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/raulk/go-watchdog/log.go

@@ -0,0 +1,38 @@
+package watchdog
+
+import "log"
+
+// logger is an interface to be implemented by custom loggers.
+type logger interface {
+	Debugf(template string, args ...interface{})
+	Infof(template string, args ...interface{})
+	Warnf(template string, args ...interface{})
+	Errorf(template string, args ...interface{})
+}
+
+var _ logger = (*stdlog)(nil)
+
+// stdlog is a logger that proxies to a standard log.logger.
+type stdlog struct {
+	log   *log.Logger
+	debug bool
+}
+
+func (s *stdlog) Debugf(template string, args ...interface{}) {
+	if !s.debug {
+		return
+	}
+	s.log.Printf(template, args...)
+}
+
+func (s *stdlog) Infof(template string, args ...interface{}) {
+	s.log.Printf(template, args...)
+}
+
+func (s *stdlog) Warnf(template string, args ...interface{}) {
+	s.log.Printf(template, args...)
+}
+
+func (s *stdlog) Errorf(template string, args ...interface{}) {
+	s.log.Printf(template, args...)
+}