Update routing in next.config.ts to redirect "/tercih-robotu" to the hero form, add simple-icons dependency in package.json, and enhance database indexing for improved query performance. Remove unused SVG files and update metadata across various pages for better SEO and clarity.

src/components/site-header.tsx

@@ -1,14 +1,9 @@
 import { Suspense } from "react";
 import Image from "next/image";
 import Link from "next/link";
+import { KatalogArama } from "@/components/katalog-arama";
 import { UserNav, UserNavFallback } from "@/components/user-nav";
 
-const navLinks = [
-  { href: "/#nasil-calisir", label: "Nasıl çalışır?" },
-  { href: "/#karsilastirma", label: "Karşılaştır" },
-  { href: "/#sss", label: "SSS" },
-];
-
 export function SiteHeader() {
   return (
     <header className="sticky top-6 z-50 mt-6 print:hidden">
@@ -32,17 +27,7 @@ export function SiteHeader() {
             </span>
           </span>
         </Link>
-        <nav className="absolute left-1/2 hidden -translate-x-1/2 items-center gap-1 rounded-full border border-slate-200 bg-white p-1.5 text-base font-medium text-slate-600 sm:flex">
-          {navLinks.map((link) => (
-            <Link
-              key={link.href}
-              href={link.href}
-              className="rounded-full px-5 py-2 transition-colors duration-200 hover:bg-slate-100 hover:text-slate-900"
-            >
-              {link.label}
-            </Link>
-          ))}
-        </nav>
+        <KatalogArama />
         {/* UserNav session+DB bekler; Suspense dışına taşarsa tüm kabuk bloklanır */}
         <Suspense fallback={<UserNavFallback />}>
           <UserNav />