fix: level range 1-100 everywhere (pair slider was 1-10)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/pages/GenerateIt.tsx

@@ -38,7 +38,7 @@ interface PairFormProps {
 }
 
 function PairForm({ objectId, token, onSaved, onCancel }: PairFormProps) {
-  const [level, setLevel] = useState(5)
+  const [level, setLevel] = useState(50)
   const [questionDe, setQuestionDe] = useState('')
   const [statementDe, setStatementDe] = useState('')
   const [words, setWords] = useState<PendingWord[]>([])
@@ -84,7 +84,7 @@ function PairForm({ objectId, token, onSaved, onCancel }: PairFormProps) {
           Level: <strong>{level}</strong>
         </label>
         <input
-          type="range" min={1} max={10} value={level}
+          type="range" min={1} max={100} value={level}
           onChange={e => setLevel(Number(e.target.value))}
           style={{ width: '100%' }}
         />