World Manager Seam

adapters/bukkit/plugin/src/main/java/art/arcane/iris/Iris.java

@@ -18,6 +18,10 @@
 
 package art.arcane.iris;
 
+import art.arcane.iris.engine.IrisWorldManager;
+
+import art.arcane.iris.engine.framework.EngineWorldManagerProvider;
+
 import com.google.gson.JsonObject;
 import com.google.gson.JsonParseException;
 import com.google.gson.JsonParser;
@@ -592,6 +596,11 @@ public class Iris extends VolmitPlugin implements Listener, ReloadAware {
         tickets = new ChunkTickets();
         linkMultiverseCore = new MultiverseCoreLink();
         IrisServices.register(MultiverseCoreLink.class, linkMultiverseCore);
+        IrisServices.register(EngineWorldManagerProvider.class, (EngineWorldManagerProvider) (Engine engine) -> {
+            IrisWorldManager manager = new IrisWorldManager(engine);
+            manager.startManager();
+            return manager;
+        });
         IrisServices.register(art.arcane.iris.core.runtime.WorldDeletionQueue.class, (art.arcane.iris.core.runtime.WorldDeletionQueue) Iris::queueWorldDeletionOnStartup);
         settingsFile = getDataFile("settings.json");
         configHotloadEngine = new ConfigHotloadEngine(

core/src/main/java/art/arcane/iris/engine/IrisEngine.java

@@ -244,9 +244,8 @@ public class IrisEngine implements Engine {
             setupMode();
             IrisLogging.debug("[IrisEngine timing] setupMode=" + (M.ms() - t0) + "ms");
             t0 = M.ms();
-            IrisWorldManager manager = new IrisWorldManager(this);
+            EngineWorldManager manager = IrisServices.get(EngineWorldManagerProvider.class).create(this);
             worldManager = manager;
-            manager.startManager();
             IrisLogging.debug("[IrisEngine timing] IrisWorldManager=" + (M.ms() - t0) + "ms");
             J.a(this::computeBiomeMaxes);
             J.a(() -> {

core/src/main/java/art/arcane/iris/engine/framework/EngineWorldManagerProvider.java

@@ -0,0 +1,23 @@
+/*
+ * Iris is a World Generator for Minecraft Bukkit Servers
+ * Copyright (c) 2026 Arcane Arts (Volmit Software)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package art.arcane.iris.engine.framework;
+
+public interface EngineWorldManagerProvider {
+    EngineWorldManager create(Engine engine);
+}