添加预算管理功能，重构账单和消息视图，优化路由和组件交互

Web/src/views/MessageView.vue

@@ -1,6 +1,6 @@
 <template>
   <div class="page-container-flex">
-    <van-nav-bar title="消息中心">
+    <van-nav-bar v-if="!isComponent" title="消息中心">
       <template #right>
         <van-icon name="passed" size="18" @click="handleMarkAllRead" />
       </template>
@@ -207,6 +207,16 @@ const handleMarkAllRead = () => {
 onMounted(() => {
   // onLoad 会由 van-list 自动触发
 });
+const props = defineProps({
+  isComponent: {
+    type: Boolean,
+    default: false
+  }
+});
+
+defineExpose({
+  handleMarkAllRead
+});
 </script>
 
 <style scoped>