feat(admin): 用户管理新增用户明细抽屉，聚合资金与交易全链路数据

- 用户管理操作列新增「明细」入口，抽屉按权限提供 5 个 Tab：钱包流水、订单记录、提现记录、邀请返利、支付记录
- 后端：后台订单列表新增 user_id 精确过滤（owner_id / renter_id），邀请关系与返利流水新增 inviter_id / invitee_id 过滤
- 修复：返利流水的「被邀请人手机号」筛选此前后端未实现，一直无效
- 资金流水页、支付记录页支持 ?user_id= 预填，可从明细直达
- 顺带将 invitation/dto.go、repository.go 中两处既有缩进错位按 gofmt 规整

frontend/src/features/admin/components/AdminUserDetailDrawer.css

@@ -0,0 +1,95 @@
+.user-detail {
+  display: flex;
+  flex-direction: column;
+  gap: 16px;
+}
+
+.user-detail__head {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 16px;
+  align-items: center;
+  justify-content: space-between;
+  padding: 16px;
+  border: 1px solid #e5e7eb;
+  border-radius: 10px;
+  background: #f8fafc;
+}
+
+.user-detail__identity {
+  display: grid;
+  gap: 4px;
+}
+
+.user-detail__identity strong {
+  color: #0f172a;
+  font-size: 18px;
+}
+
+.user-detail__identity span {
+  color: #475569;
+  font-size: 14px;
+  font-variant-numeric: tabular-nums;
+}
+
+.user-detail__identity small {
+  color: #94a3b8;
+  font-size: 12px;
+}
+
+.user-detail__metrics {
+  display: grid;
+  grid-template-columns: repeat(4, minmax(96px, 1fr));
+  gap: 12px;
+}
+
+.user-detail__metrics > div {
+  display: grid;
+  gap: 4px;
+}
+
+.user-detail__metrics span {
+  color: #64748b;
+  font-size: 12px;
+}
+
+.user-detail__metrics strong {
+  color: #0f172a;
+  font-size: 15px;
+  font-variant-numeric: tabular-nums;
+}
+
+.tab-toolbar {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  margin-bottom: 10px;
+  color: #64748b;
+  font-size: 13px;
+}
+
+.amount-in {
+  color: #16a34a;
+  font-variant-numeric: tabular-nums;
+  font-weight: 600;
+}
+
+.amount-out {
+  color: #dc2626;
+  font-variant-numeric: tabular-nums;
+  font-weight: 600;
+}
+
+.role-tag {
+  margin-right: 4px;
+}
+
+.cell-sub {
+  color: #64748b;
+  font-size: 12px;
+  font-variant-numeric: tabular-nums;
+}
+
+.tab-toolbar :deep(.el-radio-group) {
+  flex-wrap: nowrap;
+}