feat(biji): 添加最近更新笔记功能

- 在前端添加 getRecentFiles API 接口
- 在后端添加 getRecentFiles 接口和相关服务方法
- 实现最近更新笔记的获取和展示
- 优化首页初始化逻辑，加载最近更新笔记

biji-houdaun/src/main/java/com/test/bijihoudaun/config/MybatisPlusConfig.java

@@ -0,0 +1,21 @@
+package com.test.bijihoudaun.config;
+
+import com.baomidou.mybatisplus.annotation.DbType;
+import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
+import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class MybatisPlusConfig {
+
+    /**
+     * 添加分页插件
+     */
+    @Bean
+    public MybatisPlusInterceptor mybatisPlusInterceptor() {
+        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
+        interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.SQLITE));
+        return interceptor;
+    }
+}

biji-houdaun/src/main/java/com/test/bijihoudaun/controller/MarkdownController.java

@@ -94,4 +94,11 @@ public class MarkdownController {
         }
         return R.fail("文件未找到或更新失败");
     }
+
+    @Operation(summary = "获取最近更新的笔记")
+    @GetMapping("/recent")
+    public R<List<MarkdownFile>> getRecentFiles() {
+        List<MarkdownFile> files = markdownFileService.getRecentFiles(10);
+        return R.success(files);
+    }
 }

biji-houdaun/src/main/java/com/test/bijihoudaun/service/MarkdownFileService.java

@@ -57,4 +57,11 @@ public interface MarkdownFileService extends IService<MarkdownFile> {
      * @return 更新后的文件对象
      */
     MarkdownFile updateMarkdownTitle(Long id, String title);
+
+    /**
+     * 获取最近更新的笔记
+     * @param limit 数量
+     * @return 文件列表
+     */
+    List<MarkdownFile> getRecentFiles(int limit);
 }

biji-houdaun/src/main/java/com/test/bijihoudaun/service/impl/MarkdownFileServiceImpl.java

@@ -1,7 +1,7 @@
 package com.test.bijihoudaun.service.impl;
 
 import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
-
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import com.test.bijihoudaun.entity.MarkdownFile;
 import com.test.bijihoudaun.mapper.MarkdownFileMapper;
@@ -86,4 +86,12 @@ public class MarkdownFileServiceImpl
         }
         return file;
     }
+
+    @Override
+    public List<MarkdownFile> getRecentFiles(int limit) {
+        Page<MarkdownFile> page = new Page<>(1, limit);
+        QueryWrapper<MarkdownFile> queryWrapper = new QueryWrapper<>();
+        queryWrapper.orderByDesc("updated_at");
+        return this.page(page, queryWrapper).getRecords();
+    }
 }