Create temp directory if it doesn't exist before saving images and cache

app/lib/schedule.ts

@@ -1,4 +1,4 @@
-import { writeFileSync, existsSync, readFileSync } from "fs";
+import { writeFileSync, existsSync, readFileSync, mkdirSync } from "fs";
 import * as cheerio from "cheerio";
 
 const CACHE_FILE = "./temp/scheduleCache.json";
@@ -99,6 +99,11 @@ export async function getAllSchedules(
 
   const schedule = Object.assign({}, ...results);
 
+  // temp 폴더가 없으면 생성
+  if (!existsSync("./temp")) {
+    mkdirSync("./temp", { recursive: true });
+  }
+
   writeFileSync(CACHE_FILE, JSON.stringify(schedule, null, 2), "utf-8");
   console.log(`📦 캐시 저장됨 → ${CACHE_FILE}`);
   return schedule;