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>

pkg/slurp/leader/doc.go

@@ -1,9 +1,9 @@
 // Package leader provides leader-specific context management duties for the SLURP system.
 //
-// This package implements the leader node responsibilities within the BZZZ cluster,
+// This package implements the leader node responsibilities within the CHORUS cluster,
 // where only the elected leader performs context generation, coordinates distributed
 // operations, and manages cluster-wide contextual intelligence tasks. It integrates
-// with the BZZZ election system to ensure consistent leadership and proper failover.
+// with the CHORUS election system to ensure consistent leadership and proper failover.
 //
 // Key Features:
 //   - Leader-only context generation to prevent conflicts and ensure consistency
@@ -66,7 +66,7 @@
 //	}
 //
 // Leader Election Integration:
-// The context manager automatically integrates with the BZZZ election system,
+// The context manager automatically integrates with the CHORUS election system,
 // responding to leadership changes, handling graceful transitions, and ensuring
 // no context generation operations are lost during failover events. State
 // transfer includes queued requests, active jobs, and coordination metadata.
@@ -105,7 +105,7 @@
 // - Conflict detection and resolution for concurrent changes
 //
 // Security Integration:
-// All leader operations integrate with the BZZZ security model:
+// All leader operations integrate with the CHORUS security model:
 // - Role-based authorization for context generation requests
 // - Encrypted communication between leader and cluster nodes
 // - Audit logging of all leadership decisions and actions