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>

pkg/scanner/concurrent.go

@@ -45,7 +45,7 @@ type MarketScanner struct {
 	contractExecutor  *contracts.ContractExecutor
 	create2Calculator *pools.CREATE2Calculator
 	database          *database.Database
-	profitCalculator  *profitcalc.SimpleProfitCalculator
+	profitCalculator  *profitcalc.ProfitCalculator
 	opportunityRanker *profitcalc.OpportunityRanker
 	marketDataLogger  *marketdata.MarketDataLogger // Enhanced market data logging system
 }
@@ -80,7 +80,7 @@ func NewMarketScanner(cfg *config.BotConfig, logger *logger.Logger, contractExec
 		contractExecutor:  contractExecutor,
 		create2Calculator: pools.NewCREATE2Calculator(logger, contractExecutor.GetClient()),
 		database:          db,
-		profitCalculator:  profitcalc.NewSimpleProfitCalculatorWithClient(logger, contractExecutor.GetClient()),
+		profitCalculator:  profitcalc.NewProfitCalculatorWithClient(logger, contractExecutor.GetClient()),
 		opportunityRanker: profitcalc.NewOpportunityRanker(logger),
 		marketDataLogger:  marketdata.NewMarketDataLogger(logger, db), // Initialize market data logger
 	}