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-kad-dht/internal/tracing.go

@@ -0,0 +1,32 @@
+package internal
+
+import (
+	"context"
+	"fmt"
+	"unicode/utf8"
+
+	"github.com/multiformats/go-multibase"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/attribute"
+	"go.opentelemetry.io/otel/trace"
+)
+
+func StartSpan(ctx context.Context, name string, opts ...trace.SpanStartOption) (context.Context, trace.Span) {
+	return otel.Tracer("go-libp2p-kad-dht").Start(ctx, fmt.Sprintf("KademliaDHT.%s", name), opts...)
+}
+
+// KeyAsAttribute format a DHT key into a suitable tracing attribute.
+// DHT keys can be either valid utf-8 or binary, when they are derived from, for example, a multihash.
+// Tracing (and notably OpenTelemetry+grpc exporter) requires valid utf-8 for string attributes.
+func KeyAsAttribute(name string, key string) attribute.KeyValue {
+	b := []byte(key)
+	if utf8.Valid(b) {
+		return attribute.String(name, key)
+	}
+	encoded, err := multibase.Encode(multibase.Base58BTC, b)
+	if err != nil {
+		// should be unreachable
+		panic(err)
+	}
+	return attribute.String(name, encoded)
+}