refactor(streaming): complete landblock presentation cutover

Remove the legacy GameWindow apply path and make the concrete render, physics, and static publishers the only production owner graph. Serialize full-window retirement with shared-origin teleport and session boundaries so old coordinate-frame resources cannot survive into a new world or login.

src/AcDream.App/Streaming/LandblockPresentationPipeline.cs

@@ -4,14 +4,23 @@ using AcDream.Core.World;
 
 namespace AcDream.App.Streaming;
 
+/// <summary>
+/// Read-only presentation state needed by render traversal and diagnostics.
+/// Keeping this projection on the pipeline prevents the composition root from
+/// retaining each concrete publication owner independently.
+/// </summary>
+public readonly record struct LandblockPresentationDiagnostics(
+    LandblockRenderPublisherDiagnostics Render,
+    LandblockPhysicsPublisherDiagnostics Physics,
+    LandblockStaticPresentationDiagnostics Statics);
+
 /// <summary>
 /// Render-thread transaction coordinator for one accepted landblock streaming
 /// result. Streaming policy (desired tier, generation, priority, and apply
 /// budget) remains in <see cref="StreamingController"/>; spatial buckets remain
 /// in <see cref="GpuWorldState"/>. This owner fixes the presentation ordering
-/// independently of those policies so the concrete render, physics, and static
-/// publishers can be extracted behind it without returning callbacks to the
-/// game window.
+/// independently of those policies. The concrete render, physics, and static
+/// publishers remain private implementation participants behind this boundary.
 /// </summary>
 /// <remarks>
 /// Retail establishes cells/buildings before static objects in
@@ -19,9 +28,9 @@ namespace AcDream.App.Streaming;
 /// <c>CLandBlock::release_all @ 0x0052FCF0</c> (objects and visible cells) from
 /// later destruction in <c>CLandBlock::Destroy @ 0x0052FAA0</c> (static objects
 /// and buildings). Acdream's detach-first retry ledger is the existing
-/// asynchronous lifetime adaptation. The injected publication operation
-/// currently contains the already-shipped production transaction; later
-/// Slice-5 checkpoints replace it with focused publishers.
+/// asynchronous lifetime adaptation. Production always uses the focused owner
+/// graph; the internal delegate constructor exists only for hermetic policy and
+/// retry characterization tests.
 /// </remarks>
 public sealed class LandblockPresentationPipeline
 {
@@ -63,7 +72,7 @@ public sealed class LandblockPresentationPipeline
     private readonly Dictionary<LandblockStreamResult, PublicationTransaction> _publications =
         new(ReferenceEqualityComparer.Instance);
 
-    public LandblockPresentationPipeline(
+    internal LandblockPresentationPipeline(
         Action<LandblockBuild, LandblockMeshData> publishBeforeSpatialCommit,
         GpuWorldState state,
         Action<uint>? onLandblockLoaded = null,
@@ -137,6 +146,21 @@ public sealed class LandblockPresentationPipeline
             retirementOwner.Advance);
     }
 
+    /// <summary>
+    /// Building visibility registries published by the render owner. Legacy
+    /// test pipelines have no render owner and therefore expose an empty view.
+    /// </summary>
+    public IReadOnlyCollection<BuildingRegistry> BuildingRegistries =>
+        _renderPublisher?.BuildingRegistries ?? Array.Empty<BuildingRegistry>();
+
+    /// <summary>
+    /// Cumulative diagnostics from the three concrete presentation owners.
+    /// </summary>
+    public LandblockPresentationDiagnostics Diagnostics => new(
+        _renderPublisher?.Diagnostics ?? default,
+        _physicsPublisher?.Diagnostics ?? default,
+        _staticPublisher?.Diagnostics ?? default);
+
     public int PendingRetirementCount => _retirements.PendingCount;
     public int PendingPublicationCount => _publications.Count;