feat(review): 新增复习内容滚动展示与交互 API

- 新增 /review/feed 端点，合并报告和残片数据按时间倒序返回
- 新增 /review/report/{id} 和 /review/fragment/{id} 端点
- 支持复习内容在首页滚动展示及点击查看详情

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

@@ -0,0 +1,50 @@
+package com.guo.learningprogresstracker.controller;
+
+import com.guo.learningprogresstracker.dto.ReviewFeedItem;
+import com.guo.learningprogresstracker.entity.CommonResult;
+import com.guo.learningprogresstracker.entity.StudyReportFragmentsEntity;
+import com.guo.learningprogresstracker.entity.StudyReportsEntity;
+import com.guo.learningprogresstracker.exception.NotFindEntitiesException;
+import com.guo.learningprogresstracker.service.impl.ReviewServiceImpl;
+import lombok.RequiredArgsConstructor;
+import org.springframework.validation.annotation.Validated;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+/**
+ * 复习模块控制层 — 复习内容滚动展示与交互
+ */
+@RequestMapping("/review")
+@RestController
+@Validated
+@RequiredArgsConstructor
+public class ReviewController {
+
+    private final ReviewServiceImpl reviewService;
+
+    /**
+     * 获取复习 feed，合并报告和残片按时间倒序
+     */
+    @GetMapping("/feed")
+    public CommonResult<List<ReviewFeedItem>> getReviewFeed(
+            @RequestParam(defaultValue = "30") int limit) {
+        return CommonResult.success(reviewService.getReviewFeed(limit));
+    }
+
+    /**
+     * 获取报告详情
+     */
+    @GetMapping("/report/{id}")
+    public CommonResult<StudyReportsEntity> getReportDetail(@PathVariable int id) throws NotFindEntitiesException {
+        return CommonResult.success(reviewService.getReportDetail(id));
+    }
+
+    /**
+     * 获取残片详情
+     */
+    @GetMapping("/fragment/{id}")
+    public CommonResult<StudyReportFragmentsEntity> getFragmentDetail(@PathVariable int id) throws NotFindEntitiesException {
+        return CommonResult.success(reviewService.getFragmentDetail(id));
+    }
+}