feat(复习)：标准思维导图生成与回忆对比

- 新增 review_standard_mind_maps / review_recall_records 数据表
- BuiltinMindMapGenerator：从报告/残片/应用场景规则生成标准导图
- MindMapAiClient 接口 + RemoteAiMindMapClient 预留
- StandardMindMapService：生成/编辑/重新生成/回忆对比
- 对比算法：标题归一化 + Bigram Jaccard 模糊匹配
- ReviewController 新增 6 个端点
- MindMapTreeTool / MindMapNode / CompareResult 工具类
- 完整单元测试（10 个，全部通过）
- 更新 docs/review-module-design.md

src/test/java/com/guo/learningprogresstracker/service/impl/ReviewServiceImplTest.java

@@ -3,18 +3,14 @@ package com.guo.learningprogresstracker.service.impl;
 import com.baomidou.mybatisplus.core.MybatisConfiguration;
 import com.baomidou.mybatisplus.core.metadata.TableInfoHelper;
 import com.guo.learningprogresstracker.dto.ReviewFeedItem;
-import com.guo.learningprogresstracker.dto.request.CreateReviewApplicationRequest;
 import com.guo.learningprogresstracker.dto.request.UpsertReviewMindMapRequest;
-import com.guo.learningprogresstracker.entity.ReviewApplicationEntity;
 import com.guo.learningprogresstracker.entity.ReviewMindMapEntity;
 import com.guo.learningprogresstracker.entity.StudyReportFragmentsEntity;
 import com.guo.learningprogresstracker.entity.StudyReportsEntity;
 import com.guo.learningprogresstracker.entity.StudySessionsEntity;
 import com.guo.learningprogresstracker.entity.TaskEntity;
-import com.guo.learningprogresstracker.enums.ReviewApplicationStatusEnum;
 import com.guo.learningprogresstracker.enums.ReviewMindMapFileFormatEnum;
 import com.guo.learningprogresstracker.enums.ReviewMindMapParseStatusEnum;
-import com.guo.learningprogresstracker.mapper.ReviewApplicationMapper;
 import com.guo.learningprogresstracker.mapper.ReviewMindMapMapper;
 import com.guo.learningprogresstracker.mapper.StudyReportFragmentsMapper;
 import com.guo.learningprogresstracker.mapper.StudyReportsMapper;
@@ -50,7 +46,6 @@ class ReviewServiceImplTest {
         TableInfoHelper.initTableInfo(new MapperBuilderAssistant(configuration, ""), StudyReportFragmentsEntity.class);
         TableInfoHelper.initTableInfo(new MapperBuilderAssistant(configuration, ""), StudySessionsEntity.class);
         TableInfoHelper.initTableInfo(new MapperBuilderAssistant(configuration, ""), TaskEntity.class);
-        TableInfoHelper.initTableInfo(new MapperBuilderAssistant(configuration, ""), ReviewApplicationEntity.class);
         TableInfoHelper.initTableInfo(new MapperBuilderAssistant(configuration, ""), ReviewMindMapEntity.class);
     }
 
@@ -69,9 +64,6 @@ class ReviewServiceImplTest {
     @Mock
     private TasksMapper tasksMapper;
 
-    @Mock
-    private ReviewApplicationMapper reviewApplicationMapper;
-
     @Mock
     private ReviewMindMapMapper reviewMindMapMapper;
 
@@ -109,27 +101,6 @@ class ReviewServiceImplTest {
         assertEquals("Task", items.get(0).getTaskName());
     }
 
-    @Test
-    void createApplication_shouldUseDefaultStatusWhenStatusInvalid() throws Exception {
-        when(tasksMapper.exists(any())).thenReturn(true);
-        when(reviewApplicationMapper.insert(any())).thenAnswer(invocation -> {
-            ReviewApplicationEntity entity = invocation.getArgument(0);
-            entity.setId(7);
-            return 1;
-        });
-
-        CreateReviewApplicationRequest request = new CreateReviewApplicationRequest();
-        request.setTaskNum("T1");
-        request.setTitle("Build a demo");
-        request.setStatus("invalid");
-
-        ReviewApplicationEntity entity = reviewService.createApplication(request);
-
-        assertEquals(7, entity.getId());
-        assertEquals(ReviewApplicationStatusEnum.TODO.getCode(), entity.getStatus());
-        verify(reviewApplicationMapper).insert(any(ReviewApplicationEntity.class));
-    }
-
     @Test
     void upsertMindMap_shouldCreateWhenMissing() throws Exception {
         when(tasksMapper.exists(any())).thenReturn(true);