feat(admin): show user subscription plan and token quota in user pages

Expose active subscription summary on user list and detail so operators can see plan type, total/used/remaining tokens without opening billing subscriptions.

Co-authored-by: Cursor <cursoragent@cursor.com>

server/app.mjs

@@ -290,13 +290,36 @@ export function createAdminApp(services) {
       role: typeof req.query.role === 'string' ? req.query.role.trim() : '',
       status: typeof req.query.status === 'string' ? req.query.status.trim() : '',
     });
+    if (subscriptionService?.getActiveSubscription && Array.isArray(result.users) && result.users.length) {
+      result.users = await Promise.all(
+        result.users.map(async (user) => {
+          if (user.role !== 'user') return user;
+          const sub = await subscriptionService.getActiveSubscription(user.id);
+          if (!sub) return { ...user, subscription: null };
+          return {
+            ...user,
+            subscription: {
+              planType: sub.planType,
+              status: sub.status,
+              periodTokensLimit: sub.periodTokensLimit,
+              periodTokensUsed: sub.periodTokensUsed,
+              expiresAt: sub.expiresAt,
+            },
+          };
+        }),
+      );
+    }
     res.json(result);
   });
 
   adminApi.get('/users/:userId', requireAdmin, async (req, res) => {
     const user = await userAuth.getUserPublic(req.params.userId);
     if (!user) return res.status(404).json({ message: '用户不存在' });
-    res.json({ user });
+    let subscription = null;
+    if (subscriptionService?.getActiveSubscription && user.role === 'user') {
+      subscription = await subscriptionService.getActiveSubscription(req.params.userId);
+    }
+    res.json({ user, subscription });
   });
 
   adminApi.get('/summary', requireAdmin, async (_req, res) => {