优化

src/modules/auth/views/AuthViews.test.mjs

@@ -53,6 +53,8 @@ test('implements every backend registration field and real submission', () => {
   for (const field of ['username', 'companyName', 'displayName', 'legalPerson', 'legalPhone', 'contactEmail', 'countryCode', 'address', 'password', 'agreement']) {
     assert.match(registerSource, new RegExp(`prop="${field}"`))
   }
+  assert.match(registerSource, /label="登录手机号" prop="legalPhone"/)
+  assert.match(registerSource, /注册时同时初始化公司联系电话；注册后两者可分别修改，互不联动/)
   assert.match(registerSource, /registerMerchant\(/)
   assert.match(registerSource, /4–64 位/)
   assert.match(registerSource, /8–72 位/)

src/modules/auth/views/RegisterView.vue

@@ -131,7 +131,7 @@ async function submit() {
             <h2 id="contact-section-title">联系信息</h2>
             <div class="register-form-grid">
               <el-form-item label="联系人" prop="displayName" required><el-input v-model="form.displayName" maxlength="64" placeholder="请输入联系人姓名" /></el-form-item>
-              <el-form-item label="法人手机号" prop="legalPhone" required><el-input v-model="form.legalPhone" type="tel" autocomplete="tel" inputmode="numeric" maxlength="11" placeholder="请输入 11 位手机号" :prefix-icon="Phone" /></el-form-item>
+              <el-form-item label="登录手机号" prop="legalPhone" required><el-input v-model="form.legalPhone" type="tel" autocomplete="tel" inputmode="numeric" maxlength="11" placeholder="请输入 11 位手机号" :prefix-icon="Phone" /><span class="register-security-note">注册时同时初始化公司联系电话；注册后两者可分别修改，互不联动。</span></el-form-item>
               <el-form-item label="联系邮箱" prop="contactEmail"><el-input v-model="form.contactEmail" type="email" autocomplete="email" maxlength="128" placeholder="选填，用于接收业务通知" :prefix-icon="Mail" /></el-form-item>
               <el-form-item label="企业地址" prop="address"><el-input v-model="form.address" maxlength="255" placeholder="选填，最多 255 个字符" /></el-form-item>
             </div>