Animate items emerging from building output ports

src/lib/sim/Simulation.cpp

@@ -315,7 +315,7 @@ void Simulation::tick()
     m_buildingSystem->tickBeltPull();                    // step 3
     m_buildingSystem->tickProduction(m_currentTick);     // step 4
     m_buildingSystem->tickShipyardProduction(m_currentTick); // step 4b
-    m_buildingSystem->tickBeltPush();                    // step 5
+    m_buildingSystem->tickOutputBelts();                 // step 5
     m_beltSystem.tick();                                 // step 6
 
     // Step 7: ship behavior systems (movement arbitration via intent priority)