Update payroll cap to enhance staffing flexibility and adjust related documentation and tests

- Increased the `MonthlyPayrollCap` from 40,000 to 100,000, allowing for greater hiring capacity and subject assignments.
- Updated relevant documentation to reflect the new payroll cap and its implications for staffing.
- Adjusted tests to validate the new payroll cap and ensure proper functionality in staffing scenarios, including allocation and remaining payroll calculations.
- Enhanced styling in the UI to accommodate the changes in management screens.

tests/HSchool.AppHost.Tests/StaffingApiTests.cs

@@ -26,9 +26,9 @@ public class StaffingApiTests(AppHostFixture fixture)
 
         var staffing = await GetStaffingAsync(client, school.Id);
 
-        Assert.Equal(40_000f, staffing.Allocated);
+        Assert.Equal(100_000f, staffing.Allocated);
         Assert.Equal(0f, staffing.Payroll);
-        Assert.Equal(40_000f, staffing.Remaining);
+        Assert.Equal(100_000f, staffing.Remaining);
         Assert.Equal(12, staffing.Applicants.Count);
         Assert.Empty(staffing.Staff);
         Assert.Contains(staffing.Uncovered, subject => subject.DefName == "Mathematics");
@@ -121,14 +121,13 @@ public class StaffingApiTests(AppHostFixture fixture)
     }
 
     [Fact]
-    public async Task Hire_PastTheCap_IsRejectedWithTheNumbers()
+    public async Task Hire_IdlePool_FitsUnderTheCap()
     {
         using var client = fixture.App.CreateHttpClient("server");
         await SchoolApiTests.ResetAsync(client);
         var school = await SchoolApiTests.CreateAsync(client, "Штат предел", Start);
 
         var staffing = await GetStaffingAsync(client, school.Id);
-        ProblemResponse? problem = null;
         while (staffing.Applicants.Count > 0)
         {
             var applicant = staffing.Applicants[0];
@@ -136,22 +135,15 @@ public class StaffingApiTests(AppHostFixture fixture)
                 $"/api/schools/{school.Id}/staff/hire",
                 new { personId = applicant.Id, position = "Teacher" },
                 TestContext.Current.CancellationToken);
-            if (response.StatusCode == HttpStatusCode.Conflict)
-            {
-                problem = await response.Content.ReadFromJsonAsync<ProblemResponse>(TestContext.Current.CancellationToken);
-                break;
-            }
-
             response.EnsureSuccessStatusCode();
             staffing = await response.Content.ReadFromJsonAsync<StaffingResponse>(TestContext.Current.CancellationToken);
             Assert.NotNull(staffing);
         }
 
-        Assert.Equal("payroll-exceeded", problem?.Code);
-        Assert.Equal(40_000f, problem?.Allocated);
-        Assert.True(problem?.Payroll <= 40_000f);
-        Assert.True(problem?.Attempted > 40_000f);
-        Assert.True(staffing.Staff.Count >= 1);
+        Assert.Equal(100_000f, staffing.Allocated);
+        Assert.True(staffing.Payroll > 0f);
+        Assert.True(staffing.Payroll <= staffing.Allocated);
+        Assert.Equal(12, staffing.Staff.Count);
     }
 
     [Fact]