change input/output buffer item count display

src/ui/SelectedBuildingPanel.h

@@ -8,6 +8,8 @@
 #include "Building.h"
 #include "EntityId.h"
 #include "GameConfig.h"
+#include "RecipesConfig.h"
+#include "ShipsConfig.h"
 #include "Tick.h"
 
 class Simulation;
@@ -39,6 +41,8 @@ private:
     void buildSingle(EntityId id);
     void buildMulti(const std::vector<EntityId>& ids);
     void refreshBuffers(const Building* b);
+    const RecipeDef* findRecipe(const Building* b) const;
+    const ShipDef*   findShipDef(const std::string& id) const;
 
     Simulation*        m_sim;
     const GameConfig*  m_config;