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/nats-io/nats.go/go_test.mod

@@ -0,0 +1,23 @@
+module github.com/nats-io/nats.go
+
+go 1.19
+
+require (
+	github.com/golang/protobuf v1.4.2
+	github.com/klauspost/compress v1.17.8
+	github.com/nats-io/jwt v1.2.2
+	github.com/nats-io/nats-server/v2 v2.10.16
+	github.com/nats-io/nkeys v0.4.7
+	github.com/nats-io/nuid v1.0.1
+	go.uber.org/goleak v1.3.0
+	golang.org/x/text v0.15.0
+	google.golang.org/protobuf v1.23.0
+)
+
+require (
+	github.com/minio/highwayhash v1.0.2 // indirect
+	github.com/nats-io/jwt/v2 v2.5.7 // indirect
+	golang.org/x/crypto v0.23.0 // indirect
+	golang.org/x/sys v0.20.0 // indirect
+	golang.org/x/time v0.5.0 // indirect
+)