refactor(input): own pointer and callback lifetime

Move camera pointer, framebuffer resize, and retained/devtools input edges behind focused reversible owners. Preserve input priority while making shutdown deactivate callbacks before live-session retirement and retry physical detach without stranding transport teardown.

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

@@ -0,0 +1,76 @@
+using AcDream.App.Input;
+using AcDream.App.Rendering;
+
+namespace AcDream.App.Tests.Rendering;
+
+public sealed class FramebufferResizeControllerTests
+{
+    [Fact]
+    public void ResizePreservesViewportAspectCameraDevToolsOrder()
+    {
+        var calls = new List<string>();
+        var aspect = new ViewportAspectState();
+        var owner = new FramebufferResizeController(aspect);
+        owner.BindViewport(new Viewport(calls));
+        owner.BindCamera(new Camera(calls));
+        owner.BindDevTools(new DevTools(calls));
+
+        owner.Resize(1600, 900);
+
+        Assert.Equal(["viewport:1600x900", "camera:1.778", "devtools:1600x900"], calls);
+        Assert.Equal(1600f / 900f, aspect.Aspect, 5);
+    }
+
+    [Theory]
+    [InlineData(0, 720)]
+    [InlineData(1280, 0)]
+    [InlineData(-1, 720)]
+    [InlineData(1280, -1)]
+    public void NonPositiveFramebufferIsRejectedWithoutMutatingTargets(int width, int height)
+    {
+        var calls = new List<string>();
+        var aspect = new ViewportAspectState();
+        var owner = new FramebufferResizeController(aspect);
+        owner.BindViewport(new Viewport(calls));
+        owner.BindCamera(new Camera(calls));
+        owner.BindDevTools(new DevTools(calls));
+
+        owner.Resize(width, height);
+
+        Assert.Empty(calls);
+        Assert.Equal(16f / 9f, aspect.Aspect);
+    }
+
+    [Fact]
+    public void LateBindingDoesNotReplayEarlierResize()
+    {
+        var calls = new List<string>();
+        var owner = new FramebufferResizeController(new ViewportAspectState());
+        owner.Resize(1024, 768);
+
+        owner.BindViewport(new Viewport(calls));
+        owner.BindCamera(new Camera(calls));
+        owner.BindDevTools(new DevTools(calls));
+
+        Assert.Empty(calls);
+        owner.Resize(800, 600);
+        Assert.Equal(["viewport:800x600", "camera:1.333", "devtools:800x600"], calls);
+    }
+
+    private sealed class Viewport(List<string> calls) : IFramebufferViewportTarget
+    {
+        public void ResizeViewport(int width, int height) =>
+            calls.Add($"viewport:{width}x{height}");
+    }
+
+    private sealed class Camera(List<string> calls) : IFramebufferCameraTarget
+    {
+        public void SetAspect(float aspect) => calls.Add($"camera:{aspect:F3}");
+    }
+
+    private sealed class DevTools(List<string> calls) : IFramebufferDevToolsTarget
+    {
+        public void ResetLayout(int width, int height) =>
+            calls.Add($"devtools:{width}x{height}");
+    }
+}

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

@@ -99,7 +99,13 @@ public sealed class GameWindowRenderLeafCompositionTests
         Assert.Contains("new AcDream.App.Rendering.PrivatePresentationRenderer(", source);
         Assert.Contains("new AcDream.App.Rendering.RenderFrameOrchestrator(", source);
         Assert.Contains("new DisplayFramePacingController(", source);
-        Assert.Contains("_inputCapture.WantCaptureMouse", source);
+        string pointerSource = File.ReadAllText(Path.Combine(
+            FindRepoRoot(),
+            "src",
+            "AcDream.App",
+            "Input",
+            "CameraPointerInputController.cs"));
+        Assert.Contains("_capture.WantCaptureMouse", pointerSource);
     }
 
     [Fact]

tests/AcDream.App.Tests/Rendering/GameWindowSlice8BoundaryTests.cs

@@ -54,14 +54,18 @@ public sealed class GameWindowSlice8BoundaryTests
             body,
             "_gl = GL.GetApi(_window!);",
             "_input = _window!.CreateInput();",
-            "_kbSource = new AcDream.App.Input.SilkKeyboardSource(firstKb);",
-            "_mouseSource = new AcDream.App.Input.SilkMouseSource(",
-            "_inputDispatcher = new AcDream.UI.Abstractions.Input.InputDispatcher(",
+            "_kbSource = AcDream.App.Input.SilkKeyboardSource.CreateDetached(",
+            "_kbSource.Attach();",
+            "_mouseSource = AcDream.App.Input.SilkMouseSource.CreateDetached(",
+            "_mouseSource.Attach();",
+            "_inputDispatcher = AcDream.UI.Abstractions.Input.InputDispatcher.CreateDetached(",
+            "_inputDispatcher.Attach();",
             "_movementInput.Bind(_inputDispatcher);",
             "_cameraInput.Bind(_inputDispatcher);",
             "_inputDispatcher.Fired += OnInputAction;",
-            "mouse.MouseMove +=",
             "_cameraController = new CameraController(orbit, fly);",
+            "_cameraPointerInput = AcDream.App.Input.CameraPointerInputController.Create(",
+            "_cameraPointerInput.AttachRaw();",
             "_dats = RuntimeDatCollectionFactory.OpenReadOnly(_datDir);",
             "LoadAndApplyPersistedSettings();",
             "_uiHost = new AcDream.App.UI.UiHost(",
@@ -74,6 +78,16 @@ public sealed class GameWindowSlice8BoundaryTests
             "_liveSessionHost = CreateLiveSessionHost();",
             "_liveSessionHost.Start(_options)");
         Assert.Equal(1, CountOccurrences(body, "_liveSessionHost.Start(_options)"));
+        Assert.Contains("if (firstKb is not null)", body, StringComparison.Ordinal);
+        Assert.Contains("if (firstMouse is not null)", body, StringComparison.Ordinal);
+        Assert.Contains(
+            "if (_kbSource is not null && _mouseSource is not null)",
+            body,
+            StringComparison.Ordinal);
+        Assert.DoesNotContain(
+            "if (firstKb is not null && firstMouse is not null)",
+            body,
+            StringComparison.Ordinal);
         int start = body.IndexOf("_liveSessionHost.Start(_options)", StringComparison.Ordinal);
         string postStart = body[start..];
         Assert.Contains("switch (liveStart.Status)", postStart, StringComparison.Ordinal);
@@ -144,20 +158,28 @@ public sealed class GameWindowSlice8BoundaryTests
     }
 
