refactor: decouple system events from command dispatch and add explicit system event handlers and improve gateway handling

rewrite/utils.ts

@@ -20,7 +20,7 @@ export function setDefaults<T>(original: Record<string, any>, defaults: Record<s
 export const isNil = (value: any): value is null | undefined => value === null || value === undefined;
 export const exists = <T>(value: T | null | undefined): value is NonNullable<T> => !isNil(value);
 export const isObject = (value: any): value is Record<string, any> =>
-    typeof value === 'object' && !Array.isArray(value);
+    value !== null && typeof value === 'object' && !Array.isArray(value);
 export const log = (...args: any[]) => {
     const LOG_LEVEL = process.env.UNICORD_LOG_LEVEL?.toLocaleLowerCase();