style: 公众端剩余页面紫粉主题清理

- Gallery.vue 编辑推荐图标 FireOutlined → CrownFilled，#f59e0b → 主色
- mine/Index.vue 我的收藏菜单图标暖黄 + 橙 → 粉色
- mine/Registrations.vue 待审核 a-tag orange → gold（更柔和的状态色）
- mine/Children.vue 受限模式 a-tag orange → purple
- ActivityDetail.vue 成果区图标 #f59e0b → 主色

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/views/public/ActivityDetail.vue

@@ -683,7 +683,7 @@ $primary: #6366f1;
 
     .results-icon {
       font-size: 40px;
-      color: #f59e0b;
+      color: #6366f1;
       margin-bottom: 8px;
       display: block;
     }

frontend/src/views/public/Gallery.vue

@@ -15,7 +15,7 @@
     <!-- 推荐作品 -->
     <div class="recommend-section" v-if="recommendedWorks.length > 0">
       <div class="section-header">
-        <span class="section-title"><fire-outlined /> 编辑推荐</span>
+        <span class="section-title"><crown-filled /> 编辑推荐</span>
       </div>
       <div class="recommend-scroll">
         <div
@@ -116,7 +116,7 @@
 import { ref, reactive, computed, onMounted } from 'vue'
 import { useRouter } from 'vue-router'
 import { message } from 'ant-design-vue'
-import { SearchOutlined, PictureOutlined, HeartOutlined, HeartFilled, EyeOutlined, FireOutlined } from '@ant-design/icons-vue'
+import { SearchOutlined, PictureOutlined, HeartOutlined, HeartFilled, EyeOutlined, CrownFilled } from '@ant-design/icons-vue'
 import { publicGalleryApi, publicTagsApi, publicInteractionApi, type UserWork, type WorkTag } from '@/api/public'
 
 const router = useRouter()
@@ -239,7 +239,7 @@ $primary: #6366f1;
       align-items: center;
       gap: 6px;
 
-      :deep(.anticon) { color: #f59e0b; }
+      :deep(.anticon) { color: $primary; }
     }
   }
 }

frontend/src/views/public/mine/Children.vue

@@ -32,7 +32,7 @@
             <a-tag :color="child.status === 'enabled' ? 'green' : 'red'" size="small">
               {{ child.status === 'enabled' ? '正常' : '已禁用' }}
             </a-tag>
-            <a-tag v-if="child.controlMode === 'restricted'" color="orange" size="small">受限模式</a-tag>
+            <a-tag v-if="child.controlMode === 'restricted'" color="purple" size="small">受限模式</a-tag>
           </div>
         </div>
         <div class="child-actions">

frontend/src/views/public/mine/Index.vue

@@ -34,7 +34,7 @@
       </div>
 
       <div class="menu-item" @click="$router.push('/p/mine/favorites')">
-        <div class="menu-icon" style="background: #fef3c7; color: #f59e0b">
+        <div class="menu-icon" style="background: #fce7f3; color: #ec4899">
           <star-outlined />
         </div>
         <div class="menu-content">

frontend/src/views/public/mine/Registrations.vue

@@ -113,7 +113,7 @@ const statusLabel = (s: string) => {
 }
 
 const statusColor = (s: string) => {
-  const map: Record<string, string> = { pending: 'orange', passed: 'green', rejected: 'red', withdrawn: 'default' }
+  const map: Record<string, string> = { pending: 'gold', passed: 'green', rejected: 'red', withdrawn: 'default' }
   return map[s] || 'default'
 }