feat: 初始化居家上门服务系统完整项目代码

- Spring Boot 后端服务 (hss-home-service)
- delivery-miniapp 配送小程序
- website 官网 (Nuxt)
- docs 架构设计文档
- Docker 容器化部署配置

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

hss-home-service/website/app.vue

@@ -0,0 +1,9 @@
+<template>
+  <div class="min-h-screen bg-surface-white text-text-primary">
+    <AppHeader />
+    <main>
+      <NuxtPage />
+    </main>
+    <AppFooter />
+  </div>
+</template>