fix: 流量保留两位小数

docs/资产详情流量.md

@@ -0,0 +1,34 @@
+/api/admin/assets/862639075995821/current-package
+响应:
+{
+"code": 0,
+"data": {
+"package_usage_id": 2,
+"package_id": 2,
+"package_name": "年套餐",
+"package_type": "formal",
+"order_id": 2,
+"order_no": "ORD20260428105811360190",
+"usage_type": "device",
+"status": 1,
+"status_name": "生效中",
+"real_total_mb": 1024000,
+"real_used_mb": 7848,
+"virtual_total_mb": 716800,
+"virtual_used_mb": 11211.425208,
+"reduction_pct": 0.42857100000000004,
+"enable_virtual_data": true,
+"activated_at": "2026-04-28T10:58:11.377734+08:00",
+"expires_at": "2027-04-30T23:59:59+08:00",
+"priority": 1,
+"paid_amount": 19900,
+"created_at": "2026-04-28T10:58:11.554516+08:00"
+},
+"msg": "success",
+"timestamp": "2026-05-08T10:00:55+08:00"
+}
+资产详情里面的,当前生效套餐和套餐列表里面的流量
+
+总流量用的就是real_total_mb, 
+已使用: 如果 enable_virtual_data: true 显示:virtual_used_mb false:real_used_mb, 
+剩余: 总流量-已使用