feat(rendering): prove packed dispatcher output parity

Build a compare-only dispatcher classifier from RenderFrameView and compare complete opaque, alpha, selection, clip, light, texture, transform, and draw payloads against the accepted path. Preserve retail's stable equal-CYpt ordering with explicit draw-local submission ordinals so material-group history cannot affect alpha ties.

src/AcDream.App/Rendering/Scene/RenderInstanceCandidate.cs

@@ -69,6 +69,31 @@ internal readonly record struct RenderInstanceCandidate(
             MeshPartCount: meshPartCount,
             TupleLandblockId: tupleLandblockId);
     }
+
+    internal static RenderInstanceCandidate FromFrame(
+        in RenderFrameEntityCandidate source,
+        uint tupleLandblockId)
+    {
+        RenderProjectionRecord projection = source.Projection;
+        return new RenderInstanceCandidate(
+            ProjectionId: projection.Id,
+            LocalEntityId: projection.Source.LocalEntityId,
+            ServerGuid: projection.Source.ServerGuid,
+            SourceId: projection.Source.SourceId,
+            ParentCellId: projection.Source.ParentCellId,
+            RootWorld: projection.Transform.LocalToWorld,
+            Position: projection.Transform.Position,
+            Rotation: projection.Transform.Rotation,
+            Scale: projection.Transform.UniformScale,
+            Bounds: projection.Bounds,
+            PaletteOverride:
+                projection.EntityPayload.PaletteOverride,
+            IsBuildingShell:
+                projection.EntityPayload.IsBuildingShell,
+            Animated: source.Animated,
+            MeshPartCount: source.MeshPartCount,
+            TupleLandblockId: tupleLandblockId);
+    }
 }
 
 /// <summary>