feat(scan-checkin-detail): 新增签到位置权限确认弹窗流程

为扫码签到功能新增位置权限确认弹窗流程，当活动开启位置验证时弹出弹窗请求用户授权，处理用户的同意或拒绝操作，拒绝时显示提示并终止签到流程。

@@ -47,11 +47,39 @@
         {{ actionButtonText }}
       </nut-button>
     </view>
+
+    <nut-dialog v-model:visible="showLocationConfirmDialog" title="位置权限申请">
+      <template #default>
+        <view class="text-gray-700 leading-loose text-sm text-left">
+          {{ locationConfirmContent }}
+        </view>
+      </template>
+      <template #footer>
+        <nut-row :gutter="10">
+          <nut-col :span="12">
+            <nut-button @click="handleLocationConfirmCancel" type="default" size="normal" block>
+              暂不开启
+            </nut-button>
+          </nut-col>
+          <nut-col :span="12">
+            <nut-button
+              @click="handleLocationConfirmAgree"
+              type="primary"
+              size="normal"
+              color="#DF7750"
+              block
+            >
+              同意并继续
+            </nut-button>
+          </nut-col>
+        </nut-row>
+      </template>
+    </nut-dialog>
   </view>
 </template>
 
 <script setup>
-import { reactive, computed } from 'vue'
+import { reactive, computed, ref } from 'vue'
 import Taro, { useLoad } from '@tarojs/taro'
 import './index.less'
 import RichTextRenderer from '@/components/RichTextRenderer.vue'
@@ -99,6 +127,10 @@ const actionButtonText = computed(() =>
   detail.entryMode === 'direct_submit' ? '点击打卡' : '扫码打卡'
 )
 const isApiSuccess = code => Number(code) === 1
+const showLocationConfirmDialog = ref(false)
+const pendingLocationConfirmResolver = ref(null)
+const locationConfirmContent =
+  '为了完成扫码打卡，我们需要获取您的位置信息，用于验证您是否在当前打卡点范围内。我们会严格保护您的位置隐私，仅用于本次扫码打卡。'
 
 const normalizedRichTextContent = computed(() => {
   const content = detail.discountContentRaw
@@ -195,6 +227,46 @@ const ensureOpenid = async () => {
   return openid
 }
 
+const waitForLocationConfirm = async () => {
+  if (detail.geoEnabled !== true) {
+    return true
+  }
+
+  const authSetting = await Taro.getSetting()
+  const hasLocationPermission = authSetting?.authSetting?.['scope.userLocation']
+
+  if (hasLocationPermission === true) {
+    return true
+  }
+
+  showLocationConfirmDialog.value = true
+
+  return new Promise(resolve => {
+    pendingLocationConfirmResolver.value = resolve
+  })
+}
+
+const resolveLocationConfirm = confirmed => {
+  showLocationConfirmDialog.value = false
+
+  if (pendingLocationConfirmResolver.value) {
+    pendingLocationConfirmResolver.value(confirmed)
+    pendingLocationConfirmResolver.value = null
+  }
+}
+
+const handleLocationConfirmCancel = () => {
+  Taro.showToast({
+    title: '需要位置权限才能参与活动',
+    icon: 'none',
+  })
+  resolveLocationConfirm(false)
+}
+
+const handleLocationConfirmAgree = () => {
+  resolveLocationConfirm(true)
+}
+
 const handleScanCheckin = async () => {
   detail.scanSubmitting = true
 
@@ -208,6 +280,13 @@ const handleScanCheckin = async () => {
       return
     }
 
+    const hasConfirmedLocation = await waitForLocationConfirm()
+
+    if (!hasConfirmedLocation) {
+      detail.scanSubmitting = false
+      return
+    }
+
     // 点击扫码时重新静默拉一次当前位置，避免依赖进入页面时的旧定位缓存。
     const rangeCheck = await verifyCheckinRangeWithCurrentLocation({
       geoEnabled: detail.geoEnabled,