Update Next.js configuration and package dependencies

- Modified redirects in next.config.ts to change the destination for "/sohbet" to "/listem".
- Added new dependencies in package.json: marked, motion, react-markdown, remark-breaks, remark-gfm, shiki, and use-stick-to-bottom.
- Updated pnpm-lock.yaml to reflect the new package versions and dependencies.
- Removed obsolete stack files for Flutter, Nuxt, Nuxt.js, React Native, and Svelte from the UI/UX Pro Max skill data.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/components/user-nav.tsx

@@ -2,24 +2,30 @@ import Link from "next/link";
 import { Coins } from "lucide-react";
 import { getCurrentUser } from "@/lib/session";
 import { Button } from "@/components/ui/button";
+import { ListemButonu } from "@/components/manuel-liste/listem-butonu";
 import { SignOutButton } from "./sign-out-button";
 
 export async function UserNav() {
   const u = await getCurrentUser();
 
+  // Manuel liste localStorage'ta yaşadığı için Listem girişsiz de çalışır
   if (!u) {
     return (
-      <Button
-        asChild
-        className="h-12 cursor-pointer rounded-full bg-slate-900 px-7 text-base font-medium text-white transition-colors duration-200 hover:bg-slate-700"
-      >
-        <Link href="/giris">Giriş yap</Link>
-      </Button>
+      <div className="flex items-center gap-2">
+        <ListemButonu />
+        <Button
+          asChild
+          className="h-12 cursor-pointer rounded-full bg-slate-900 px-7 text-base font-medium text-white transition-colors duration-200 hover:bg-slate-700"
+        >
+          <Link href="/giris">Giriş yap</Link>
+        </Button>
+      </div>
     );
   }
 
   return (
     <div className="flex items-center gap-2">
+      <ListemButonu />
       <Link
         href="/paket"
         className="inline-flex h-12 items-center gap-2 whitespace-nowrap rounded-full border border-slate-200 bg-white px-5 text-sm font-semibold text-slate-700 transition-colors duration-200 hover:border-slate-300 hover:bg-slate-50"