코드 검토 및 문서 반영

app/api/maestros/[id]/upgrade-requests/route.ts

@@ -5,23 +5,15 @@ import { createUpgradeRequest } from "@/lib/upgrade-requests";
 import { ApiError } from "@/lib/errors";
 import { withApiHandler } from "@/lib/api-handler";
 import { logger } from "@/lib/logger";
-import { ACCOUNT_TYPES } from "@/lib/constants";
+import { PAID_ACCOUNT_TYPE_VALUES } from "@/lib/constants";
 
 const CTX = "maestros/[id]/upgrade-requests";
 
-const paidAccountTypeValues = [
-  ACCOUNT_TYPES.BASIC_20,
-  ACCOUNT_TYPES.STANDARD_50,
-  ACCOUNT_TYPES.PRO_100,
-  ACCOUNT_TYPES.SCHOOL_500,
-  ACCOUNT_TYPES.SCHOOL_1000,
-] as const;
-
 const postBodySchema = z.object({
   requestedAccountType: z.coerce
     .number()
     .int()
-    .refine((v) => (paidAccountTypeValues as readonly number[]).includes(v)),
+    .refine((v) => (PAID_ACCOUNT_TYPE_VALUES as readonly number[]).includes(v)),
 });
 
 export const POST = withApiHandler<{ id: string }>(