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>

test/enhanced_profit_test.go

@@ -16,7 +16,7 @@ func TestEnhancedProfitCalculationAndRanking(t *testing.T) {
 	log := logger.New("debug", "text", "")
 
 	// Create profit calculator and ranker
-	calc := profitcalc.NewSimpleProfitCalculator(log)
+	calc := profitcalc.NewProfitCalculator(log)
 	ranker := profitcalc.NewOpportunityRanker(log)
 
 	// Test tokens
@@ -141,7 +141,7 @@ func TestOpportunityAging(t *testing.T) {
 	log := logger.New("debug", "text", "")
 
 	// Create profit calculator and ranker with short TTL for testing
-	calc := profitcalc.NewSimpleProfitCalculator(log)
+	calc := profitcalc.NewProfitCalculator(log)
 	ranker := profitcalc.NewOpportunityRanker(log)
 
 	// Create a test opportunity