fix: convert system message to user message for zhipu

controller/relay-zhipu.go

@@ -111,11 +111,22 @@ func getZhipuToken(apikey string) string {
 func requestOpenAI2Zhipu(request GeneralOpenAIRequest) *ZhipuRequest {
 	messages := make([]ZhipuMessage, 0, len(request.Messages))
 	for _, message := range request.Messages {
+		if message.Role == "system" {
+			messages = append(messages, ZhipuMessage{
+				Role:    "system",
+				Content: message.Content,
+			})
+			messages = append(messages, ZhipuMessage{
+				Role:    "user",
+				Content: "Okay",
+			})
+		} else {
 			messages = append(messages, ZhipuMessage{
 				Role:    message.Role,
 				Content: message.Content,
 			})
 		}
+	}
 	return &ZhipuRequest{
 		Prompt:      messages,
 		Temperature: request.Temperature,