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-pubsub/doc.go

@@ -0,0 +1,27 @@
+// The pubsub package provides facilities for the Publish/Subscribe pattern of message
+// propagation, also known as overlay multicast.
+// The implementation provides topic-based pubsub, with pluggable routing algorithms.
+//
+// The main interface to the library is the PubSub object.
+// You can construct this object with the following constructors:
+//
+// - NewFloodSub creates an instance that uses the floodsub routing algorithm.
+//
+// - NewGossipSub creates an instance that uses the gossipsub routing algorithm.
+//
+// - NewRandomSub creates an instance that uses the randomsub routing algorithm.
+//
+// In addition, there is a generic constructor that creates a pubsub instance with
+// a custom PubSubRouter interface. This procedure is currently reserved for internal
+// use within the package.
+//
+// Once you have constructed a PubSub instance, you need to establish some connections
+// to your peers; the implementation relies on ambient peer discovery, leaving bootstrap
+// and active peer discovery up to the client.
+//
+// To publish a message to some topic, use Publish; you don't need to be subscribed
+// to the topic in order to publish.
+//
+// To subscribe to a topic, use Subscribe; this will give you a subscription interface
+// from which new messages can be pumped.
+package pubsub