Fix strict TypeScript checks for server

tests/state-recovery.test.ts

@@ -5,6 +5,7 @@ import { join } from "node:path";
 import { afterEach, describe, expect, it, vi } from "vitest";
 
 import { createYonexusServerRuntime } from "../plugin/core/runtime.js";
+import { createMockNotificationService } from "../plugin/notifications/discord.js";
 import {
   createYonexusServerStore,
   loadServerStore,
@@ -90,6 +91,7 @@ describe("YNX-1105e: Server state recovery", () => {
       },
       store,
       transport: firstTransport.transport,
+      notificationService: createMockNotificationService(),
       now: () => now
     });
 
@@ -145,6 +147,7 @@ describe("YNX-1105e: Server state recovery", () => {
       },
       store,
       transport: secondTransport.transport,
+      notificationService: createMockNotificationService(),
       now: () => now
     });