feat: 用户订阅列表显示节点分组名，限速详情显示起止时间

- UserSubscribe 类型新增 node_group_id/node_group_name 字段
- UserSubscribeDetail 类型新增 throttle_start/throttle_end/node_group_id/node_group_name 字段
- 订阅列表表格新增「节点分组」列
- 限速卡片新增限速窗口起止时间显示

Co-Authored-By: claude-flow <ruv@ruv.net>

apps/admin/src/sections/user/user-subscription/index.tsx

@@ -329,6 +329,11 @@ export default function UserSubscription({ userId }: { userId: number }) {
                 : t("permanent", "Permanent");
             },
           },
+          {
+            accessorKey: "node_group_name",
+            header: t("nodeGroup", "Node Group"),
+            cell: ({ row }) => row.original.node_group_name || "-",
+          },
           {
             accessorKey: "created_at",
             header: t("createdAt", "Created At"),

apps/admin/src/sections/user/user-subscription/subscription-detail.tsx

@@ -86,6 +86,12 @@ function SpeedLimitCard({ subscriptionId }: { subscriptionId: number }) {
             {detail.throttle_rule}
           </p>
         )}
+        {isThrottled && detail.throttle_start && detail.throttle_end && (
+          <p className="text-muted-foreground text-xs">
+            {formatDate(detail.throttle_start)} ~{" "}
+            {formatDate(detail.throttle_end)}
+          </p>
+        )}
       </div>
     </div>
   );

packages/ui/src/services/admin/typings.d.ts

@@ -2504,6 +2504,8 @@ declare namespace API {
     token: string;
     status: number;
     short: string;
+    node_group_id?: number;
+    node_group_name?: string;
     created_at: number;
     updated_at: number;
   };
@@ -2526,6 +2528,10 @@ declare namespace API {
     effective_speed: number;
     is_throttled: boolean;
     throttle_rule?: string;
+    throttle_start?: number;
+    throttle_end?: number;
+    node_group_id?: number;
+    node_group_name?: string;
     created_at: number;
     updated_at: number;
   };