fix: complete retail parity stability pass

src/AcDream.App/Rendering/SkyPesFrameController.cs

@@ -43,6 +43,9 @@ namespace AcDream.App.Rendering;
 /// </summary>
 internal sealed class SkyPesFrameController
 {
+    private static readonly Matrix4x4[] IdentityPartPose =
+        [Matrix4x4.Identity];
+
     private readonly record struct SkyPesKey(
         int ObjectIndex,
         uint GfxObjId,
@@ -122,12 +125,23 @@ internal sealed class SkyPesFrameController
                 ? ParticleRenderPass.SkyPostScene
                 : ParticleRenderPass.SkyPreScene;
             _particles.SetEntityRenderPass(ownerId, renderPass);
+            // The sky cell follows the viewer. Keep the script dispatch
+            // anchor on that same current-frame pose: SoundTweaked hooks in
+            // the Rainy carriers are ordinary world sounds, and a stale
+            // creation-time anchor falls beyond retail's audible radius as
+            // soon as login/teleport/movement displaces the camera.
+            _scripts.SetOwnerAnchor(ownerId, cameraWorldPosition);
             Quaternion rotation = Rotation(skyObject, dayFraction);
             _poses.Publish(
                 ownerId,
                 Matrix4x4.CreateFromQuaternion(rotation)
                     * Matrix4x4.CreateTranslation(cameraWorldPosition),
-                Array.Empty<Matrix4x4>(),
+                // Dereth's scripted sky carriers (including lightning Setup
+                // 0x02000BA6) are one-part dummy anchors whose default part-0
+                // frame is identity. Their CreateParticle hooks target part
+                // 0, not the -1 root sentinel, so a root-only synthetic pose
+                // makes a live carrier look pose-less to ParticleHookSink.
+                IdentityPartPose,
                 cellId: 0u);
 
             if (_active.Contains(key) || _missing.Contains(key))