feat: add completion query and configurable system identity

zzw

昨天 1332cc511936d7dbe804921bc733c83d5e4d1400

 emergency-repair-web/src/views/Login.vue

@@ -4,7 +4,7 @@
      <div class="login-brand">
        <repair-logo></repair-logo>
        <div>
          <h1>临抢修管理系统</h1>
          <h1>{{ $appName }}</h1>
        </div>
      </div>
      <el-form ref="form" :model="form" :rules="rules" label-position="top" @keyup.enter.native="submit">