refactor(service): 重构服务模块结构并优化模型配置

controller/stat_controller.go

@@ -2,9 +2,9 @@ package controller
 
 import (
 	"context"
+	statService "model-gateway/service/stat"
 
 	"model-gateway/model/dto"
-	"model-gateway/service"
 )
 
 type stat struct{}
@@ -14,5 +14,5 @@ var Stat = new(stat)
 
 // ListModelStat 统计列表
 func (c *stat) ListModelStat(ctx context.Context, req *dto.ListModelStatReq) (res *dto.ListModelStatRes, err error) {
-	return service.Stat.List(ctx, req)
+	return statService.Stat.List(ctx, req)
 }