chore: clean up scratch files and apply remaining updates

app/[locale]/collection/[slug]/page.tsx

@@ -3,19 +3,30 @@ import { Link } from '@/i18n/routing'
 import { notFound } from 'next/navigation'
 import { ArrowLeft, Layers } from 'lucide-react'
 import ListingCard from '@/components/ListingCard'
+import type { Metadata } from 'next'
 
 interface Props {
   params: Promise<{ locale: string; slug: string }>
 }
 
-export async function generateMetadata({ params }: Props) {
-  const { slug } = await params
+export async function generateMetadata({ params }: Props): Promise<Metadata> {
+  const { locale, slug } = await params
   const col = await mockDb.getCollectionBySlug(slug)
   if (!col) return {}
-  
+
+  const title = locale === 'en' ? col.titleEn : locale === 'ru' ? col.titleRu : col.titleTr
+  const description = locale === 'en' ? col.descriptionEn : locale === 'ru' ? col.descriptionRu : col.descriptionTr
+  const fullTitle = `${title} — Marmaris Local`
+
   return {
-    title: `${col.titleTr} Seçkisi — Marmaris Local`,
-    description: col.descriptionTr
+    title: fullTitle,
+    description,
+    openGraph: {
+      title: fullTitle,
+      description,
+      type: 'website',
+      ...(col.coverImage ? { images: [{ url: col.coverImage }] } : {}),
+    },
   }
 }