feat(注册页面): 添加手机号验证和验证码功能

增加手机号输入字段的验证逻辑，确保输入格式正确。添加验证码输入字段和获取验证码按钮，并实现倒计时功能。优化表单提交逻辑，确保所有必填字段都已填写且手机号格式正确。

@@ -27,15 +27,44 @@
 
           <div>
             <label for="phone" class="block text-sm font-medium text-gray-700">
-              手机号
+              手机号 <span class="text-red-500">*</span>
             </label>
             <input
               id="phone"
               v-model="formData.phone"
               autocomplete="tel"
               type="tel"
+              required
+              pattern="^1[3-9]\d{9}$"
+              @blur="validatePhone"
               class="mt-1 block w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-green-500 focus:border-green-500"
+              :class="{ 'border-red-300': phoneError }"
             />
+            <p v-if="phoneError" class="mt-1 text-sm text-red-600">{{ phoneError }}</p>
+          </div>
+
+          <div>
+            <label for="verificationCode" class="block text-sm font-medium text-gray-700">
+              验证码 <span class="text-red-500">*</span>
+            </label>
+            <div class="flex space-x-2">
+              <input
+                id="verificationCode"
+                v-model="formData.verificationCode"
+                type="text"
+                required
+                maxlength="6"
+                class="mt-1 block w-full px-3 py-2 border border-gray-300 rounded-md shadow-sm focus:outline-none focus:ring-green-500 focus:border-green-500"
+              />
+              <button
+                type="button"
+                :disabled="countdown > 0 || !isPhoneValid"
+                @click="sendVerificationCode"
+                class="mt-1 px-4 py-2 border border-transparent text-sm font-medium rounded-md text-white bg-green-600 hover:bg-green-700 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-green-500 disabled:opacity-50 disabled:cursor-not-allowed whitespace-nowrap"
+              >
+                {{ countdown > 0 ? `${countdown}秒后重试` : '获取验证码' }}
+              </button>
+            </div>
           </div>
 
           <div>
@@ -161,39 +190,72 @@ useTitle($route.meta.title);
 const router = useRouter()
 const { login } = useAuth()
 
+const countdown = ref(0)
+
 const formData = reactive({
   name: '',
   phone: '',
+  verificationCode: '',
   password: '',
   confirmPassword: '',
   agreeTerms: false
 })
 
-const error = ref('')
-const loading = ref(false)
-const showTerms = ref(false)
-const showPrivacy = ref(false)
-const popupTitle = ref('')
-const popupType = ref('')
-
-const openTerms = () => {
-  popupTitle.value = '用户协议'
-  popupType.value = 'terms'
-  showTerms.value = true
+const startCountdown = () => {
+  countdown.value = 60
+  const timer = setInterval(() => {
+    countdown.value--
+    if (countdown.value <= 0) {
+      clearInterval(timer)
+    }
+  }, 1000)
+}
+
+const phoneError = ref('')
+const isPhoneValid = ref(false)
+
+const validatePhone = () => {
+  if (!formData.phone) {
+    phoneError.value = '请输入手机号'
+    isPhoneValid.value = false
+    return
+  }
+
+  if (!/^1[3-9]\d{9}$/.test(formData.phone)) {
+    phoneError.value = '请输入正确的手机号'
+    isPhoneValid.value = false
+    return
+  }
+
+  phoneError.value = ''
+  isPhoneValid.value = true
 }
 
-const openPrivacy = () => {
-  popupTitle.value = '隐私政策'
-  popupType.value = 'privacy'
-  showPrivacy.value = true
+const sendVerificationCode = async () => {
+  if (!isPhoneValid.value) {
+    return
+  }
+
+  try {
+    // TODO: 调用发送验证码API
+    startCountdown()
+  } catch (err) {
+    console.error('Send verification code error:', err)
+    error.value = '发送验证码失败，请稍后重试'
+  }
 }
 
 const handleSubmit = async () => {
-  if (!formData.name || !formData.password) {
+  if (!formData.name || !formData.password || !formData.phone || !formData.verificationCode) {
     error.value = '请填写所有必填字段'
     return
   }
 
+  if (!/^1[3-9]\d{9}$/.test(formData.phone)) {
+    error.value = '请输入正确的手机号'
+    return
+  }
+
   if (formData.password !== formData.confirmPassword) {
     error.value = '两次输入的密码不一致'
     return