feat(seo): implement SEO audit remediations

- Add dynamic sitemap.ts, robots.ts, and llms.txt route
- Add metadataBase and JSON-LD Organization schema to layout
- Set canonical alternates for all routes
- Migrate raw img tags to next/image for LCP optimization
- Add SEO dictionary strings to tr.json and en.json

app/[lang]/HomeClient.tsx

@@ -1,6 +1,7 @@
 "use client";
 
 import { useState } from "react";
+import Image from "next/image";
 import { motion, type Variants } from "framer-motion";
 import Link from "next/link";
 import { Utensils, Umbrella, Home, Wind, Hotel, Star, MapPin, ArrowRight } from "lucide-react";
@@ -289,11 +290,12 @@ export default function HomeClient({ lang, dict }: { lang: string; dict: any })
                 className={`flex flex-col ${i % 2 === 1 ? "md:flex-row-reverse" : "md:flex-row"} gap-10 items-center`}
               >
                 {/* Image */}
-                <div className="w-full md:w-[55%] group relative overflow-hidden shadow-[var(--shadow-xl)]">
-                  <img
+                <div className="w-full md:w-[55%] h-[420px] group relative overflow-hidden shadow-[var(--shadow-xl)]">
+                  <Image
                     src={venue.img}
                     alt={venue.title}
-                    className="w-full h-[420px] object-cover transition-transform duration-700 group-hover:scale-105"
+                    fill
+                    className="object-cover transition-transform duration-700 group-hover:scale-105"
                   />
                   <div className={`absolute inset-0 bg-gradient-to-t ${venue.color} to-transparent opacity-50`} />
                   <Badge variant="light" className="absolute bottom-6 left-6 shadow-md">