chore: 配置开发服务器host和端口

- host: 0.0.0.0 允许外部访问
- port: 8084

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

vue.config.js

@@ -16,6 +16,8 @@ module.exports = {
   publicPath: './',
 
   devServer: {
+    host: '0.0.0.0',
+    port: 8084,
     proxy: {
       // 代理所有 /api 开头的请求
       '/api': {