fix(rendering): bound portal resource lifetime

Separate logical ownership, render publication, and GPU retirement across live entities, landblocks, particles, textures, mesh arenas, portal/UI teardown, and per-frame scratch storage. Add bounded DAT/texture caches, upload budgets, three-frame fence retirement, exact-incarnation appearance reconciliation, frame pacing, and extensive lifetime conformance coverage.\n\nThe seven-destination connected route now cuts peak working/private memory roughly in half, returns Caul to 125-153 FPS locally, and produces no WER or AMD reset.\n\nCo-authored-by: OpenAI Codex <codex@openai.com>

src/AcDream.Core/Vfx/IEntityEffectPoseSource.cs

@@ -14,6 +14,22 @@ public interface IEntityEffectPoseSource
     bool TryGetPartPose(uint localEntityId, int partIndex, out Matrix4x4 partLocal);
 }
 
+/// <summary>
+/// Optional update-thread notification surface for pose registries. Effect
+/// consumers use this to refresh only owners whose final root, part, or cell
+/// pose actually changed instead of polling every retained owner each frame.
+/// </summary>
+/// <remarks>
+/// Notifications are synchronous and occur after the new pose is published.
+/// Implementations must suppress notifications when a publish is byte-for-byte
+/// equivalent to the current pose. Consumers must not mutate the pose source
+/// from inside the callback.
+/// </remarks>
+public interface IEntityEffectPoseChangeSource
+{
+    event Action<uint>? EffectPoseChanged;
+}
+
 /// <summary>
 /// Optional spatial companion for consumers, such as object lights, whose
 /// render registration is scoped to the owner's current AC cell.