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/libp2p/go-libp2p-kad-dht/internal/ctx_mutex.go

@@ -0,0 +1,28 @@
+package internal
+
+import (
+	"context"
+)
+
+type CtxMutex chan struct{}
+
+func NewCtxMutex() CtxMutex {
+	return make(CtxMutex, 1)
+}
+
+func (m CtxMutex) Lock(ctx context.Context) error {
+	select {
+	case m <- struct{}{}:
+		return nil
+	case <-ctx.Done():
+		return ctx.Err()
+	}
+}
+
+func (m CtxMutex) Unlock() {
+	select {
+	case <-m:
+	default:
+		panic("not locked")
+	}
+}