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/ipld/go-ipld-prime/datamodel/doc.go

@@ -0,0 +1,13 @@
+// The datamodel package defines the most essential interfaces for describing IPLD Data --
+// such as Node, NodePrototype, NodeBuilder, Link, and Path.
+//
+// Note that since interfaces in this package are the core of the library,
+// choices made here maximize correctness and performance -- these choices
+// are *not* always the choices that would maximize ergonomics.
+// (Ergonomics can come on top; performance generally can't.)
+// You'll want to check out other packages for functions with more ergonomics;
+// for example, 'fluent' and its subpackages provide lots of ways to work with data;
+// 'traversal' provides some ergonomic features for walking around data graphs;
+// any use of schemas will provide a bunch of useful data validation options;
+// or you can make your own function decorators that do what *you* need.
+package datamodel