added MendingReducer tweak

craftattack/src/main/java/eu/mhsl/craftattack/spawn/craftattack/appliances/tweaks/mendingReducer/MendingReducer.java

@@ -0,0 +1,16 @@
+package eu.mhsl.craftattack.spawn.craftattack.appliances.tweaks.mendingReducer;
+
+import eu.mhsl.craftattack.spawn.core.appliance.Appliance;
+import org.bukkit.event.Listener;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.List;
+
+public class MendingReducer extends Appliance {
+    @Override
+    protected @NotNull List<Listener> listeners() {
+        return List.of(
+            new MendingRepairListener()
+        );
+    }
+}

craftattack/src/main/java/eu/mhsl/craftattack/spawn/craftattack/appliances/tweaks/mendingReducer/MendingRepairListener.java

@@ -0,0 +1,23 @@
+package eu.mhsl.craftattack.spawn.craftattack.appliances.tweaks.mendingReducer;
+
+import eu.mhsl.craftattack.spawn.core.appliance.ApplianceListener;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.player.PlayerItemMendEvent;
+
+public class MendingRepairListener extends ApplianceListener<MendingReducer> {
+    private static final double COST_MULTIPLIER = 2.0;
+
+    @EventHandler
+    public void onMendingRepair(PlayerItemMendEvent event) {
+        int baseConsumed = event.getConsumedExperience();
+        int orbExp = event.getExperienceOrb().getExperience();
+
+        int desiredTotal = (int) Math.ceil(baseConsumed * COST_MULTIPLIER);
+        int extraCost = Math.max(0, desiredTotal - baseConsumed);
+
+        int maxExtraPossible = Math.max(0, orbExp - baseConsumed);
+        int extraApplied = Math.min(extraCost, maxExtraPossible);
+
+        if (extraApplied > 0) event.getExperienceOrb().setExperience(orbExp - extraApplied);
+    }
+}