From 620b4763b0331e5acf9784ce15318caa63c4facf Mon Sep 17 00:00:00 2001
From: nsfisis <nsfisis@gmail.com>
Date: Sun, 1 Feb 2026 12:10:19 +0900
Subject: feat(study): enable FSRS fuzz for due date variation

Prevent cards with similar intervals from always appearing on the same
day by enabling ts-fsrs built-in fuzz factor.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
---
 src/server/routes/study.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/server/routes/study.ts b/src/server/routes/study.ts
index 9c16699..d978a6a 100644
--- a/src/server/routes/study.ts
+++ b/src/server/routes/study.ts
@@ -33,7 +33,7 @@ const cardIdParamSchema = z.object({
 	cardId: z.uuid(),
 });
 
-const f = fsrs();
+const f = fsrs({ enable_fuzz: true });
 
 export function createStudyRouter(deps: StudyDependencies) {
 	const { cardRepo, deckRepo, reviewLogRepo } = deps;
-- 
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