fix(logging): revert to slog.Logger for consistency

Reverted logging standardization that was causing compilation errors.
The codebase is already standardized on log/slog.Logger.

Changes:
- pkg/sequencer/reader.go: Reverted to *slog.Logger parameter
- pkg/sequencer/reader.go: Changed logger.New() to logger.With()
- pkg/sequencer/reader.go: Added loggerAdapter for internal use
- cmd/mev-bot-v2/main.go: Removed incompatible adapter code
- cmd/mev-bot-v2/main.go: Use slog.Logger directly

This fixes the Docker build failure while maintaining Prometheus metrics integration.

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

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

cmd/mev-bot-v2/main.go

@@ -25,7 +25,7 @@ import (
 )
 
 func main() {
-	// Initialize logger
+	// Initialize logger (slog)
 	logger := slog.New(slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{
 		Level: slog.LevelInfo,
 	}))
@@ -193,14 +193,14 @@ func main() {
 	}
 
 	// Initialize sequencer reader
-	seqConfig := &sequencer.ReaderConfig{
-		WSURL:              config.SequencerWSURL,
-		RPCURL:             config.RPCURL,
-		WorkerCount:        config.WorkerCount,
-		BufferSize:         config.BufferSize,
-		MinProfit:          config.MinProfit,
-		EnableFrontRunning: config.EnableFrontRunning,
-	}
+	seqConfig := sequencer.DefaultReaderConfig()
+	// Override defaults with app config
+	seqConfig.WSURL = config.SequencerWSURL
+	seqConfig.RPCURL = config.RPCURL
+	seqConfig.WorkerCount = config.WorkerCount
+	seqConfig.BufferSize = config.BufferSize
+	seqConfig.MinProfit = config.MinProfit
+	seqConfig.EnableFrontRunning = config.EnableFrontRunning
 	seqReader, err := sequencer.NewReader(seqConfig, parserFactory, validator, poolCache, detector, executor, logger)
 	if err != nil {
 		logger.Error("failed to initialize sequencer reader", "error", err)