refactor(oa): 简化项目进度统计逻辑

- 移除不必要的中间变量 progressStats
- 直接将统计数据放入结果 map 中
- 减少代码嵌套层级，提高可读性

ruoyi-oa/src/main/java/com/ruoyi/oa/service/impl/OaProjectScheduleStepServiceImpl.java

@@ -401,7 +401,6 @@ public class OaProjectScheduleStepServiceImpl implements IOaProjectScheduleStepS
         List<OaProjectScheduleStep> userSteps = projectScheduleStepMapper.selectList(stepWrapper);
 
         // 统计进度数据（总数量、完成数、待验收数、延期数）
-        Map<String, Object> progressStats = new HashMap<>();
         long total = userSteps.size();
         long completed = userSteps.stream()
                 .filter(step -> step.getStatus() != null && step.getStatus() == 2) // 已完成
@@ -414,11 +413,10 @@ public class OaProjectScheduleStepServiceImpl implements IOaProjectScheduleStepS
                 .filter(step -> step.getEndTime().isAfter(step.getOriginalEndTime())) // 实际结束>原定结束
                 .count();
 
-        progressStats.put("total", total);
-        progressStats.put("completed", completed);
-        progressStats.put("pendingAcceptance", pendingAcceptance);
-        progressStats.put("delayed", delayed);
-        result.put("progressStats", progressStats);
+        result.put("total", total);
+        result.put("completed", completed);
+        result.put("pendingAcceptance", pendingAcceptance);
+        result.put("delayed", delayed);
 
         return result;
     }