fix: clean up registry shutdown

ts/classes/registry.ts

@@ -317,6 +317,15 @@ export class RegistryManager {
    * Stop the registry and smartstorage server
    */
   async stop(): Promise<void> {
+    if (this.registry) {
+      try {
+        this.registry.destroy?.();
+      } catch (error) {
+        logger.error(`Error destroying smartregistry: ${getErrorMessage(error)}`);
+      }
+      this.registry = null;
+    }
+
     if (this.s3Server) {
       try {
         await this.s3Server.stop();
@@ -324,6 +333,7 @@ export class RegistryManager {
       } catch (error) {
         logger.error(`Error stopping smartstorage: ${getErrorMessage(error)}`);
       }
+      this.s3Server = null;
     }
 
     this.isInitialized = false;