feat(vfx): bind effects to live animated poses

src/AcDream.Core/Lighting/LightSource.cs

@@ -55,6 +55,20 @@ public sealed class LightSource
     public bool      IsLit = true;    // SetLightHook latch
     public bool      IsDynamic;       // #143: true = D3D hardware path (1/d att, range×1.5);
                                       // false = static dat-baked bake (1/d³, range×1.3)
+    /// <summary>
+    /// True when this light belongs to a live physics object whose root can
+    /// move. DAT-static lights keep their hydration-time world frame and are
+    /// deliberately excluded from the per-frame pose refresh.
+    /// </summary>
+    public bool      TracksOwnerPose;
+
+    /// <summary>
+    /// Setup-local light frame retained from <c>LIGHTINFO::view_space_location</c>.
+    /// Object-borne lights compose it with their owner's current root each
+    /// frame, matching <c>CPartArray::SetFrame</c> (<c>0x00519310</c>) calling
+    /// <c>LIGHTLIST::set_frame</c> (<c>0x00517C60</c>).
+    /// </summary>
+    public Matrix4x4 LocalPose = Matrix4x4.Identity;
 
     // Cached each frame by LightManager.
     public float DistSq;