perf: optimize server-side analytics and notifications to resolve 32s transaction delay

- Added 5s timeout to GotifyNotificationService
- Reduced timeout to 2s in UmamiAnalyticsService
- Implemented non-blocking analytics tracking in layout using Next.js after() API

app/[locale]/layout.tsx

@@ -88,7 +88,10 @@ export default async function Layout(props: {
       });
     }
 
-    serverServices.analytics.trackPageview();
+    const { after } = await import('next/server');
+    after(() => {
+      serverServices.analytics.trackPageview();
+    });
   } catch {
     if (process.env.NODE_ENV !== 'production' || !process.env.CI) {
       console.warn(

lib/services/analytics/umami-analytics-service.ts

@@ -91,7 +91,7 @@ export class UmamiAnalyticsService implements AnalyticsService {
 
       // Add a timeout to prevent hanging requests
       const controller = new AbortController();
-      const timeoutId = setTimeout(() => controller.abort(), 10000); // 10s timeout
+      const timeoutId = setTimeout(() => controller.abort(), 2000); // 2s timeout
 
       const headers: Record<string, string> = {
         'Content-Type': 'application/json',

lib/services/notifications/gotify-notification-service.ts

@@ -17,6 +17,9 @@ export class GotifyNotificationService implements NotificationService {
       const url = new URL('message', this.config.url);
       url.searchParams.set('token', this.config.token);
 
+      const controller = new AbortController();
+      const timeoutId = setTimeout(() => controller.abort(), 5000);
+
       const response = await fetch(url.toString(), {
         method: 'POST',
         headers: {
@@ -27,8 +30,11 @@ export class GotifyNotificationService implements NotificationService {
           message,
           priority,
         }),
+        signal: controller.signal,
       });
 
+      clearTimeout(timeoutId);
+
       if (!response.ok) {
         const errorText = await response.text();
         console.error('Gotify notification failed:', {