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/sashabaranov/go-openai/error.go

@@ -0,0 +1,115 @@
+package openai
+
+import (
+	"encoding/json"
+	"fmt"
+	"strings"
+)
+
+// APIError provides error information returned by the OpenAI API.
+// InnerError struct is only valid for Azure OpenAI Service.
+type APIError struct {
+	Code           any         `json:"code,omitempty"`
+	Message        string      `json:"message"`
+	Param          *string     `json:"param,omitempty"`
+	Type           string      `json:"type"`
+	HTTPStatus     string      `json:"-"`
+	HTTPStatusCode int         `json:"-"`
+	InnerError     *InnerError `json:"innererror,omitempty"`
+}
+
+// InnerError Azure Content filtering. Only valid for Azure OpenAI Service.
+type InnerError struct {
+	Code                 string               `json:"code,omitempty"`
+	ContentFilterResults ContentFilterResults `json:"content_filter_result,omitempty"`
+}
+
+// RequestError provides information about generic request errors.
+type RequestError struct {
+	HTTPStatus     string
+	HTTPStatusCode int
+	Err            error
+	Body           []byte
+}
+
+type ErrorResponse struct {
+	Error *APIError `json:"error,omitempty"`
+}
+
+func (e *APIError) Error() string {
+	if e.HTTPStatusCode > 0 {
+		return fmt.Sprintf("error, status code: %d, status: %s, message: %s", e.HTTPStatusCode, e.HTTPStatus, e.Message)
+	}
+
+	return e.Message
+}
+
+func (e *APIError) UnmarshalJSON(data []byte) (err error) {
+	var rawMap map[string]json.RawMessage
+	err = json.Unmarshal(data, &rawMap)
+	if err != nil {
+		return
+	}
+
+	err = json.Unmarshal(rawMap["message"], &e.Message)
+	if err != nil {
+		// If the parameter field of a function call is invalid as a JSON schema
+		// refs: https://github.com/sashabaranov/go-openai/issues/381
+		var messages []string
+		err = json.Unmarshal(rawMap["message"], &messages)
+		if err != nil {
+			return
+		}
+		e.Message = strings.Join(messages, ", ")
+	}
+
+	// optional fields for azure openai
+	// refs: https://github.com/sashabaranov/go-openai/issues/343
+	if _, ok := rawMap["type"]; ok {
+		err = json.Unmarshal(rawMap["type"], &e.Type)
+		if err != nil {
+			return
+		}
+	}
+
+	if _, ok := rawMap["innererror"]; ok {
+		err = json.Unmarshal(rawMap["innererror"], &e.InnerError)
+		if err != nil {
+			return
+		}
+	}
+
+	// optional fields
+	if _, ok := rawMap["param"]; ok {
+		err = json.Unmarshal(rawMap["param"], &e.Param)
+		if err != nil {
+			return
+		}
+	}
+
+	if _, ok := rawMap["code"]; !ok {
+		return nil
+	}
+
+	// if the api returned a number, we need to force an integer
+	// since the json package defaults to float64
+	var intCode int
+	err = json.Unmarshal(rawMap["code"], &intCode)
+	if err == nil {
+		e.Code = intCode
+		return nil
+	}
+
+	return json.Unmarshal(rawMap["code"], &e.Code)
+}
+
+func (e *RequestError) Error() string {
+	return fmt.Sprintf(
+		"error, status code: %d, status: %s, message: %s, body: %s",
+		e.HTTPStatusCode, e.HTTPStatus, e.Err, e.Body,
+	)
+}
+
+func (e *RequestError) Unwrap() error {
+	return e.Err
+}