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/ipfs/go-log/metadata.go

@@ -0,0 +1,77 @@
+package log
+
+import (
+	"encoding/json"
+	"errors"
+	"reflect"
+)
+
+// Metadata is a convenience type for generic maps
+type Metadata map[string]interface{}
+
+// DeepMerge merges the second Metadata parameter into the first.
+// Nested Metadata are merged recursively. Primitives are over-written.
+func DeepMerge(b, a Metadata) Metadata {
+	out := Metadata{}
+	for k, v := range b {
+		out[k] = v
+	}
+	for k, v := range a {
+
+		maybe, err := Metadatify(v)
+		if err != nil {
+			// if the new value is not meta. just overwrite the dest vaue
+			if out[k] != nil {
+				log.Debugf("Overwriting key: %s, old: %s, new: %s", k, out[k], v)
+			}
+			out[k] = v
+			continue
+		}
+
+		// it is meta. What about dest?
+		outv, exists := out[k]
+		if !exists {
+			// the new value is meta, but there's no dest value. just write it
+			out[k] = v
+			continue
+		}
+
+		outMetadataValue, err := Metadatify(outv)
+		if err != nil {
+			// the new value is meta and there's a dest value, but the dest
+			// value isn't meta. just overwrite
+			out[k] = v
+			continue
+		}
+
+		// both are meta. merge them.
+		out[k] = DeepMerge(outMetadataValue, maybe)
+	}
+	return out
+}
+
+// Loggable implements the Loggable interface.
+func (m Metadata) Loggable() map[string]interface{} {
+	// NB: method defined on value to avoid de-referencing nil Metadata
+	return m
+}
+
+// JsonString returns the marshaled JSON string for the metadata.
+func (m Metadata) JsonString() (string, error) {
+	// NB: method defined on value
+	b, err := json.Marshal(m)
+	return string(b), err
+}
+
+// Metadatify converts maps into Metadata.
+func Metadatify(i interface{}) (Metadata, error) {
+	value := reflect.ValueOf(i)
+	if value.Kind() == reflect.Map {
+		m := map[string]interface{}{}
+		for _, k := range value.MapKeys() {
+			m[k.String()] = value.MapIndex(k).Interface()
+		}
+		return Metadata(m), nil
+	}
+	return nil, errors.New("is not a map")
+}