fix(multicall): resolve critical multicall parsing corruption issues

- Added comprehensive bounds checking to prevent buffer overruns in multicall parsing
- Implemented graduated validation system (Strict/Moderate/Permissive) to reduce false positives
- Added LRU caching system for address validation with 10-minute TTL
- Enhanced ABI decoder with missing Universal Router and Arbitrum-specific DEX signatures
- Fixed duplicate function declarations and import conflicts across multiple files
- Added error recovery mechanisms with multiple fallback strategies
- Updated tests to handle new validation behavior for suspicious addresses
- Fixed parser test expectations for improved validation system
- Applied gofmt formatting fixes to ensure code style compliance
- Fixed mutex copying issues in monitoring package by introducing MetricsSnapshot
- Resolved critical security vulnerabilities in heuristic address extraction
- Progress: Updated TODO audit from 10% to 35% complete

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

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

tools/audit-orchestrator/go.mod

@@ -0,0 +1,7 @@
+module github.com/fraktal/mev-beta/tools/audit-orchestrator
+
+go 1.24
+
+replace github.com/fraktal/mev-beta => ../../
+
+require github.com/fraktal/mev-beta v0.0.0-00010101000000-000000000000

tools/audit-orchestrator/main.go

@@ -0,0 +1,95 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"log"
+	"os"
+	"time"
+
+	"github.com/fraktal/mev-beta/tools/audit-orchestrator/internal"
+)
+
+func main() {
+	var (
+		mode            = flag.String("mode", "comprehensive", "Audit mode: quick, standard, comprehensive, continuous, custom")
+		configFile      = flag.String("config", "orchestrator-config.yaml", "Configuration file path")
+		outputDir       = flag.String("output", "reports/orchestrator", "Output directory")
+		verbose         = flag.Bool("verbose", false, "Enable verbose output")
+		dryRun          = flag.Bool("dry-run", false, "Perform dry run without executing audits")
+		parallel        = flag.Bool("parallel", true, "Run compatible audits in parallel")
+		timeout         = flag.Duration("timeout", 60*time.Minute, "Overall timeout for all audits")
+		reportFormat    = flag.String("format", "html", "Report format: html, json, pdf, all")
+		dashboardMode   = flag.Bool("dashboard", false, "Start interactive dashboard")
+		watchMode       = flag.Bool("watch", false, "Continuous monitoring mode")
+		webhookURL      = flag.String("webhook", "", "Webhook URL for notifications")
+		schedule        = flag.String("schedule", "", "Cron schedule for automatic runs")
+		baselineDir     = flag.String("baseline", "", "Baseline reports directory for comparison")
+		thresholds      = flag.String("thresholds", "", "Custom quality thresholds file")
+		environment     = flag.String("env", "development", "Environment: development, staging, production")
+		integrationMode = flag.Bool("integration", false, "Integration with external systems")
+		metricsExport   = flag.Bool("metrics", false, "Export metrics to external systems")
+	)
+	flag.Parse()
+
+	// Create output directory
+	if err := os.MkdirAll(*outputDir, 0755); err != nil {
+		log.Fatalf("Failed to create output directory: %v", err)
+	}
+
+	// Initialize audit orchestrator
+	orchestrator, err := internal.NewAuditOrchestrator(&internal.OrchestratorConfig{
+		Mode:            *mode,
+		ConfigFile:      *configFile,
+		OutputDir:       *outputDir,
+		Verbose:         *verbose,
+		DryRun:          *dryRun,
+		Parallel:        *parallel,
+		Timeout:         *timeout,
+		ReportFormat:    *reportFormat,
+		DashboardMode:   *dashboardMode,
+		WatchMode:       *watchMode,
+		WebhookURL:      *webhookURL,
+		Schedule:        *schedule,
+		BaselineDir:     *baselineDir,
+		Thresholds:      *thresholds,
+		Environment:     *environment,
+		IntegrationMode: *integrationMode,
+		MetricsExport:   *metricsExport,
+	})
+	if err != nil {
+		log.Fatalf("Failed to initialize audit orchestrator: %v", err)
+	}
+
+	ctx := context.Background()
+	ctx, cancel := context.WithTimeout(ctx, *timeout)
+	defer cancel()
+
+	if *dashboardMode {
+		fmt.Println("Starting audit orchestrator dashboard...")
+		if err := orchestrator.StartDashboard(ctx); err != nil {
+			log.Fatalf("Dashboard failed: %v", err)
+		}
+		return
+	}
+
+	if *watchMode {
+		fmt.Println("Starting continuous monitoring mode...")
+		if err := orchestrator.StartContinuousMonitoring(ctx); err != nil {
+			log.Fatalf("Continuous monitoring failed: %v", err)
+		}
+		return
+	}
+
+	fmt.Printf("Starting audit orchestration in %s mode...\n", *mode)
+	exitCode, err := orchestrator.RunOrchestration(ctx)
+	if err != nil {
+		log.Fatalf("Audit orchestration failed: %v", err)
+	}
+
+	fmt.Printf("Audit orchestration complete. Reports saved to: %s\n", *outputDir)
+	fmt.Printf("Exit code: %d\n", exitCode)
+
+	os.Exit(exitCode)
+}