     [Fact]
-    public void FramebufferResize_PreservesViewportCameraAndDevtoolsOrder()
+    public void FramebufferResize_IsOneTypedOwnerHandoff()
     {
+        string load = MethodBody(
+            "private void OnLoad()",
+            "private AcDream.App.Net.LiveSessionHost");
         string body = MethodBody(
             "private void OnFramebufferResize(",
             "private void ApplyDisplayWindowState(");
 
+        Assert.Contains("=> _framebufferResize.Resize(newSize);", body, StringComparison.Ordinal);
+        Assert.DoesNotContain("Viewport(", body, StringComparison.Ordinal);
+        Assert.DoesNotContain("SetAspect(", body, StringComparison.Ordinal);
+        Assert.DoesNotContain("ResetLayout(", body, StringComparison.Ordinal);
         AssertAppearsInOrder(
-            body,
-            "if (newSize.X <= 0 || newSize.Y <= 0) return;",
-            "_gl?.Viewport(",
-            "_viewportAspect.Update(",
-            "_cameraController?.SetAspect(",
-            "_devToolsFramePresenter?.ResetLayout(");
-        Assert.DoesNotContain("_uiHost", body, StringComparison.Ordinal);
+            load,
+            "_framebufferResize.BindViewport(",
+            "_framebufferResize.BindCamera(",
+            "_framebufferResize.Resize(_window!.FramebufferSize);");
+        Assert.DoesNotContain(
+            "_viewportAspect.Update(_window",
+            load,
+            StringComparison.Ordinal);
     }
 
     [Fact]
@@ -167,7 +189,7 @@ public sealed class GameWindowSlice8BoundaryTests
         string update = Slice(
             source,
             "private void OnUpdate(double dt)",
-            "private void OnCameraModeChanged(");
+            "private void OnRender(double deltaSeconds)");
         string render = Slice(
             source,
             "private void OnRender(double deltaSeconds)",
@@ -189,7 +211,10 @@ public sealed class GameWindowSlice8BoundaryTests
             "_renderFrameOrchestrator!.Render(",
             "new AcDream.App.Rendering.RenderFrameInput(");
         Assert.DoesNotContain("FramebufferSize", render, StringComparison.Ordinal);
-        AssertAppearsInOrder(focus, "if (!focused)", "_gameplayInputFrame?.EndMouseLook();");
+        Assert.Contains(
+            "=> _cameraPointerInput?.HandleFocusChanged(focused);",
+            focus,
+            StringComparison.Ordinal);
         AssertAppearsInOrder(
             close,
             "_hostQuiescence.StopAccepting();",
@@ -212,7 +237,9 @@ public sealed class GameWindowSlice8BoundaryTests
 
         string[] stages =
         [
+            "new ResourceShutdownStage(\"input callback deactivation\"",
             "new ResourceShutdownStage(\"session lifetime\"",
+            "new ResourceShutdownStage(\"input callback detach\"",
             "new ResourceShutdownStage(\"frame borrowers\"",
             "new ResourceShutdownStage(\"session dependents\"",
             "new ResourceShutdownStage(\"live entities\"",
@@ -236,6 +263,17 @@ public sealed class GameWindowSlice8BoundaryTests
             "binding.Dispose();",
             "if (!binding.IsDisposalComplete)",
             "_windowCallbacks = null;");
+        AssertAppearsInOrder(
+            manifest,
+            "new(\"camera pointer\", () => _cameraPointerInput?.Deactivate())",
+            "new ResourceShutdownStage(\"session lifetime\"",
+            "controller.Dispose();",
+            "new ResourceShutdownStage(\"input callback detach\"",
+            "pointer.Dispose();",
+            "new ResourceShutdownStage(\"session dependents\"",
+            "pointer.ReleaseMouseLookAfterSessionRetirement();",
+            "pointer.UnbindGameplayFrame(gameplayFrame);",
+            "_cameraPointerInput = null;");
         AssertAppearsInOrder(
             dispose,
             "CompleteShutdown();",