Register Spring Listeners on enable; log commands

PaperPlugin: onEnable now invokes Spring beans of type org.bukkit.event.Listener and registers them with the server PluginManager, logging any registration failures. Added the Listener import. PaperCommandRegistry: added an info log "Registering commands" at the start of onEnable to surface command registration in logs.

Author: ericlmao

paper/src/main/java/games/negative/engine/paper/PaperPlugin.java

@@ -6,6 +6,7 @@
 import games.negative.engine.state.Reloadable;
 import games.negative.moss.paper.MossPaper;
 import lombok.extern.slf4j.Slf4j;
+import org.bukkit.event.Listener;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 
 import java.nio.file.Path;
@@ -27,6 +28,17 @@ public void loadInitialComponents(AnnotationConfigApplicationContext context) {
         MiniMessageUtil.init();
     }
 
+    @Override
+    public void onEnable() {
+        super.onEnable();
+
+        invokeBeans(
+                Listener.class,
+                listener -> getServer().getPluginManager().registerEvents(listener, this),
+                (listener, e) -> log.error("Failed to register listener: {}", listener.getClass().getSimpleName(), e)
+        );
+    }
+
     @Override
     public Path directory() {
         return getDataPath().toAbsolutePath();

paper/src/main/java/games/negative/engine/paper/command/PaperCommandRegistry.java

@@ -22,6 +22,7 @@ public class PaperCommandRegistry implements Enableable {
 
     @Override
     public void onEnable() {
+        log.info("Registering commands");
         PaperCommandManager<CommandSourceStack> commands = PaperCommandManager.builder()
                 .executionCoordinator(ExecutionCoordinator.asyncCoordinator())
                 .buildOnEnable(plugin);