feat: implement dynamic categories, admin category CRUD, fix routing and cleanup

app/[locale]/admin/events/[id]/page.tsx

@@ -0,0 +1,37 @@
+import { mockDb } from '@/lib/mockDb'
+import { notFound } from 'next/navigation'
+import EventFormClient from './EventFormClient'
+
+interface Props {
+  params: Promise<{ locale: string; id: string }>
+}
+
+export default async function AdminEventDetailPage({ params }: Props) {
+  const { id } = await params
+  
+  let event = null
+  if (id !== 'new') {
+    event = await mockDb.getEventById(id)
+    if (!event) {
+      notFound()
+    }
+  }
+
+  // Get listings so the admin can associate the event with a venue
+  const listings = await mockDb.getListings()
+
+  return (
+    <div className="max-w-3xl space-y-6">
+      <div>
+        <h2 className="text-3xl font-heading font-extrabold text-pine lowercase">
+          {id === 'new' ? 'yeni etkinlik ekle' : 'etkinliği düzenle'}
+        </h2>
+        <p className="text-ink/65 text-xs font-medium mt-1">
+          Etkinlik adını, tarih aralığını ve sponsorluk durumunu belirtin. Kapak görseli eklemeyi unutmayın.
+        </p>
+      </div>
+
+      <EventFormClient event={event} listings={listings} />
+    </div>
+  )
+}