feat: support amazon nova

relay/channel/aws/adaptor.go

@@ -60,7 +60,16 @@ func (a *Adaptor) ConvertOpenAIRequest(c *gin.Context, info *relaycommon.RelayIn
 	if request == nil {
 		return nil, errors.New("request is nil")
 	}
+	// 检查是否为Nova模型
+	if isNovaModel(request.Model) {
+		novaReq := convertToNovaRequest(request)
+		c.Set("request_model", request.Model)
+		c.Set("converted_request", novaReq)
+		c.Set("is_nova_model", true)
+		return novaReq, nil
+	}
 
+	// 原有的Claude模型处理逻辑
 	var claudeReq *dto.ClaudeRequest
 	var err error
 	claudeReq, err = claude.RequestOpenAI2ClaudeMessage(c, *request)
@@ -69,6 +78,7 @@ func (a *Adaptor) ConvertOpenAIRequest(c *gin.Context, info *relaycommon.RelayIn
 	}
 	c.Set("request_model", claudeReq.Model)
 	c.Set("converted_request", claudeReq)
+	c.Set("is_nova_model", false)
 	return claudeReq, err
 }