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/ucxi/collaboration_integration_test.go

@@ -10,7 +10,7 @@ import (
 	"strings"
 	"testing"
 
-	"chorus.services/bzzz/pkg/ucxl"
+	"chorus/pkg/ucxl"
 )
 
 // Mock implementations for testing
@@ -174,7 +174,7 @@ func TestCollaborationInitiation(t *testing.T) {
 		"from_role":          "junior_developer",
 		"to_roles":           []string{"senior_developer", "tech_lead"},
 		"required_expertise": []string{"api_design", "error_handling"},
-		"project_id":         "bzzz",
+		"project_id":         "CHORUS",
 		"priority":           "medium",
 		"data": map[string]interface{}{
 			"context":           "Working on UCXI API standardization",