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/docker/go-units/circle.yml

@@ -0,0 +1,11 @@
+dependencies:
+  post:
+    # install golint
+    - go get golang.org/x/lint/golint
+
+test:
+  pre:
+    # run analysis before tests
+    - go vet ./...
+    - test -z "$(golint ./... | tee /dev/stderr)"
+    - test -z "$(gofmt -s -l . | tee /dev/stderr)"