Integrate BACKBEAT SDK and resolve KACHING license validation

Major integrations and fixes:
- Added BACKBEAT SDK integration for P2P operation timing
- Implemented beat-aware status tracking for distributed operations
- Added Docker secrets support for secure license management
- Resolved KACHING license validation via HTTPS/TLS
- Updated docker-compose configuration for clean stack deployment
- Disabled rollback policies to prevent deployment failures
- Added license credential storage (CHORUS-DEV-MULTI-001)

Technical improvements:
- BACKBEAT P2P operation tracking with phase management
- Enhanced configuration system with file-based secrets
- Improved error handling for license validation
- Clean separation of KACHING and CHORUS deployment stacks

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

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

vendor/github.com/libp2p/go-libp2p/p2p/metricshelper/pool.go

@@ -0,0 +1,26 @@
+package metricshelper
+
+import (
+	"fmt"
+	"sync"
+)
+
+const capacity = 8
+
+var stringPool = sync.Pool{New: func() any {
+	s := make([]string, 0, capacity)
+	return &s
+}}
+
+func GetStringSlice() *[]string {
+	s := stringPool.Get().(*[]string)
+	*s = (*s)[:0]
+	return s
+}
+
+func PutStringSlice(s *[]string) {
+	if c := cap(*s); c < capacity {
+		panic(fmt.Sprintf("expected a string slice with capacity 8 or greater, got %d", c))
+	}
+	stringPool.Put(s)
+}