merge upstream main

backend/internal/handler/gateway_handler.go

@@ -596,7 +596,6 @@ func cloneAPIKeyWithGroup(apiKey *service.APIKey, group *service.Group) *service
 	cloned.Group = group
 	return &cloned
 }
-
 // Usage handles getting account balance and usage statistics for CC Switch integration
 // GET /v1/usage
 func (h *GatewayHandler) Usage(c *gin.Context) {
@@ -849,6 +848,9 @@ func (h *GatewayHandler) CountTokens(c *gin.Context) {
 		return
 	}
 
+	// 检查是否为 Claude Code 客户端，设置到 context 中
+	SetClaudeCodeClientContext(c, body)
+
 	setOpsRequestContext(c, "", false, body)
 
 	parsedReq, err := service.ParseGatewayRequest(body)