feat: 简化项目管理页面标题，移除副标题

ruoyi-ui/src/views/ccdiProject/index.vue

@@ -3,7 +3,7 @@
     <!-- 页面标题 -->
     <div class="page-header">
       <h2 class="page-title">初核项目管理</h2>
-      <p class="page-subtitle">管理纪检初核排查项目，跟踪预警信息</p>
+      <el-button type="primary" icon="el-icon-plus" @click="handleAdd">新建项目</el-button>
     </div>
 
     <!-- 搜索和操作区 -->
@@ -233,24 +233,20 @@ export default {
 }
 
 .page-header {
-  margin-bottom: 12px;
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  margin-bottom: 16px;
   padding: 16px 20px;
   background: #ffffff;
-  border-radius: 4px;
-  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
+  border-radius: 8px;
+  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
 
   .page-title {
     margin: 0;
-    font-size: 18px;
+    font-size: 20px;
     font-weight: 500;
     color: #303133;
   }
-
-  .page-subtitle {
-    margin: 4px 0 0 0;
-    font-size: 13px;
-    color: #909399;
-    font-weight: 400;
-  }
 }
 </style>