fix: resolve frontend lint issues

frontend/src/pages/Admin.jsx

@@ -56,7 +56,7 @@ export default function Admin() {
         if (!handleAuthError(e)) setError(e.message)
       })
       .finally(() => setLoading(false))
-  }, [])
+    }, [handleAuthError])
 
   const handleDraw = async () => {
     setShowConfirm(false)
@@ -94,7 +94,7 @@ export default function Admin() {
     const csv = [header, ...rows]
       .map((row) => row.map((cell) => `"${String(cell).replace(/"/g, '""')}"`).join(';'))
       .join('\n')
-    const blob = new Blob([`${csv}`], { type: 'text/csv;charset=utf-8;' })
+    const blob = new Blob(['\uFEFF' + csv], { type: 'text/csv;charset=utf-8;' })
     const url = URL.createObjectURL(blob)
     const link = document.createElement('a')
     link.href = url