fix(lesson-plan): 优化学案生成文本及缓存时长

- 调整学案生成时异常提示文案为“学案正在生成，请耐心等待”
- 缩短Redis缓存过期时间由12分钟改为7分钟，提高资源释放效率
- 修正生成标题中去除学生ID显示，避免冗余信息
- 将词汇列表转换为Word对象，隐藏单词展示内容以模拟填空效果
- 调整多轮练习词汇列表展示样式，统一处理单词显示
- 混合练习中隐藏词汇释义文本，防止提前泄露答案
- 保持数据结构适配前端练习需求，提升用户体验

enlish-service/src/main/java/com/yinlihupo/enlish/service/controller/LessonPlanController.java

@@ -54,7 +54,7 @@ public class LessonPlanController {
         Integer wordSize = addLessonPlanReqVO.getWordSize();
         try {
             if (redisTemplate.opsForValue().get(LessonPlanConstant.buildGeneratePlanContent(studentId)) != null) {
-                throw new RuntimeException("学案正常生成中");
+                throw new RuntimeException("学案正在生成，请耐心等待");
             }
             taskExecutor.execute(() -> lessonPlanService.generateLessonPlans(studentId, unitId, wordSize));
             return Response.success("生成学案成功，请等待 10 分钟");

enlish-service/src/main/java/com/yinlihupo/enlish/service/service/plan/LessonPlansServiceImpl.java

@@ -5,6 +5,7 @@ import com.yinlihupo.enlish.service.constant.LessonPlanConstant;
 import com.yinlihupo.enlish.service.domain.dataobject.*;
 import com.yinlihupo.enlish.service.domain.mapper.*;
 import com.yinlihupo.enlish.service.model.bo.Sentence;
+import com.yinlihupo.enlish.service.model.bo.Word;
 import com.yinlihupo.enlish.service.service.LessonPlansService;
 import com.yinlihupo.enlish.service.utils.DifyClient;
 import com.yinlihupo.enlish.service.utils.StringToPlanMapUtil;
@@ -55,7 +56,7 @@ public class LessonPlansServiceImpl implements LessonPlansService {
     public void generateLessonPlans(Integer studentId, Integer unitId, Integer wordSize) {
         String key = LessonPlanConstant.buildGeneratePlanContent(studentId);
         redisTemplate.opsForValue().set(key, studentId);
-        redisTemplate.expire( key, 12, TimeUnit.MINUTES);
+        redisTemplate.expire(key, 7, TimeUnit.MINUTES);
 
         log.info("开始生成计划");
         List<VocabularyBankDO> vocabularyBankDOS = vocabularyBankDOMapper.selectVocabularyBankDOAllByUnitId(unitId);
@@ -249,7 +250,7 @@ public class LessonPlansServiceImpl implements LessonPlansService {
                                         List<VocabularyBankDO> checkList,
                                         int day,
                                         GradeDO gradeDO, UnitDO unitDO, Integer studentId) throws Exception {
-        String title = gradeDO.getTitle() + " " + unitDO.getTitle() + " " + "第" + day + "天" + studentId;
+        String title = gradeDO.getTitle() + " " + unitDO.getTitle() + " " + "第" + day + "天";
         Map<String, Object> data = new HashMap<>();
         data.put("title", title);
         data.put("syncVocabList", syncVocabList);
@@ -259,13 +260,16 @@ public class LessonPlansServiceImpl implements LessonPlansService {
         data.put("checkListAns", checkList);
 
         // 中译英
-        List<VocabularyBankDO> drillRound1 = new ArrayList<>(syncVocabList);
+        List<Word> list = syncVocabList.stream().map(vocabularyBankDO -> Word.builder().title(vocabularyBankDO.getWord()).definition(vocabularyBankDO.getDefinition()).build()).toList();
+        list.forEach(word -> word.setTitle("                "));
+
+        List<Word> drillRound1 = new ArrayList<>(list);
         Collections.shuffle(drillRound1);
         data.put("drillRound1", drillRound1);
-        List<VocabularyBankDO> drillRound2 = new ArrayList<>(syncVocabList);
+        List<Word> drillRound2 = new ArrayList<>(list);
         Collections.shuffle(drillRound2);
         data.put("drillRound2", drillRound2);
-        List<VocabularyBankDO> drillRound3 = new ArrayList<>(syncVocabList);
+        List<Word> drillRound3 = new ArrayList<>(list);
         Collections.shuffle(drillRound3);
         data.put("drillRound3", drillRound3);
 
@@ -274,8 +278,10 @@ public class LessonPlansServiceImpl implements LessonPlansService {
         mixedDrill.addAll(syncVocabList);
         mixedDrill.addAll(gapVocabList);
         mixedDrill.addAll(reviewVocabList);
-        Collections.shuffle(mixedDrill);
+        List<Word> mixedList = new ArrayList<>(mixedDrill.stream().map(vocabularyBankDO -> Word.builder().title(vocabularyBankDO.getWord()).definition(vocabularyBankDO.getDefinition()).build()).toList());
-        data.put("mixedDrill", mixedDrill);
+        mixedList.forEach(word -> word.setDefinition("                "));
+        Collections.shuffle(mixedList);
+        data.put("mixedDrill", mixedList);
 
         // 文章 A
         log.info("生成文章 A 中文开始");