[as] refactor: loginService -> authService

apps/as/src/pages/auth/login/ui/login-page.tsx

@@ -3,7 +3,7 @@
 import { useState } from "react";
 import Image from "next/image";
 
-import { LoginApi } from "@/entities/auth";
+import { authService } from "@/entities/auth";
 import { images } from "@common/assets";
 
 import "./login.css";
@@ -20,7 +20,7 @@ function LoginPage() {
     const password = formData.get("password") as string;
 
     try {
-      await LoginApi.login({ userId, password });
+      await authService.login({ userId, password });
       window.location.href = "/";
     } catch (error) {
       const message = error instanceof Error ? error.message : "로그인에 실패했습니다.";