cleanup code a bit

lib/src/screens/home_screen.dart

@@ -102,7 +102,7 @@ class _HomeScreenState extends State<HomeScreen> {
 
     final pickedType = choices[_random.nextInt(choices.length)];
     final readingsList = pickedType == 'onyomi' ? item.onyomi : item.kunyomi;
-    final hint = 'Select the ${pickedType == 'onyomi' ? "on\'yomi" : "kunyomi"}';
+    final hint = 'Select the ${pickedType == 'onyomi' ? "on'yomi" : "kunyomi"}';
 
     return _ReadingInfo(readingsList, hint);
   }

lib/src/screens/settings_screen.dart

@@ -26,11 +26,11 @@ class _SettingsScreenState extends State<SettingsScreen> {
     final repo = Provider.of<DeckRepository>(context, listen: false);
     await repo.setApiKey(apiKey);
 
-    ScaffoldMessenger.of(context).showSnackBar(
-      const SnackBar(content: Text('API key saved!')),
-    );
-
     if (mounted) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        const SnackBar(content: Text('API key saved!')),
+      );
+
       Navigator.of(context).pushReplacement(
         MaterialPageRoute(builder: (_) => const HomeScreen()),
       );

lib/src/services/distractor_generator.dart

@@ -32,7 +32,9 @@ class DistractorGenerator {
       if (c.toLowerCase() == correctMeaning.toLowerCase()) continue;
       out.add(_toTitleCase(c));
     }
-    while (out.length < needed) out.add('(no more)');
+    while (out.length < needed) {
+      out.add('(no more)');
+    }
     return out;
   }
 
@@ -44,7 +46,9 @@ class DistractorGenerator {
       if (out.length >= needed) break;
       out.add(o);
     }
-    while (out.length < needed) out.add('—');
+    while (out.length < needed) {
+      out.add('—');
+    }
     return out;
   }
 
@@ -61,7 +65,9 @@ class DistractorGenerator {
       if (out.length >= needed) break;
       out.add(r);
     }
-    while (out.length < needed) out.add('—');
+    while (out.length < needed) {
+      out.add('—');
+    }
     return out;
   }
 }