feat(rendering): add managed fullscreen stage recording seam

managed/GameScripts/RenderPipelineApiProbe.cs

@@ -21,6 +21,14 @@ namespace Gameplay
         }
     }
 
+    public sealed class ManagedPostProcessRenderPipelineProbeAsset : ScriptableRenderPipelineAsset
+    {
+        protected override ScriptableRenderPipeline CreatePipeline()
+        {
+            return new ManagedPostProcessRenderPipelineProbe();
+        }
+    }
+
     public sealed class ManagedRenderPipelineProbe : ScriptableRenderPipeline
     {
         public static int SupportsStageCallCount;
@@ -57,6 +65,26 @@ namespace Gameplay
         }
     }
 
+    public sealed class ManagedPostProcessRenderPipelineProbe : ScriptableRenderPipeline
+    {
+        protected override bool SupportsStageRenderGraph(
+            CameraFrameStage stage)
+        {
+            return stage == CameraFrameStage.PostProcess;
+        }
+
+        protected override bool RecordStageRenderGraph(
+            ScriptableRenderContext context)
+        {
+            return context != null &&
+                   context.stage == CameraFrameStage.PostProcess &&
+                   context.RecordBuiltinColorScaleFullscreenPass(
+                       new Vector4(1.10f, 0.95f, 0.90f, 1.0f)) &&
+                   context.RecordBuiltinColorScaleFullscreenPass(
+                       new Vector4(0.95f, 1.05f, 1.10f, 1.0f));
+        }
+    }
+
     public sealed class RenderPipelineApiProbe : MonoBehaviour
     {
         public bool InitialTypeWasNull;