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/linking/errors.go

@@ -0,0 +1,30 @@
+package linking
+
+import (
+	"fmt"
+
+	"github.com/ipld/go-ipld-prime/datamodel"
+)
+
+// ErrLinkingSetup is returned by methods on LinkSystem when some part of the system is not set up correctly,
+// or when one of the components refuses to handle a Link or LinkPrototype given.
+// (It is not yielded for errors from the storage nor codec systems once they've started; those errors rise without interference.)
+type ErrLinkingSetup struct {
+	Detail string // Perhaps an enum here as well, which states which internal function was to blame?
+	Cause  error
+}
+
+func (e ErrLinkingSetup) Error() string { return fmt.Sprintf("%s: %v", e.Detail, e.Cause) }
+func (e ErrLinkingSetup) Unwrap() error { return e.Cause }
+
+// ErrHashMismatch is the error returned when loading data and verifying its hash
+// and finding that the loaded data doesn't re-hash to the expected value.
+// It is typically seen returned by functions like LinkSystem.Load or LinkSystem.Fill.
+type ErrHashMismatch struct {
+	Actual   datamodel.Link
+	Expected datamodel.Link
+}
+
+func (e ErrHashMismatch) Error() string {
+	return fmt.Sprintf("hash mismatch!  %v (actual) != %v (expected)", e.Actual, e.Expected)
+}