From 48de08da399fb7e055976f111aed918865e503eb Mon Sep 17 00:00:00 2001
From: hyungi <hyun49196@gmail.com>
Date: Sun, 7 Jun 2026 15:38:48 +0900
Subject: [PATCH] =?UTF-8?q?fix(study):=20=EA=B2=80=EC=88=98=ED=95=A8=20eac?=
 =?UTF-8?q?h=5Fkey=5Fduplicate=20=ED=81=AC=EB=9E=98=EC=8B=9C=20=E2=80=94?=
 =?UTF-8?q?=20=EC=9E=90=EB=A3=8C(=EC=88=98=EB=8F=99)=20=EA=B7=B8=EB=A3=B9?=
 =?UTF-8?q?=20null=20=ED=82=A4=20=EC=A4=91=EB=B3=B5=20=ED=95=B4=EC=86=8C?=
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manual 카드 그룹은 source_question_id=null 이라 자료가 2개+ 면 {#each ... (g.source_question_id)} 키 중복 → Svelte each_key_duplicate 크래시. 키를 (source_question_id ?? question_text) 고유값으로 변경. 추가로 자료 그룹은 approve-batch 가 source_question_id:int 필수라 422 → 일괄승인 버튼을 question 그룹에만 노출. 개별 승인/수정/삭제는 cardId 기반이라 자료도 정상.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
---
 frontend/src/routes/study/cards-review/+page.svelte | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/frontend/src/routes/study/cards-review/+page.svelte b/frontend/src/routes/study/cards-review/+page.svelte
index 99565cb..55a8aaf 100644
--- a/frontend/src/routes/study/cards-review/+page.svelte
+++ b/frontend/src/routes/study/cards-review/+page.svelte
@@ -152,7 +152,7 @@
     <EmptyState title="검수할 카드가 없습니다" description="새 문제를 풀면 AI가 암기카드를 추출해 여기에 쌓입니다." icon={CheckCheck} />
   {:else}
     <div class="space-y-5">
-      {#each shownGroups as g (g.source_question_id)}
+      {#each shownGroups as g (g.source_question_id ?? g.question_text)}
         <div class="rounded-card border border-default bg-bg/40 p-3">
           <!-- 출처 문제 -->
           <div class="mb-3 flex items-start gap-2 rounded-lg border border-default bg-surface px-3 py-2">
@@ -162,7 +162,7 @@
               <div class="text-sm text-text">{g.question_text}</div>
               {#if g.correct_choice}<div class="mt-0.5 text-xs text-accent">사용자 정답: {g.correct_choice}번</div>{/if}
             </div>
-            {#if g.cards.length > 1}
+            {#if g.cards.length > 1 && g.source_question_id != null}
               <Button variant="secondary" size="sm" icon={CheckCheck} onclick={() => approveGroup(g.source_question_id, g.cards.length)}>{g.cards.length}장 승인</Button>
             {/if}
           </div>