From 0de07e94f33edd2bb687983f65ed35e810ca693d Mon Sep 17 00:00:00 2001
From: Hyungi Ahn <hyungiahn@Hyungiui-MacBookPro.local>
Date: Mon, 27 Apr 2026 11:19:16 +0900
Subject: [PATCH] =?UTF-8?q?ops(study):=20=ED=8E=98=EC=9D=B4=EC=A7=80=20?=
 =?UTF-8?q?=ED=97=A4=EB=8D=94=EC=97=90=20build=20timestamp=20=EB=85=B8?=
 =?UTF-8?q?=EC=B6=9C=20(=EC=BA=90=EC=8B=9C=20=EA=B2=80=EC=A6=9D=EC=9A=A9)?=
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사용자가 새 코드로 보고 있는지 옛 캐시인지 즉시 확인 가능하도록
헤더 가운데 "build YYYY-MM-DD HH:MM" 작게 표시.
---
 frontend/src/routes/study/write/[id]/+page.svelte | 1 +
 frontend/vite.config.js                           | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/frontend/src/routes/study/write/[id]/+page.svelte b/frontend/src/routes/study/write/[id]/+page.svelte
index bc5934c..40538fd 100644
--- a/frontend/src/routes/study/write/[id]/+page.svelte
+++ b/frontend/src/routes/study/write/[id]/+page.svelte
@@ -192,6 +192,7 @@
         {sess.study_type === 'language' ? `${sess.language_code || '?'} · ${sess.learning_level || ''}` : (sess.certification || '자격증')}
         · {sess.subject || ''} · {sess.topic || ''}
       {/if}
+      <span class="ml-2 text-[10px] text-dim/60">build {__BUILD_TIME__}</span>
     </div>
 
     <button
diff --git a/frontend/vite.config.js b/frontend/vite.config.js
index 2c01dec..019c0a1 100644
--- a/frontend/vite.config.js
+++ b/frontend/vite.config.js
@@ -4,4 +4,9 @@ import { defineConfig } from 'vite';
 
 export default defineConfig({
   plugins: [tailwindcss(), sveltekit()],
+  // 빌드 시점 timestamp 를 코드에 inject — 페이지에 작게 노출해서 사용자가
+  // 옛 캐시를 보고 있는지 쉽게 확인 가능. 새 빌드마다 값 변경.
+  define: {
+    __BUILD_TIME__: JSON.stringify(new Date().toISOString().slice(0, 16).replace('T', ' ')),
+  },
 });