Harden participant and map ownership and validate bounded physical flight

addons/ai/Scripts/Game/ERR/ERR_MortarReadiness.c

@@ -166,6 +166,9 @@ class ERR_MortarReadiness
   }
   if (m_Battery.CountShells() != 27) return ERR_MortarSupplyState.PENDING;
   m_Ready = true;
+  // One physical-ready handoff: HQ already owns/reserves this group, while
+  // Intel must see its actual late-spawned members after finite stock settles.
+  mode.RegisterGroup(group);
   group.ActivateAI();
   foreach (AIAgent readyAgent : agents)
   {

addons/ai/Scripts/Game/ERR/ERR_MortarSystem.c

@@ -55,7 +55,10 @@ class ERR_MortarSystem
   m_Batteries.Insert(battery);
   ERR_GameMode mode = ERR_GameMode.Get();
   mode.Own(gun);
-  mode.RegisterGroup(group);
+  // HQ owns/reserves the finite asset immediately. Publish its physical
+  // membership to companion consumers only after readiness has completed.
+  mode.Own(group);
+  m_HQ.RegisterGroup(group);
   m_HQ.ReserveGroup(group);
   battery.Audit("DEPLOY", "authored gun and four-person crew; finite ammunition initialization pending");
   return true;