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/miekg/dns/COPYRIGHT

@@ -0,0 +1,9 @@
+Copyright 2009 The Go Authors. All rights reserved. Use of this source code
+is governed by a BSD-style license that can be found in the LICENSE file.
+Extensions of the original work are copyright (c) 2011 Miek Gieben
+
+Copyright 2011 Miek Gieben. All rights reserved. Use of this source code is
+governed by a BSD-style license that can be found in the LICENSE file.
+
+Copyright 2014 CloudFlare. All rights reserved. Use of this source code is
+governed by a BSD-style license that can be found in the LICENSE file.