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>

pkg/dht/dht_test.go

@@ -15,8 +15,8 @@ import (
 func TestDefaultConfig(t *testing.T) {
 	config := DefaultConfig()
 	
-	if config.ProtocolPrefix != "/bzzz" {
-		t.Errorf("expected protocol prefix '/bzzz', got %s", config.ProtocolPrefix)
+	if config.ProtocolPrefix != "/CHORUS" {
+		t.Errorf("expected protocol prefix '/CHORUS', got %s", config.ProtocolPrefix)
 	}
 	
 	if config.BootstrapTimeout != 30*time.Second {
@@ -53,8 +53,8 @@ func TestNewDHT(t *testing.T) {
 		t.Error("host not set correctly")
 	}
 	
-	if d.config.ProtocolPrefix != "/bzzz" {
-		t.Errorf("expected protocol prefix '/bzzz', got %s", d.config.ProtocolPrefix)
+	if d.config.ProtocolPrefix != "/CHORUS" {
+		t.Errorf("expected protocol prefix '/CHORUS', got %s", d.config.ProtocolPrefix)
 	}
 }