feat: 完善听力口语辅助状态记录、练习分块与复习抽查间隔机制

kouyu_english/lib/features/words/words_page.dart

@@ -179,7 +179,8 @@ class _WordsPageState extends State<WordsPage> {
                   ),
                   // The sentence is the point of the feedback: a gloss alone is
                   // what did not stick the first time.
-                  if (WordBank.instance.exampleOf(question.id) case final sample?) ...[
+                  if (WordBank.instance.exampleOf(question.id)
+                      case final sample?) ...[
                     Text(
                       sample.en,
                       style: TextStyle(
@@ -278,7 +279,8 @@ class _WordsPageState extends State<WordsPage> {
               tint: AppColors.warm,
               child: SpacedColumn(
                 children: [
-                  for (final id in shaky.take(8)) _WordRow(id: id, state: state),
+                  for (final id in shaky.take(8))
+                    _WordRow(id: id, state: state),
                 ],
               ),
             ),
@@ -334,7 +336,10 @@ class _WordRow extends StatelessWidget {
             children: [
               Text(
                 wordEnglish(id),
-                style: const TextStyle(fontSize: 16, fontWeight: FontWeight.w600),
+                style: const TextStyle(
+                  fontSize: 16,
+                  fontWeight: FontWeight.w600,
+                ),
               ),
               Text(
                 wordIpa(id).isEmpty
@@ -345,14 +350,11 @@ class _WordRow extends StatelessWidget {
             ],
           ),
         ),
-        Text(
-          switch (status) {
-            WordStatus.newWord => '新学',
-            WordStatus.recognized => '认识',
-            WordStatus.familiar => '熟悉',
-          },
-          style: Theme.of(context).textTheme.bodySmall,
-        ),
+        Text(switch (status) {
+          WordStatus.newWord => '新学',
+          WordStatus.recognized => '认识',
+          WordStatus.familiar => '熟悉',
+        }, style: Theme.of(context).textTheme.bodySmall),
         IconButton(
           icon: const Icon(Icons.volume_up_outlined, size: 20),
           onPressed: () => VoiceService.instance.speak(wordEnglish(id)),