회원 접속일과 콘텐츠 활동일을 분리한다

backend/src/routes/admin.js

@@ -976,7 +976,7 @@ router.delete('/custom-items', requireAdmin, async (req, res) => {
 router.get('/users', requireAdmin, async (req, res) => {
   const schema = z.object({
     q: z.string().trim().max(120).optional().default(''),
-    sort: z.enum(['recent', 'created', 'tierlists', 'followers', 'favorites']).optional().default('recent'),
+    sort: z.enum(['recent', 'lastLogin', 'created', 'tierlists', 'followers', 'favorites']).optional().default('recent'),
     direction: z.enum(['asc', 'desc']).optional().default('desc'),
   })
   const parsed = schema.safeParse(req.query)