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/cid/linksystem.go

@@ -0,0 +1,71 @@
+package cidlink
+
+import (
+	"fmt"
+	"hash"
+
+	"github.com/multiformats/go-multihash/core"
+
+	"github.com/ipld/go-ipld-prime/codec"
+	"github.com/ipld/go-ipld-prime/datamodel"
+	"github.com/ipld/go-ipld-prime/linking"
+	"github.com/ipld/go-ipld-prime/multicodec"
+)
+
+// DefaultLinkSystem returns a linking.LinkSystem which uses cidlink.Link for datamodel.Link.
+// During selection of encoders, decoders, and hashers, it examines the multicodec indicator numbers and multihash indicator numbers from the CID,
+// and uses the default global multicodec registry (see the go-ipld-prime/multicodec package) for resolving codec implementations,
+// and the default global multihash registry (see the go-multihash/core package) for resolving multihash implementations.
+//
+// No storage functions are present in the returned LinkSystem.
+// The caller can assign those themselves as desired.
+func DefaultLinkSystem() linking.LinkSystem {
+	return LinkSystemUsingMulticodecRegistry(multicodec.DefaultRegistry)
+}
+
+// LinkSystemUsingMulticodecRegistry is similar to DefaultLinkSystem, but accepts a multicodec.Registry as a parameter.
+//
+// This can help create a LinkSystem which uses different multicodec implementations than the global registry.
+// (Sometimes this can be desired if you want some parts of a program to support a more limited suite of codecs than other parts of the program,
+// or needed to use a different multicodec registry than the global one for synchronization purposes, or etc.)
+func LinkSystemUsingMulticodecRegistry(mcReg multicodec.Registry) linking.LinkSystem {
+	return linking.LinkSystem{
+		EncoderChooser: func(lp datamodel.LinkPrototype) (codec.Encoder, error) {
+			switch lp2 := lp.(type) {
+			case LinkPrototype:
+				fn, err := mcReg.LookupEncoder(lp2.GetCodec())
+				if err != nil {
+					return nil, err
+				}
+				return fn, nil
+			default:
+				return nil, fmt.Errorf("this encoderChooser can only handle cidlink.LinkPrototype; got %T", lp)
+			}
+		},
+		DecoderChooser: func(lnk datamodel.Link) (codec.Decoder, error) {
+			lp := lnk.Prototype()
+			switch lp2 := lp.(type) {
+			case LinkPrototype:
+				fn, err := mcReg.LookupDecoder(lp2.GetCodec())
+				if err != nil {
+					return nil, err
+				}
+				return fn, nil
+			default:
+				return nil, fmt.Errorf("this decoderChooser can only handle cidlink.LinkPrototype; got %T", lp)
+			}
+		},
+		HasherChooser: func(lp datamodel.LinkPrototype) (hash.Hash, error) {
+			switch lp2 := lp.(type) {
+			case LinkPrototype:
+				h, err := multihash.GetHasher(lp2.MhType)
+				if err != nil {
+					return nil, fmt.Errorf("no hasher registered for multihash indicator 0x%x: %w", lp2.MhType, err)
+				}
+				return h, nil
+			default:
+				return nil, fmt.Errorf("this hasherChooser can only handle cidlink.LinkPrototype; got %T", lp)
+			}
+		},
+	}
+}