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/components/MobileBottomCTA.vue

@@ -0,0 +1,12 @@
+<template>
+  <div class="fixed bottom-0 left-0 right-0 lg:hidden z-40 bg-white border-t border-gray-200 px-4 py-3 safe-area-bottom">
+    <NuxtLink to="/contact"
+      class="block w-full text-center px-6 py-3 bg-cta text-white rounded-xl font-semibold text-base shadow-lg">
+      预约演示
+    </NuxtLink>
+  </div>
+</template>
+
+<style scoped>
+.safe-area-bottom { padding-bottom: max(0.75rem, env(safe-area-inset-bottom)); }
+</style>