refactor: enhance AI workflow management with restore version and usage tracking features

internal/pkg/dto/request/ai_workflow_request.go

@@ -29,3 +29,8 @@ type PublishAIWorkflowRequest struct {
 type AIWorkflowVersionListRequest struct {
 	WorkflowID int64 `json:"workflowId"`
 }
+
+type RestoreAIWorkflowVersionRequest struct {
+	WorkflowID        int64 `json:"workflowId"`
+	WorkflowVersionID int64 `json:"workflowVersionId"`
+}

internal/pkg/dto/response/ai_workflow_response.go

@@ -47,6 +47,14 @@ type AIWorkflowTemplateResponse struct {
 	Definition  dsl.Definition `json:"definition"`
 }
 
+type AIWorkflowUsageResponse struct {
+	AIAgentID         int64  `json:"aiAgentId"`
+	AIAgentName       string `json:"aiAgentName"`
+	WorkflowVersionID int64  `json:"workflowVersionId"`
+	WorkflowVersion   int    `json:"workflowVersion"`
+	Enabled           bool   `json:"enabled"`
+}
+
 type AIWorkflowNodeSpecResponse struct {
 	Type                            string                          `json:"type"`
 	Title                           string                          `json:"title"`