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>

pubsub/pubsub_test.go

@@ -7,7 +7,7 @@ import (
 // Note: This is a light test around name routing; full pubsub requires network.
 func TestPublishRaw_NameRouting_NoSubscription(t *testing.T) {
     // Build a minimal PubSub with names set but no subscriptions.
-    p := &PubSub{ bzzzTopicName: "bzzz/coordination/v1", hmmmTopicName: "hmmm/meta-discussion/v1", contextTopicName: "bzzz/context-feedback/v1" }
+    p := &PubSub{ bzzzTopicName: "CHORUS/coordination/v1", hmmmTopicName: "hmmm/meta-discussion/v1", contextTopicName: "CHORUS/context-feedback/v1" }
     if err := p.PublishRaw("nonexistent/topic", []byte("{}")); err == nil {
         t.Fatalf("expected error for unknown topic")
     }