feat: 实现项目状态统计方法

- 添加 getStatusCounts() 方法实现
- 使用 MyBatis Plus selectCount 统计各状态项目数量
- 统计全部项目、进行中(0)、已完成(1)、已归档(2)的项目数量

ccdi-project/src/main/java/com/ruoyi/ccdi/project/service/impl/CcdiProjectServiceImpl.java

@@ -1,9 +1,11 @@
 package com.ruoyi.ccdi.project.service.impl;
 
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.ruoyi.ccdi.project.domain.CcdiProject;
 import com.ruoyi.ccdi.project.domain.dto.CcdiProjectQueryDTO;
 import com.ruoyi.ccdi.project.domain.dto.CcdiProjectSaveDTO;
+import com.ruoyi.ccdi.project.domain.vo.CcdiProjectStatusCountsVO;
 import com.ruoyi.ccdi.project.domain.vo.CcdiProjectVO;
 import com.ruoyi.ccdi.project.mapper.CcdiProjectMapper;
 import com.ruoyi.ccdi.project.service.ICcdiProjectService;
@@ -86,4 +88,36 @@ public class CcdiProjectServiceImpl implements ICcdiProjectService {
     public Page<CcdiProjectVO> selectProjectPage(Page<CcdiProjectVO> page, CcdiProjectQueryDTO queryDTO) {
         return projectMapper.selectProjectPage(page, queryDTO);
     }
+
+    @Override
+    public CcdiProjectStatusCountsVO getStatusCounts() {
+        CcdiProjectStatusCountsVO vo = new CcdiProjectStatusCountsVO();
+
+        // 统计全部项目
+        Long totalCount = projectMapper.selectCount(null);
+        vo.setAll(totalCount);
+
+        // 统计进行中项目（状态0）
+        Long status0Count = projectMapper.selectCount(
+            new LambdaQueryWrapper<CcdiProject>()
+                .eq(CcdiProject::getStatus, "0")
+        );
+        vo.setStatus0(status0Count);
+
+        // 统计已完成项目（状态1）
+        Long status1Count = projectMapper.selectCount(
+            new LambdaQueryWrapper<CcdiProject>()
+                .eq(CcdiProject::getStatus, "1")
+        );
+        vo.setStatus1(status1Count);
+
+        // 统计已归档项目（状态2）
+        Long status2Count = projectMapper.selectCount(
+            new LambdaQueryWrapper<CcdiProject>()
+                .eq(CcdiProject::getStatus, "2")
+        );
+        vo.setStatus2(status2Count);
+
+        return vo;
+    }
 }