diff --git a/src/hooks/ui/useSidebarState.ts b/src/hooks/ui/useSidebarState.ts
index ad1c938..3251b41 100644
--- a/src/hooks/ui/useSidebarState.ts
+++ b/src/hooks/ui/useSidebarState.ts
@@ -8,7 +8,7 @@ export interface UseSidebarStateReturn {
 }
 
 export function useSidebarState(): UseSidebarStateReturn {
-  const [sidebarOpen, setSidebarOpen] = useState(true)
+  const [sidebarOpen, setSidebarOpen] = useState(false)
   const [refreshKey, setRefreshKey] = useState(0)
 
   const bumpRefresh = useCallback(() => setRefreshKey((prev) => prev + 1), [])