修复权限验证问题：普通用户无法访问后台管理页面

demo/src/main/resources/payments_fixed.sql

@@ -0,0 +1,24 @@
+-- 插入支付数据
+INSERT INTO payments (order_id, user_id, amount, currency, payment_method, status, external_transaction_id, paid_at, created_at) 
+SELECT 
+    o.id as order_id,
+    o.user_id,
+    o.total_amount as amount,
+    o.currency,
+    CASE 
+        WHEN RAND() < 0.6 THEN 'ALIPAY'
+        WHEN RAND() < 0.8 THEN 'WECHAT'
+        ELSE 'PAYPAL'
+    END as payment_method,
+    CASE 
+        WHEN o.status = 'COMPLETED' THEN 'COMPLETED'
+        WHEN o.status = 'CANCELLED' THEN 'CANCELLED'
+        ELSE 'PENDING'
+    END as status,
+    CONCAT('TXN_', UNIX_TIMESTAMP(o.created_at), '_', o.id) as external_transaction_id,
+    CASE 
+        WHEN o.status = 'COMPLETED' THEN DATE_ADD(o.created_at, INTERVAL FLOOR(RAND() * 30) MINUTE)
+        ELSE NULL
+    END as paid_at,
+    o.created_at
+FROM orders o;