fix(scale): page mail and batch roles

JobTrackerApi.Tests/CorrespondenceControllerTests.cs

@@ -85,4 +85,45 @@ public sealed class CorrespondenceControllerTests
         var otherResult = await new CorrespondenceController(otherDb).GetMessage(messageId, CancellationToken.None);
         Assert.IsType<NotFoundResult>(otherResult.Result);
     }
+
+    [Fact]
+    public async Task Paged_inbox_returns_every_owned_message_without_the_legacy_cap()
+    {
+        await using var db = TestHostFactory.CreateInMemoryDb();
+        var company = new Company { Name = "Scale fixture", OwnerUserId = "user-1" };
+        var otherCompany = new Company { Name = "Other tenant", OwnerUserId = "user-2" };
+        db.Companies.AddRange(company, otherCompany);
+        await db.SaveChangesAsync();
+        var job = new JobApplication { JobTitle = "Paged role", CompanyId = company.Id, OwnerUserId = "user-1" };
+        var otherJob = new JobApplication { JobTitle = "Private role", CompanyId = otherCompany.Id, OwnerUserId = "user-2" };
+        db.JobApplications.AddRange(job, otherJob);
+        await db.SaveChangesAsync();
+        db.Correspondences.AddRange(Enumerable.Range(1, 205).Select(index => new Correspondence
+        {
+            JobApplicationId = job.Id,
+            From = "Recruiter",
+            Subject = $"Message {index}",
+            Content = $"Content {index}",
+            Date = new DateTime(2026, 1, 1).AddMinutes(index)
+        }));
+        db.Correspondences.Add(new Correspondence
+        {
+            JobApplicationId = otherJob.Id,
+            From = "Other recruiter",
+            Subject = "Private message",
+            Content = "Must stay tenant isolated",
+            Date = new DateTime(2026, 2, 1)
+        });
+        await db.SaveChangesAsync();
+
+        var result = await new CorrespondenceController(db).GetInboxPage(null, null, null, 3, 100, CancellationToken.None);
+        var page = Assert.IsType<CorrespondenceController.CorrespondenceInboxPageDto>(Assert.IsType<OkObjectResult>(result.Result).Value);
+
+        Assert.Equal(205, page.Total);
+        Assert.Equal(3, page.TotalPages);
+        Assert.Equal(3, page.Page);
+        Assert.Equal(5, page.Items.Count);
+        Assert.Equal("Message 5", page.Items[0].Subject);
+        Assert.Equal("Message 1", page.Items[^1].Subject);
+    }
 }