更新提现和订单管理逻辑，新增用户佣金信息展示，优化提现审批流程以防止超额提现风险。同时，调整提现页面显示用户佣金详情，提升用户体验。重构API以支持新字段，确保数据一致性和准确性。

app/api/withdraw/route.ts

@@ -16,9 +16,12 @@ async function ensureWithdrawalsTable() {
         amount DECIMAL(10,2) NOT NULL,
         account_type VARCHAR(20) DEFAULT 'wechat',
         account VARCHAR(100),
-        status ENUM('pending', 'completed', 'failed') DEFAULT 'pending',
+        status ENUM('pending', 'processing', 'success', 'failed') DEFAULT 'pending',
+        wechat_openid VARCHAR(100),
+        transaction_id VARCHAR(100),
+        error_message VARCHAR(500),
         created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
-        completed_at TIMESTAMP NULL,
+        processed_at TIMESTAMP NULL,
         INDEX idx_user_id (user_id),
         INDEX idx_status (status)
       )