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/crypto/age_crypto.go

@@ -1,6 +1,6 @@
-// Package crypto provides Age encryption implementation for role-based content security in BZZZ.
+// Package crypto provides Age encryption implementation for role-based content security in CHORUS.
 //
-// This package implements the cryptographic foundation for BZZZ Phase 2B, enabling:
+// This package implements the cryptographic foundation for CHORUS Phase 2B, enabling:
 // - Role-based content encryption using Age (https://age-encryption.org)
 // - Hierarchical access control based on agent authority levels
 // - Multi-recipient encryption for shared content
@@ -36,13 +36,13 @@ import (
 	"strings"
 
 	"filippo.io/age"           // Modern, secure encryption library
-	"chorus.services/bzzz/pkg/config"
+	"chorus/pkg/config"
 )
 
 // AgeCrypto handles Age encryption for role-based content security.
 //
 // This is the primary interface for encrypting and decrypting UCXL content
-// based on BZZZ role hierarchies. It provides methods to:
+// based on CHORUS role hierarchies. It provides methods to:
 // - Encrypt content for specific roles or multiple roles
 // - Decrypt content using the current agent's role key
 // - Validate Age key formats and generate new key pairs
@@ -55,13 +55,13 @@ import (
 //
 // Thread Safety: AgeCrypto is safe for concurrent use across goroutines.
 type AgeCrypto struct {
-	config *config.Config // BZZZ configuration containing role definitions
+	config *config.Config // CHORUS configuration containing role definitions
 }
 
 // NewAgeCrypto creates a new Age crypto handler for role-based encryption.
 //
 // Parameters:
-//   cfg: BZZZ configuration containing role definitions and agent settings
+//   cfg: CHORUS configuration containing role definitions and agent settings
 //
 // Returns:
 //   *AgeCrypto: Configured crypto handler ready for encryption/decryption
@@ -81,7 +81,7 @@ func NewAgeCrypto(cfg *config.Config) *AgeCrypto {
 // GenerateAgeKeyPair generates a new Age X25519 key pair for role-based encryption.
 //
 // This function creates cryptographically secure Age key pairs suitable for
-// role-based content encryption. Each role in BZZZ should have its own key pair
+// role-based content encryption. Each role in CHORUS should have its own key pair
 // to enable proper access control and content segmentation.
 //
 // Returns: