minimal transaction failures
+- Efficient gas utilization
+- Scalable architecture supporting multiple chains
+
+## Risk Assessment
+
+### High Priority Risks
+- Smart contract changes breaking compatibility
+- Security vulnerabilities in exchange contracts
+- Gas price volatility affecting profitability
+- Front-running reducing profits
+
+### Mitigation Strategies
+- Comprehensive testing with mainnet forks
+- Regular contract verification
+- Multiple gas pricing strategies
+- Advanced transaction ordering techniques
+
+## Resource Requirements
+
+### Development Team
+- 2-3 Go developers experienced with blockchain
+- 1 DevOps engineer for deployment infrastructure
+- 1 Security specialist for code audits
+
+### Infrastructure
+- Ethereum node access
+- Multiple blockchain API keys
+- Testnet and mainnet deployment environments
+- Monitoring and alerting infrastructure
+
+## Quality Assurance
+
+### Code Quality
+- All code follows Go best practices
+- Comprehensive unit and integration tests
+- Security audits before production deployment
+- Peer review for all pull requests
+
+### Performance Requirements
+- Support for high-frequency trading strategies
+- Efficient caching of exchange state
+- Optimized routing algorithms
+- Minimal external dependency calls
+
+## Conclusion
+
+This master plan provides a comprehensive roadmap for implementing the exchange-specific helper libraries required for the MEV bot. The modular approach ensures scalability and maintainability while the focus on testing and monitoring ensures reliability in production environments.