fix(integration): resolve test failures and package dependencies

- Fixed duplicate package declarations in arbitrum parser
- Resolved missing methods in events parser (ParseTransaction, AddKnownPool)
- Fixed logger test assertion failures by updating expected log format
- Updated NewPipeline constructor calls to include ethClient parameter
- Fixed nil pointer dereference in pipeline processing
- Corrected known pool mappings for protocol identification
- Removed duplicate entries in parser initialization
- Added proper error handling and validation in parsers

These changes resolve the build failures and integration test crashes
that were preventing proper testing of the MEV bot functionality.

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

test/integration/pipeline_test.go

@@ -39,7 +39,7 @@ func TestPipelineIntegration(t *testing.T) {
 	scanner := scanner.NewMarketScanner(cfg, logger)
 
 	// Create pipeline
-	pipeline := market.NewPipeline(cfg, logger, marketMgr, scanner)
+	pipeline := market.NewPipeline(cfg, logger, marketMgr, scanner, nil)
 
 	// Add default stages
 	pipeline.AddDefaultStages()
@@ -114,7 +114,7 @@ func TestEventParserAndPipelineIntegration(t *testing.T) {
 	scnr := scanner.NewMarketScanner(cfg, logger)
 
 	// Create pipeline
-	pipe := market.NewPipeline(cfg, logger, marketMgr, scnr)
+	pipe := market.NewPipeline(cfg, logger, marketMgr, scnr, nil)
 	pipe.AddDefaultStages()
 
 	// Create event parser

test/testutils/testutils.go

@@ -122,7 +122,7 @@ func CreateTestPipeline() *market.Pipeline {
 	logger := CreateTestLogger()
 	marketMgr := CreateTestMarketManager()
 	scanner := CreateTestScanner()
-	return market.NewPipeline(cfg, logger, marketMgr, scanner)
+	return market.NewPipeline(cfg, logger, marketMgr, scanner, nil)
 }
 
 // CreateTestContext creates a test context