feat(runtime): own SetPosition collision reports

src/AcDream.Core/Physics/ShadowObjectRegistry.cs

@@ -1563,6 +1563,32 @@ public sealed class ShadowObjectRegistry
     internal bool HasLogicalOwner(uint entityId) =>
         _entityReg.ContainsKey(entityId);
 
+    /// <summary>
+    /// Returns the exact collision identity consumed by retail
+    /// <c>CPhysicsObj::track_object_collision</c>.  Reporting must classify
+    /// an encountered object from the same retained shadow registration that
+    /// produced the collision; presence of an entity id alone is not enough
+    /// to infer either a static/environment collision or physics state.
+    /// </summary>
+    internal bool TryGetCollisionOwner(
+        uint entityId,
+        out uint physicsState,
+        out bool isStatic)
+    {
+        if (_entityReg.TryGetValue(
+                entityId,
+                out RegistrationRecord? registration))
+        {
+            physicsState = registration.State;
+            isStatic = registration.IsStatic;
+            return true;
+        }
+
+        physicsState = 0u;
+        isStatic = false;
+        return false;
+    }
+
     public int PrefixOwnerSlotCapacityForDiagnostics(uint landblockId) =>
         _prefixOwnerSlots.TryGetValue(
             landblockId & 0xFFFF0000u,