Add sprinkler valve simulation contract

src/ReactorMaintenance.Simulation/SimulationEngine.cs

@@ -96,6 +96,7 @@ public sealed class SimulationEngine
 
         var next = level;
         next = NetworkPropagationSystem.Propagate(next);
+        next = SprinklerSystem.ApplyPressureDebt(next);
         next = ConsumerSystem.Resolve(next);
         next = StructuralIntegritySystem.Resolve(next);
         return next;
@@ -104,6 +105,7 @@ public sealed class SimulationEngine
     private static LevelState ResolveStepContent(LevelState level)
     {
         var next = level;
+        next = SprinklerSystem.Discharge(next);
         next = LeakSystem.Inject(next);
         next = SurfaceInteractionSystem.Resolve(next);
         next = next with { Global = next.Global with { Step = next.Global.Step + 1 } };