feat: add analytics dashboard and registration page with updated Next.js routing configuration

admin/src/app/metrics/page.tsx

@@ -136,6 +136,7 @@ async function getMetrics(range: string = 'week', from?: string, to?: string) {
 
   const recentIPs = await Promise.all(
     recentUniqueIPs.map(async (item) => {
+      if (!item.ip || !item._max.createdAt) return null;
       return await prisma.analyticsEvent.findFirst({
         where: { 
           ip: item.ip,