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/gorilla/mux/Makefile

@@ -0,0 +1,34 @@
+GO_LINT=$(shell which golangci-lint 2> /dev/null || echo '')
+GO_LINT_URI=github.com/golangci/golangci-lint/cmd/golangci-lint@latest
+
+GO_SEC=$(shell which gosec 2> /dev/null || echo '')
+GO_SEC_URI=github.com/securego/gosec/v2/cmd/gosec@latest
+
+GO_VULNCHECK=$(shell which govulncheck 2> /dev/null || echo '')
+GO_VULNCHECK_URI=golang.org/x/vuln/cmd/govulncheck@latest
+
+.PHONY: golangci-lint
+golangci-lint:
+	$(if $(GO_LINT), ,go install $(GO_LINT_URI))
+	@echo "##### Running golangci-lint"
+	golangci-lint run -v
+	
+.PHONY: gosec
+gosec:
+	$(if $(GO_SEC), ,go install $(GO_SEC_URI))
+	@echo "##### Running gosec"
+	gosec ./...
+
+.PHONY: govulncheck
+govulncheck:
+	$(if $(GO_VULNCHECK), ,go install $(GO_VULNCHECK_URI))
+	@echo "##### Running govulncheck"
+	govulncheck ./...
+
+.PHONY: verify
+verify: golangci-lint gosec govulncheck
+
+.PHONY: test
+test:
+	@echo "##### Running tests"
+	go test -race -cover -coverprofile=coverage.coverprofile -covermode=atomic -v ./...