Add selection outline post-process setup (material pending)

- PostProcessComponent on Pawn (unbound, applies to entire scene)
- Auto-loads M_PS_Editor_SelectionOutline material at BeginPlay
- Removed debug bounding box from Tick
- Custom depth stencil already toggled on selected actors
- Material needs to be created in UE editor (edge detection on CustomStencil)
- Instructions: use TexCoord + Constant2Vector offsets for 4-neighbor sampling

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Unreal/Plugins/PS_Editor/Source/PS_Editor/GameMode/PS_Editor_Pawn.cpp

@@ -1,6 +1,7 @@
 #include "PS_Editor_Pawn.h"
 #include "Camera/CameraComponent.h"
 #include "GameFramework/SpringArmComponent.h"
+#include "Components/PostProcessComponent.h"
 #include "EnhancedInputComponent.h"
 #include "EnhancedInputSubsystems.h"
 #include "InputAction.h"
@@ -31,11 +32,29 @@ APS_Editor_Pawn::APS_Editor_Pawn()
 
 	Camera = CreateDefaultSubobject<UCameraComponent>(TEXT("Camera"));
 	Camera->SetupAttachment(SpringArm);
+
+	OutlinePostProcess = CreateDefaultSubobject<UPostProcessComponent>(TEXT("OutlinePostProcess"));
+	OutlinePostProcess->SetupAttachment(RootScene);
+	OutlinePostProcess->bUnbound = true; // Apply to entire scene
 }
 
 void APS_Editor_Pawn::BeginPlay()
 {
 	Super::BeginPlay();
+
+	// Load outline post-process material
+	UMaterialInterface* OutlineMat = LoadObject<UMaterialInterface>(
+		nullptr, TEXT("/PS_Editor/M_PS_Editor_SelectionOutline.M_PS_Editor_SelectionOutline"));
+	if (OutlineMat && OutlinePostProcess)
+	{
+		OutlinePostProcess->Settings.WeightedBlendables.Array.Add(FWeightedBlendable(1.0f, OutlineMat));
+		UE_LOG(LogTemp, Log, TEXT("PS_Editor: Selection outline material loaded"));
+	}
+	else
+	{
+		UE_LOG(LogTemp, Warning, TEXT("PS_Editor: Outline material /PS_Editor/M_PS_Editor_SelectionOutline not found. "
+			"Create a Post Process material in Plugins/PS_Editor/Content/"));
+	}
 }
 
 void APS_Editor_Pawn::Tick(float DeltaTime)
@@ -53,22 +72,6 @@ void APS_Editor_Pawn::Tick(float DeltaTime)
 			UpdateGizmoHover();
 		}
 
-		// Draw debug bounding box around selected actors
-		if (APS_Editor_PlayerController* EditorPC = Cast<APS_Editor_PlayerController>(PC))
-		{
-			if (UPS_Editor_SelectionManager* SM = EditorPC->GetSelectionManager())
-			{
-				for (const TWeakObjectPtr<AActor>& Weak : SM->GetSelectedActors())
-				{
-					if (AActor* Actor = Weak.Get())
-					{
-						FVector Origin, Extent;
-						Actor->GetActorBounds(false, Origin, Extent);
-						DrawDebugBox(GetWorld(), Origin, Extent, FColor::Orange, false, -1.0f, 0, 2.0f);
-					}
-				}
-			}
-		}
 	}
 }
 

Unreal/Plugins/PS_Editor/Source/PS_Editor/GameMode/PS_Editor_Pawn.h

@@ -8,6 +8,7 @@
 
 class UCameraComponent;
 class USpringArmComponent;
+class UPostProcessComponent;
 class UInputAction;
 class UInputMappingContext;
 
@@ -73,6 +74,9 @@ protected:
 	UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = "Camera")
 	TObjectPtr<UCameraComponent> Camera;
 
+	UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = "Camera")
+	TObjectPtr<UPostProcessComponent> OutlinePostProcess;
+
 	// ---- Camera Settings ----
 
 	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Camera|Fly")