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>

reports/simulation/latest/summary.json

@@ -0,0 +1,58 @@
+{
+  "generated_at": "2025-10-14T04:22:11Z",
+  "vector_path": "/home/administrator/projects/mev-beta/tools/simulation/vectors/default.json",
+  "network": "arbitrum-one",
+  "window": "2024-09-15T00:00:00Z/2024-09-15T01:00:00Z",
+  "sources": [
+    "uniswap-v3",
+    "camelot",
+    "sushiswap"
+  ],
+  "attempts": 5,
+  "executed": 4,
+  "conversion_rate": 0.8,
+  "successful": 3,
+  "failed": 1,
+  "hit_rate": 0.75,
+  "gross_profit_eth": "0.101000",
+  "gas_cost_eth": "0.013700",
+  "net_profit_eth": "0.087300",
+  "average_profit_per_trade_eth": "0.021825",
+  "average_gas_cost_eth": "0.003425",
+  "profit_factor": 6.372262773722627,
+  "exchange_breakdown": [
+    {
+      "exchange": "camelot",
+      "executed": 2,
+      "successful": 1,
+      "hit_rate": 0.5,
+      "gross_profit_eth": "0.012000",
+      "net_profit_eth": "0.006100",
+      "gas_cost_eth": "0.005900"
+    },
+    {
+      "exchange": "sushiswap",
+      "executed": 1,
+      "successful": 1,
+      "hit_rate": 1,
+      "gross_profit_eth": "0.049200",
+      "net_profit_eth": "0.044500",
+      "gas_cost_eth": "0.004700"
+    },
+    {
+      "exchange": "uniswap-v3",
+      "executed": 1,
+      "successful": 1,
+      "hit_rate": 1,
+      "gross_profit_eth": "0.039800",
+      "net_profit_eth": "0.036700",
+      "gas_cost_eth": "0.003100"
+    }
+  ],
+  "skip_reasons": [
+    {
+      "reason": "below_min_profit",
+      "count": 1
+    }
+  ]
+}

reports/simulation/latest/summary.md

@@ -0,0 +1,31 @@
+# Profitability Simulation Report
+
+- Generated at: 2025-10-14T04:22:11Z
+- Vector source: `/home/administrator/projects/mev-beta/tools/simulation/vectors/default.json`
+- Network: **arbitrum-one**
+- Window: 2024-09-15T00:00:00Z/2024-09-15T01:00:00Z
+- Exchanges: uniswap-v3, camelot, sushiswap
+
+## Summary
+
+- Opportunities analysed: **5**
+- Executed: **4** (conversion 80.0%)
+- Successes: **3** / 4 (hit rate 75.0%)
+- Gross profit: **0.101000 ETH**
+- Gas spent: **0.013700 ETH**
+- Net profit after gas: **0.087300 ETH**
+- Avg profit per trade: **0.021825 ETH**
+- Avg gas cost per trade: **0.003425 ETH**
+- Profit factor (net/gas): **6.37**
+
+## Exchange Breakdown
+
+| Exchange | Executed | Success | Hit Rate | Gross Profit (ETH) | Gas (ETH) | Net Profit (ETH) |
+| --- | ---:| ---:| ---:| ---:| ---:| ---:|
+| camelot | 2 | 1 | 50.0% | 0.012000 | 0.005900 | 0.006100 |
+| sushiswap | 1 | 1 | 100.0% | 0.049200 | 0.004700 | 0.044500 |
+| uniswap-v3 | 1 | 1 | 100.0% | 0.039800 | 0.003100 | 0.036700 |
+
+## Skip Reasons
+
+- below_min_profit: 1