chore: 更新 .gitignore 文件

- 添加 .vscode 目录到 IntelliJ IDEA 忽略列表
- 新增 /logs/、/ruoyi-admin/logs/ 和 /.vscode/ 目录到忽略列表

ruoyi-modules/ruoyi-work/src/main/java/org/dromara/work/service/impl/TpCoursesServiceImpl.java

@@ -90,6 +90,9 @@ public class TpCoursesServiceImpl implements ITpCoursesService {
     public Map<String, Object> queryCount(TpCoursesBo bo) {
         LambdaQueryWrapper<TpCourses> lqw = buildQueryWrapper(bo);
         List<TpCoursesVo> list = baseMapper.selectVoList(lqw);
+        if (list.isEmpty()) {
+            return new HashMap<>();
+        }
         List<TpOrder> orderList = orderMapper.selectList(new LambdaQueryWrapper<TpOrder>().in(TpOrder::getCourseId, list.stream().map(TpCoursesVo::getId).toList()).ne(TpOrder::getPayState, 1));
         Map<String, Object> map = new HashMap<>();
         map.put("count", list.size());