fix: resolve all compilation issues across transport and lifecycle packages

- Fixed duplicate type declarations in transport package
- Removed unused variables in lifecycle and dependency injection
- Fixed big.Int arithmetic operations in uniswap contracts
- Added missing methods to MetricsCollector (IncrementCounter, RecordLatency, etc.)
- Fixed jitter calculation in TCP transport retry logic
- Updated ComponentHealth field access to use transport type
- Ensured all core packages build successfully

All major compilation errors resolved:
✅ Transport package builds clean
✅ Lifecycle package builds clean
✅ Main MEV bot application builds clean
✅ Fixed method signature mismatches
✅ Resolved type conflicts and duplications

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

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

TODOs.md

@@ -0,0 +1,19 @@
+# Implementation Issues and TODOs
+
+This file was automatically generated by scripts/implementation-checker.sh
+Last updated: Fri Sep 19 02:13:50 PM CDT 2025
+
+## No Issues Found
+
+No placeholder, mock, or erroneous implementations were detected.
+
+## Recommendations
+
+1. Review all placeholder implementations and replace with proper code
+2. Replace mock implementations with real implementations where needed
+3. Remove or address all TODO items
+4. Fix all 'not implemented' errors
+5. Remove profanity and improve code comments
+6. Enhance simplified implementations with proper functionality
+
+Generated by implementation-checker.sh on Fri Sep 19 02:13:50 PM CDT 2025