feat: add getTaskReview API endpoint for fetching all reports and fragments by task number

src/main/java/com/guo/learningprogresstracker/controller/ReviewController.java

@@ -32,6 +32,14 @@ public class ReviewController {
         return CommonResult.success(reviewService.getReviewFeed(limit));
     }
 
+    /**
+     * 获取指定任务下的所有报告和残片
+     */
+    @GetMapping("/task/{taskNum}")
+    public CommonResult<List<ReviewFeedItem>> getTaskReview(@PathVariable String taskNum) {
+        return CommonResult.success(reviewService.getTaskReview(taskNum));
+    }
+
     /**
      * 获取报告详情
      */

src/main/java/com/guo/learningprogresstracker/mapper/ReviewMapper.java

@@ -16,4 +16,9 @@ public interface ReviewMapper {
      * 获取最近的学习报告和残片，合并排序后返回
      */
     List<ReviewFeedItem> selectReviewFeed(@Param("limit") int limit);
+
+    /**
+     * 获取指定任务下的所有报告和残片，按时间倒序
+     */
+    List<ReviewFeedItem> selectTaskReview(@Param("taskNum") String taskNum);
 }

src/main/java/com/guo/learningprogresstracker/service/ReviewService.java

@@ -17,6 +17,11 @@ public interface ReviewService {
      */
     List<ReviewFeedItem> getReviewFeed(int limit);
 
+    /**
+     * 获取指定任务下的所有报告和残片
+     */
+    List<ReviewFeedItem> getTaskReview(String taskNum);
+
     /**
      * 获取报告详情
      */

src/main/java/com/guo/learningprogresstracker/service/impl/ReviewServiceImpl.java

@@ -30,6 +30,11 @@ public class ReviewServiceImpl implements ReviewService {
         return reviewMapper.selectReviewFeed(limit);
     }
 
+    @Override
+    public List<ReviewFeedItem> getTaskReview(String taskNum) {
+        return reviewMapper.selectTaskReview(taskNum);
+    }
+
     @Override
     public StudyReportsEntity getReportDetail(int id) throws NotFindEntitiesException {
         return Optional.ofNullable(studyReportsMapper.selectById(id))

src/main/resources/mapper/ReviewMapper.xml

@@ -28,4 +28,28 @@
         LIMIT #{limit}
     </select>
 
+    <select id="selectTaskReview" resultType="com.guo.learningprogresstracker.dto.ReviewFeedItem">
+        SELECT
+            combined.id,
+            combined.session_num   AS sessionNum,
+            combined.source_type   AS sourceType,
+            combined.content,
+            combined.created_time  AS createdTime,
+            t.task_num             AS taskNum,
+            t.task_name            AS taskName
+        FROM (
+            SELECT r.id, r.session_num, r.content, r.created_time, 'REPORT' AS source_type
+            FROM study_reports r
+            WHERE r.deleted = 0
+            UNION ALL
+            SELECT f.id, f.session_num, f.content, f.created_time, 'FRAGMENT' AS source_type
+            FROM study_report_fragments f
+            WHERE f.deleted = 0
+        ) combined
+        JOIN study_sessions ss ON combined.session_num = ss.session_num AND ss.deleted = 0
+        JOIN tasks t ON ss.task_num = t.task_num AND t.deleted = 0
+        WHERE t.task_num = #{taskNum}
+        ORDER BY combined.created_time DESC
+    </select>
+
 </mapper>