fix(distribution): 修复收号站订单详情权限、专属支付通道路由、大盘统计与仲裁积分隔离

- 修复 FindOrder 在收号站模式(two_party_distributor_receive / three_party)下的 403 权限判定，放行参与方站点成员并精准计算收益
- 串联 distribution_site_payment_channels 至 payment.Start 核心支付发起流程，分销订单优先使用绑定的专属商户通道
- 修复数据大盘 GetDashboardAnalytics 趋势中 ReceivedCount 恒为 0 的问题，并对齐今日订单与 GMV 统计
- 修复 dispute/arbitration.go 仲裁完成时向分销租客发放成长积分的泄漏风险
- 提现管理新增 distribution_site_name/distribution_site_code 字段并在后台列表与详情弹窗中区分展示分销站
- GetPublicSiteInfo 增加 X-Distribution-Site-Code 请求头兜底支持

frontend/src/features/admin/api/adminWithdrawal.ts

@@ -7,6 +7,9 @@ export interface WithdrawalDetail {
   id: number
   withdraw_no: string
   user_id: number
+  distribution_site_id?: number
+  distribution_site_name?: string
+  distribution_site_code?: string
   user_nickname: string
   user_phone: string
   amount_cent: number

frontend/src/features/admin/components/WithdrawalDetailDialog.vue

@@ -148,9 +148,20 @@ function accountTypeLabel(type: string) {
     <div v-if="withdrawal" class="withdrawal-detail">
       <!-- 基本信息 -->
       <el-descriptions :column="2" border>
-        <el-descriptions-item label="提现单号" :span="2">
+        <el-descriptions-item label="提现单号">
           {{ withdrawal.withdraw_no }}
         </el-descriptions-item>
+        <el-descriptions-item label="所属站点">
+          <el-tag v-if="withdrawal.distribution_site_id" type="warning" size="small">
+            {{
+              withdrawal.distribution_site_name || `分销站点 #${withdrawal.distribution_site_id}`
+            }}
+            <template v-if="withdrawal.distribution_site_code">
+              ({{ withdrawal.distribution_site_code }})</template
+            >
+          </el-tag>
+          <el-tag v-else type="info" size="small">主站</el-tag>
+        </el-descriptions-item>
         <el-descriptions-item label="状态">
           <el-tag :type="statusType(withdrawal.status)">
             {{ statusLabel(withdrawal.status) }}

frontend/src/features/admin/views/AdminWithdrawalsView.vue

@@ -372,7 +372,18 @@ function money(cent: number | undefined | null) {
             <template #default="{ row }">
               <div class="withdraw-no-cell">
                 <span class="mono-code">{{ row.withdraw_no }}</span>
-                <small class="id-tag">#ID: {{ row.id }}</small>
+                <div style="display: flex; align-items: center; gap: 6px">
+                  <small class="id-tag">#ID: {{ row.id }}</small>
+                  <el-tag
+                    v-if="row.distribution_site_id"
+                    size="small"
+                    type="warning"
+                    effect="light"
+                  >
+                    {{ row.distribution_site_name || `分站 #${row.distribution_site_id}` }}
+                  </el-tag>
+                  <el-tag v-else size="small" type="info" effect="plain"> 主站 </el-tag>
+                </div>
               </div>
             </template>
           </el-table-column>