move the placement rules and the config-dependent queries off BuildingSystem

src/lib/sim/Simulation.cpp

@@ -1,6 +1,7 @@
 #include "Simulation.h"
 
 #include "FactoryQueries.h"
+#include "PlacementRules.h"
 
 #include <algorithm>
 #include <cassert>
@@ -860,7 +861,7 @@ std::optional<BuildingId> Simulation::tryPlaceBuilding(BuildingType type, QPoint
         return std::nullopt;
     }
 
-    if (!m_buildingSystem->isPlacementValid(type, anchor, rotation))
+    if (!isPlacementValid(m_factoryState, m_config, type, anchor, rotation))
     {
         return std::nullopt;
     }