feat(distribution): 通道费改主站承担，并按冷却期自动释放结算

利润不再扣支付通道费；站点可配置结算冷却期，到期自动入账，已释放后退款从收款站钱包回冲。同时修复当日自动批次无法追加、三方回冲打错钱包，以及测试库自增重置被 MySQL 统计缓存跳过的问题。

Co-authored-by: Cursor <cursoragent@cursor.com>

distribution-admin/src/pages/Wallet.tsx

@@ -24,6 +24,7 @@ import {
   DollarCircleOutlined,
   LockOutlined,
   CheckCircleOutlined,
+  HourglassOutlined,
 } from '@ant-design/icons'
 import {
   fetchSiteWallet,
@@ -193,7 +194,7 @@ export default function Wallet() {
       </div>
 
       <Row gutter={16}>
-        <Col span={6}>
+        <Col flex="1">
           <Card bordered={false} style={{ background: 'linear-gradient(135deg, #1677ff 0%, #0958d9 100%)', color: '#fff' }}>
             <Statistic
               title={<span style={{ color: 'rgba(255,255,255,0.85)' }}>可提现余额</span>}
@@ -204,7 +205,18 @@ export default function Wallet() {
             />
           </Card>
         </Col>
-        <Col span={6}>
+        <Col flex="1">
+          <Card bordered={false} style={{ background: '#fafafa' }}>
+            <Statistic
+              title="待释放收益 (订单完成冷却中)"
+              value={((wallet?.pending_release_cent ?? 0) / 100).toFixed(2)}
+              prefix={<HourglassOutlined style={{ color: '#1677ff' }} />}
+              suffix="元"
+              valueStyle={{ color: '#1677ff' }}
+            />
+          </Card>
+        </Col>
+        <Col flex="1">
           <Card bordered={false} style={{ background: '#fafafa' }}>
             <Statistic
               title="冻结中余额 (提现审核中)"
@@ -215,7 +227,7 @@ export default function Wallet() {
             />
           </Card>
         </Col>
-        <Col span={6}>
+        <Col flex="1">
           <Card bordered={false} style={{ background: '#fafafa' }}>
             <Statistic
               title="累计已结算收益"
@@ -226,7 +238,7 @@ export default function Wallet() {
             />
           </Card>
         </Col>
-        <Col span={6}>
+        <Col flex="1">
           <Card bordered={false} style={{ background: '#fafafa' }}>
             <Statistic
               title="累计已成功提现"