From a44d360cbcf068f2e7612af80b28fee9824c74b0 Mon Sep 17 00:00:00 2001
From: Benjamin Admin <benjaminadmin@MacBook-Pro.local>
Date: Wed, 29 Apr 2026 16:04:43 +0200
Subject: [PATCH] Fix useRef initial value for React 19 compatibility

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---
 studio-v2/app/vocabulary/components/UnitBuilder.tsx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/studio-v2/app/vocabulary/components/UnitBuilder.tsx b/studio-v2/app/vocabulary/components/UnitBuilder.tsx
index 6fc5ee3..379340c 100644
--- a/studio-v2/app/vocabulary/components/UnitBuilder.tsx
+++ b/studio-v2/app/vocabulary/components/UnitBuilder.tsx
@@ -58,7 +58,7 @@ export default function UnitBuilder({
   const [manualTarget, setManualTarget] = useState('')
   const [suggestions, setSuggestions] = useState<{ source_text: string; target_text: string; pos?: string }[]>([])
   const [isLookingUp, setIsLookingUp] = useState(false)
-  const debounceRef = useRef<ReturnType<typeof setTimeout>>()
+  const debounceRef = useRef<ReturnType<typeof setTimeout>>(null)
 
   // Auto-suggest translation when typing in source field
   useEffect(() => {