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/opentracing/opentracing-go/ext/field.go

@@ -0,0 +1,17 @@
+package ext
+
+import (
+	"github.com/opentracing/opentracing-go"
+	"github.com/opentracing/opentracing-go/log"
+)
+
+// LogError sets the error=true tag on the Span and logs err as an "error" event.
+func LogError(span opentracing.Span, err error, fields ...log.Field) {
+	Error.Set(span, true)
+	ef := []log.Field{
+		log.Event("error"),
+		log.Error(err),
+	}
+	ef = append(ef, fields...)
+	span.LogFields(ef...)
+}