refactor(net): converge live session state reset

tests/AcDream.App.Tests/Rendering/CameraControllerTests.cs

@@ -92,4 +92,33 @@ public class CameraControllerTests
             CameraDiagnostics.UseRetailChaseCamera = saved;
         }
     }
+
+    [Fact]
+    public void ExitChaseMode_AlreadyOfflinePreservesOrbitCamera()
+    {
+        var orbit = new OrbitCamera();
+        var ctl = new CameraController(orbit, new FlyCamera());
+
+        ctl.ExitChaseMode();
+
+        Assert.Same(orbit, ctl.Active);
+        Assert.False(ctl.IsFlyMode);
+        Assert.False(ctl.IsChaseMode);
+    }
+
+    [Fact]
+    public void ExitChaseMode_AfterChaseToFlyReleasesRetainedSessionCameras()
+    {
+        var (ctl, _, _) = MakeChaseFixture();
+        ctl.ToggleFly();
+        Assert.True(ctl.IsFlyMode);
+        Assert.NotNull(ctl.Chase);
+        Assert.NotNull(ctl.RetailChase);
+
+        ctl.ExitChaseMode();
+
+        Assert.True(ctl.IsFlyMode);
+        Assert.Null(ctl.Chase);
+        Assert.Null(ctl.RetailChase);
+    }
 }