update

src/Jiaowu.Api/Controllers/CampusRegistrationsController.cs

@@ -265,12 +265,33 @@ public sealed class CampusRegistrationsController(AppDbContext db, ICurrentUserD
 
     [HttpGet("applications")]
     [Authorize(Roles = Managers)]
-    public async Task<ActionResult> GetApplications([FromQuery] Guid? projectId, [FromQuery] CampusRegistrationApplicationStatus? status, CancellationToken ct)
+    public async Task<ActionResult> GetApplications(
+        [FromQuery] Guid? projectId,
+        [FromQuery] CampusRegistrationApplicationStatus? status,
+        [FromQuery] int? page,
+        [FromQuery] int? pageSize,
+        CancellationToken ct = default)
     {
         var source = ScopedApplications().AsNoTracking();
         if (projectId.HasValue) source = source.Where(x => x.ProjectId == projectId);
         if (status.HasValue) source = source.Where(x => x.Status == status);
-        return Ok(await source.OrderByDescending(x => x.CreatedAt).Select(ProjectApplicationDto()).ToListAsync(ct));
+
+        var ordered = source
+            .OrderByDescending(x => x.CreatedAt)
+            .ThenByDescending(x => x.Id);
+        if (!page.HasValue && !pageSize.HasValue)
+            return Ok(await ordered.Select(ProjectApplicationDto()).ToListAsync(ct));
+
+        var normalizedPage = Math.Max(1, page ?? 1);
+        var normalizedPageSize = Math.Clamp(pageSize ?? 20, 1, 100);
+
+        var total = await source.CountAsync(ct);
+        var items = await ordered
+            .Skip((normalizedPage - 1) * normalizedPageSize)
+            .Take(normalizedPageSize)
+            .Select(ProjectApplicationDto())
+            .ToListAsync(ct);
+        return Ok(new PagedResult<object>(items, total, normalizedPage, normalizedPageSize));
     }
 
     [HttpGet("applications/export.xlsx")]