Fix voice picker scroll - add maxHeight and nestedScrollEnabled

ScrollView now properly scrolls through all 35+ voices

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

app/(tabs)/voice.tsx

@@ -909,7 +909,12 @@ Based on this data, please answer the following question: ${question}`;
                 </TouchableOpacity>
               </View>
 
-              <ScrollView style={styles.voiceList}>
+              <ScrollView
+                style={styles.voiceList}
+                nestedScrollEnabled={true}
+                showsVerticalScrollIndicator={true}
+                contentContainerStyle={{ paddingBottom: 20 }}
+              >
                 {/* English Voices Section */}
                 <Text style={styles.voiceSectionTitle}>English Voices</Text>
                 {AVAILABLE_VOICES.filter(v => v.language.startsWith('en-')).map(voice => (
@@ -1390,6 +1395,7 @@ const styles = StyleSheet.create({
   },
   voiceList: {
     flex: 1,
+    maxHeight: 400,
     padding: Spacing.sm,
   },
   voiceSectionTitle: {