feat: Integrate Directus CMS, add i18n with next-intl, and configure project tooling with pnpm, husky, and commitlint.**

lib/services/notifications/notification-service.ts

@@ -0,0 +1,9 @@
+export interface NotificationMessage {
+  title: string;
+  message: string;
+  priority?: number; // 0-10, Gotify style
+}
+
+export interface NotificationService {
+  notify(message: NotificationMessage): Promise<void>;
+}