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/8_reports/2024-10-05_release_readiness.md

@@ -0,0 +1,28 @@
+# Release Readiness Report – 2024-10-05
+
+## Commands Executed
+- `./scripts/run_audit_suite.sh`
+- `make simulate-profit`
+- `GOCACHE=$(pwd)/.gocache go build ./cmd/mev-bot`
+- `timeout 5s ./mev-bot start` (with `MEV_BOT_ENCRYPTION_KEY=test_key_32_chars_minimum_length`)
+
+## Math Audit
+- **Vectors:** default (tools/math-audit)
+- **Result:** 7/7 vectors passed, 7/7 assertions passed, 4/4 property checks succeeded
+- **Artifacts:** `reports/math/latest/report.json`, `reports/math/latest/report.md`
+
+## Profitability Simulation
+- **Vectors:** tools/simulation/vectors/default.json
+- **Attempts:** 5 opportunities (4 executed, 3 profitable)
+- **Net Profit:** 0.087300 ETH after gas
+- **Profit Factor:** 6.37
+- **Artifacts:** `reports/simulation/latest/summary.json`, `reports/simulation/latest/summary.md`
+
+## Build & Runtime Smoke Test
+- `go build` succeeded (binary at `./mev-bot`).
+- Startup fails as expected without configured keystore (`invalid configuration: keystore path cannot be empty`). Supply a valid keystore path before production rollout.
+
+## Outstanding Items / Notes
+- Provide production keystore and secrets prior to final deployment.
+- Monitor Prometheus metrics (`mev_bot_net_profit_eth`, `mev_bot_trade_error_rate`, `mev_bot_processing_latency_ms`) during staging soak.
+- Attach math audit and simulation reports to the release change record.