feat: 清理示例数据并统一空态体验

frontend/src/components/ModulePlaceholder.vue

@@ -10,11 +10,9 @@
       </div>
       <div class="module-content unified-section section--flush">
         <div class="module-list">
-          <div class="module-list-header">
-            <span class="list-title">{{ listTitle }}</span>
-            <span class="list-note">{{ TEXT.common.empty.listPlaceholder }}</span>
+          <div class="module-placeholder-surface">
+            <div class="module-placeholder-main">{{ emptyDescription || emptyTitle }}</div>
           </div>
-          <StateEmpty :title="emptyTitle" :description="emptyDescription" />
         </div>
       </div>
     </div>
@@ -22,7 +20,6 @@
 </template>
 
 <script setup lang="ts">
-import StateEmpty from "./StateEmpty.vue";
 import { TEXT } from "../locales";
 
 withDefaults(
@@ -69,21 +66,24 @@ withDefaults(
   padding: 0;
 }
 
-.module-list-header {
+.module-placeholder-surface {
+  min-height: 168px;
   display: flex;
-  justify-content: space-between;
   align-items: center;
-  margin-bottom: 12px;
+  justify-content: center;
+  border-radius: 18px;
+  padding: 24px;
+  background:
+    linear-gradient(180deg, rgba(246, 249, 253, 0.96), rgba(251, 253, 255, 0.98));
 }
 
-.list-title {
-  font-size: 14px;
-  font-weight: 600;
-  color: var(--ctms-text-main);
-}
-
-.list-note {
-  font-size: 12px;
-  color: var(--ctms-text-disabled);
+.module-placeholder-main {
+  max-width: 560px;
+  text-align: center;
+  font-size: 18px;
+  font-weight: 700;
+  line-height: 1.6;
+  letter-spacing: 0.01em;
+  color: #243a5a;
 }
 </style>