feat: 抖音扫码登录，自动填写 Cookie 和 SecUserId

新增 DyQrCodeService，调用 sso.douyin.com 二维码接口；
ConfigController 新增 qrcode/qrstatus/qrbind 三个接口；
前端账号列表每行增加"扫码登录"按钮，展示二维码弹窗并自动轮询绑定。

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

app/src/pages/cok/CookieTable.vue

@@ -4,7 +4,7 @@ import { FormInstance } from 'ant-design-vue';
 import { reactive, ref, onMounted } from 'vue';
 import dayjs from 'dayjs';
 import { Dayjs } from 'dayjs';
-import { EditFilled } from '@ant-design/icons-vue';
+import { EditFilled, QrcodeOutlined } from '@ant-design/icons-vue';
 import { useApiStore } from '@/store';
 import type { UnwrapRef } from 'vue';
 
@@ -220,6 +220,77 @@ const removeRow = (index) => {
   form.upSecUserIdsJson.splice(index, 1);
 };
 const rowCount = 4;
+
+// 扫码登录
+const showQrModal = ref(false);
+const qrToken = ref('');
+const qrBase64 = ref('');
+const qrStatus = ref(0); // 0=加载中, 1=待扫码, 2=已扫码待确认, 3=登录成功, -1=已过期
+const qrAccountId = ref('');
+const qrAccountName = ref('');
+const qrBindSuccess = ref(false);
+let qrPollingTimer: ReturnType<typeof setInterval> | null = null;
+
+const openQrModal = async (record: DataItem) => {
+  qrAccountId.value = record.id;
+  qrAccountName.value = record.userName;
+  qrStatus.value = 0;
+  qrBase64.value = '';
+  qrToken.value = '';
+  qrBindSuccess.value = false;
+  showQrModal.value = true;
+  try {
+    const res = await useApiStore().QrCodeGet();
+    if (res.code === 0) {
+      qrToken.value = res.data.token;
+      qrBase64.value = res.data.qrBase64;
+      qrStatus.value = 1;
+      startQrPolling();
+    } else {
+      qrStatus.value = -1;
+    }
+  } catch {
+    qrStatus.value = -1;
+  }
+};
+
+const startQrPolling = () => {
+  stopQrPolling();
+  qrPollingTimer = setInterval(async () => {
+    if (!qrToken.value) return;
+    try {
+      const res = await useApiStore().QrCodeStatus(qrToken.value);
+      if (res.code === 0) {
+        qrStatus.value = res.data.status;
+        if (res.data.status === 3) {
+          stopQrPolling();
+          const bindRes = await useApiStore().QrCodeBind(qrToken.value, qrAccountId.value);
+          if (bindRes.code === 0) {
+            qrBindSuccess.value = true;
+            setTimeout(() => {
+              showQrModal.value = false;
+              GetRecords();
+            }, 1500);
+          }
+        } else if (res.data.status === -1) {
+          stopQrPolling();
+        }
+      }
+    } catch { /* 忽略轮询网络错误 */ }
+  }, 2000);
+};
+
+const stopQrPolling = () => {
+  if (qrPollingTimer) {
+    clearInterval(qrPollingTimer);
+    qrPollingTimer = null;
+  }
+};
+
+const closeQrModal = () => {
+  stopQrPolling();
+  showQrModal.value = false;
+};
 </script>
 <template>
   <a-modal :title="form._isNew ? '新增Cookie' : '编辑Cookie'" v-model:visible="showModal" @ok="submit" @cancel="cancel" width="1000px">
@@ -374,6 +445,12 @@ const rowCount = 4;
           </template>
           删除
         </a-button>
+        <a-button type="link" @click="openQrModal(record)" size="small">
+          <template #icon>
+            <QrcodeOutlined />
+          </template>
+          扫码登录
+        </a-button>
       </template>
       <div v-else class="text-subtext">
         {{ text }}
@@ -381,6 +458,28 @@ const rowCount = 4;
     </template>
   </a-table>
 
+  <a-modal title="抖音扫码登录" :visible="showQrModal" :footer="null" @cancel="closeQrModal" width="360px">
+    <div style="text-align: center; padding: 16px 0;">
+      <div style="margin-bottom: 12px; color: #666;">账号：{{ qrAccountName }}</div>
+      <div v-if="qrStatus === 0" style="padding: 60px 0; color: #999;">加载中...</div>
+      <div v-else-if="qrStatus === -1" style="padding: 40px 0;">
+        <div style="color: #ff4d4f; margin-bottom: 12px;">二维码已过期</div>
+        <a-button @click="openQrModal({ id: qrAccountId, userName: qrAccountName })">刷新二维码</a-button>
+      </div>
+      <div v-else-if="qrBindSuccess" style="padding: 40px 0; color: #52c41a; font-size: 16px;">
+        登录成功，Cookie 已更新！
+      </div>
+      <div v-else>
+        <img v-if="qrBase64" :src="'data:image/png;base64,' + qrBase64" style="width: 200px; height: 200px;" />
+        <div style="margin-top: 12px; font-size: 13px; color: #666;">
+          <span v-if="qrStatus === 1">请用抖音 App 扫描二维码</span>
+          <span v-else-if="qrStatus === 2" style="color: #1890ff;">已扫码，请在手机上确认登录</span>
+          <span v-else-if="qrStatus === 3" style="color: #52c41a;">登录成功，正在保存...</span>
+        </div>
+      </div>
+    </div>
+  </a-modal>
+
   <a-modal title="Cookie 详情" :visible="showCookiesModal" style="width:1200px;" @cancel="showCookiesModal = false" @ok="showCookiesModal = false">
     <div class="cookie-content">
       {{ showCookiesData || '无Cookie数据' }}