refactor: 抽离短信验证码倒计时 Composable 并拆分模块化 base.css 样式文件

frontend/src/views/mobile/MobileLoginView.vue

@@ -1,76 +1,22 @@
 <script setup lang="ts">
-import { onUnmounted, reactive, ref } from "vue";
+import { reactive, ref } from "vue";
 import { RouterLink, useRoute, useRouter } from "vue-router";
 import { showToast, showDialog } from "vant";
 
-import { sendSmsCode } from "@/api/auth";
 import { useSessionStore } from "@/stores/session";
+import { useSmsCountdown } from "@/composables/useSmsCountdown";
 
 const router = useRouter();
 const route = useRoute();
 const session = useSessionStore();
 const loading = ref(false);
-const sending = ref(false);
 const agreed = ref(false);
 const form = reactive({
   phone: "",
   code: "",
 });
 
-const countDown = ref(0);
-let timer: ReturnType<typeof setInterval> | null = null;
-
-function startCountDown() {
-  countDown.value = 60;
-  timer = setInterval(() => {
-    countDown.value--;
-    if (countDown.value <= 0) {
-      clearInterval(timer!);
-      timer = null;
-    }
-  }, 1000);
-}
-
-onUnmounted(() => {
-  if (timer) {
-    clearInterval(timer);
-    timer = null;
-  }
-});
-
-/* --------- 业务方法 --------- */
-async function handleSendCode() {
-  if (!form.phone.trim()) {
-    showToast({ message: "请输入手机号", icon: "warning-o" });
-    return;
-  }
-
-  sending.value = true;
-  try {
-    await sendSmsCode(form.phone);
-    showToast({
-      message: "验证码已发送，开发环境请查看后端日志",
-      icon: "passed",
-    });
-    startCountDown();
-  } catch (error) {
-    showToast({
-      message: readError(error, "验证码发送失败，请稍后重试"),
-      icon: "cross",
-    });
-  } finally {
-    sending.value = false;
-  }
-}
-
-function readError(error: unknown, fallback: string) {
-  if (typeof error === "object" && error && "response" in error) {
-    const response = (error as { response?: { data?: { message?: string } } })
-      .response;
-    return response?.data?.message || fallback;
-  }
-  return fallback;
-}
+const { countDown, sending, handleSendCode, readError } = useSmsCountdown();
 
 async function handleLogin() {
   if (!agreed.value) {
@@ -135,7 +81,7 @@ async function handleLogin() {
               :disabled="sending || countDown > 0"
               :loading="sending"
               class="code-btn"
-              @click="handleSendCode"
+              @click="handleSendCode(form.phone)"
             >
               {{
                 countDown > 0

frontend/src/views/mobile/MobileRegisterView.vue

@@ -1,16 +1,15 @@
 <script setup lang="ts">
-import { onUnmounted, reactive, ref } from "vue";
+import { reactive, ref } from "vue";
 import { RouterLink, useRoute, useRouter } from "vue-router";
 import { showToast } from "vant";
 
-import { sendSmsCode } from "@/api/auth";
 import { useSessionStore } from "@/stores/session";
+import { useSmsCountdown } from "@/composables/useSmsCountdown";
 
 const router = useRouter();
 const route = useRoute();
 const session = useSessionStore();
 const loading = ref(false);
-const sending = ref(false);
 const agreed = ref(false);
 const form = reactive({
   phone: "",
@@ -18,61 +17,7 @@ const form = reactive({
   inviteCode: "",
 });
 
-/* --------- 验证码倒计时 --------- */
-const countDown = ref(0);
-let timer: ReturnType<typeof setInterval> | null = null;
-
-function startCountDown() {
-  countDown.value = 60;
-  timer = setInterval(() => {
-    countDown.value--;
-    if (countDown.value <= 0) {
-      clearInterval(timer!);
-      timer = null;
-    }
-  }, 1000);
-}
-
-onUnmounted(() => {
-  if (timer) {
-    clearInterval(timer);
-    timer = null;
-  }
-});
-
-/* --------- 业务方法 --------- */
-async function handleSendCode() {
-  if (!form.phone.trim()) {
-    showToast({ message: "请输入手机号", icon: "warning-o" });
-    return;
-  }
-
-  sending.value = true;
-  try {
-    await sendSmsCode(form.phone);
-    showToast({
-      message: "验证码已发送，开发环境请查看后端日志",
-      icon: "passed",
-    });
-    startCountDown();
-  } catch (error) {
-    showToast({
-      message: readError(error, "验证码发送失败，请稍后重试"),
-      icon: "cross",
-    });
-  } finally {
-    sending.value = false;
-  }
-}
-
-function readError(error: unknown, fallback: string) {
-  if (typeof error === "object" && error && "response" in error) {
-    const response = (error as { response?: { data?: { message?: string } } })
-      .response;
-    return response?.data?.message || fallback;
-  }
-  return fallback;
-}
+const { countDown, sending, handleSendCode, readError } = useSmsCountdown();
 
 async function handleRegister() {
   if (!agreed.value) {
@@ -138,7 +83,7 @@ async function handleRegister() {
               :disabled="sending || countDown > 0"
               :loading="sending"
               class="code-btn"
-              @click="handleSendCode"
+              @click="handleSendCode(form.phone)"
             >
               {{
                 countDown > 0