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/test/review_ai_check_test.dart

@@ -136,9 +136,9 @@ void main() {
         );
         await tester.enterText(find.byType(TextField), 'I am from Chna');
         await tester.pump();
-        final aiButton = find.text('AI 检查语法和拼写（可选）');
-        await tester.ensureVisible(aiButton);
-        await tester.tap(aiButton);
+        final submit = find.text('检查并提交');
+        await tester.ensureVisible(submit);
+        await tester.tap(submit);
         await tester.runAsync(
           () => Future<void>.delayed(const Duration(milliseconds: 50)),
         );
@@ -161,12 +161,42 @@ void main() {
 
     expect(find.text('· Chna 拼写应为 China'), findsOneWidget);
     expect(find.text('参考改正：I am from China.'), findsOneWidget);
-    final submit = find.text('带提示完成');
-    expect(submit, findsOneWidget);
-    await tester.ensureVisible(submit);
-    await tester.tap(submit);
+    expect(state.attemptEvidence, isEmpty);
+    await tester.enterText(find.byType(TextField), 'I am from China.');
     await tester.pump();
-
+    final submit = find.text('带提示完成');
+    await http.runWithClient(
+      () async {
+        await tester.ensureVisible(submit);
+        await tester.tap(submit);
+        await tester.runAsync(
+          () => Future<void>.delayed(const Duration(milliseconds: 50)),
+        );
+        await tester.pump();
+      },
+      () => MockClient(
+        (request) async => http.Response(
+          jsonEncode({
+            'choices': [
+              {
+                'message': {
+                  'content': jsonEncode({
+                    'schemaVersion': 'writing-feedback-1',
+                    'verdict': 'accepted',
+                    'feedback': '表达正确。',
+                    'suggestion': null,
+                    'missing': <String>[],
+                    'lessonId': 'A0-P12',
+                  }),
+                },
+              },
+            ],
+          }),
+          200,
+          headers: {'content-type': 'application/json; charset=utf-8'},
+        ),
+      ),
+    );
     expect(state.attemptEvidence.single.outcome, EvidenceKind.assisted);
     expect(state.attemptEvidence.single.assisted, isTrue);
   });