fix(central-ui): resolve CentralUI-015..019 — pager windowing, logout CSRF, narrowed catch blocks, coverage; CentralUI-015 re-triaged Won't Fix

tests/ScadaLink.CentralUI.Tests/TopologyPageTests.cs

@@ -54,6 +54,9 @@ public class TopologyPageTests : BunitContext
             OperationLockTimeout = TimeSpan.FromSeconds(5)
         }));
         Services.AddSingleton<ILogger<DeploymentService>>(NullLogger<DeploymentService>.Instance);
+        // DeploymentService gained a DiffService dependency (DeploymentManager
+        // contract change); register it so the page's DI graph resolves.
+        Services.AddScoped<ScadaLink.TemplateEngine.Flattening.DiffService>();
         Services.AddScoped<DeploymentService>();
         Services.AddScoped<AreaService>();
         Services.AddScoped<InstanceService>();