perf(diag): complete trustworthy Slice A capture tooling

Correct whole-frame GPU timestamps so they bracket only the accepted render transaction and associate delayed query results with the owning CPU frame. Add route-wide frame-history summaries, fixed-camera screenshot comparison, process counters, contention traces, a pinned Arwic workload, and credential-safe launch disclosure.

The reference hardware/display contract now keeps local and RDP populations separate and defines the screenshot and re-baseline rules needed by later prepared-content gates.

Co-Authored-By: Codex <noreply@openai.com>

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

@@ -33,6 +33,7 @@ public sealed class RenderFrameRecoveryIntegrationTests
             new Screenshots());
         var orchestrator = new RenderFrameOrchestrator(
             gpu,
+            new GpuMeasurement(),
             preparation,
             new World(failure),
             presentation,
@@ -87,6 +88,17 @@ public sealed class RenderFrameRecoveryIntegrationTests
         }
     }
 
+    private sealed class GpuMeasurement : IRenderFrameGpuMeasurement
+    {
+        public void BeginFrame()
+        {
+        }
+
+        public void EndFrame()
+        {
+        }
+    }
+
     private sealed class DevTools(FailureSwitch failure) : IDevToolsFrameLifecycle
     {
         public bool IsOpen { get; private set; }