feat: arastirma modulleri odeme ve operasyonlari tamamla

next.config.mjs

@@ -1,9 +1,21 @@
 /** @type {import('next').NextConfig} */
 const nextConfig = {
   reactStrictMode: true,
+  poweredByHeader: false,
   typescript: { ignoreBuildErrors: false },
   turbopack: {
     root: process.cwd()
+  },
+  async headers() {
+    const securityHeaders = [
+      { key: "X-Content-Type-Options", value: "nosniff" },
+      { key: "X-Frame-Options", value: "DENY" },
+      { key: "Referrer-Policy", value: "strict-origin-when-cross-origin" },
+      { key: "Permissions-Policy", value: "camera=(), microphone=(), geolocation=(), payment=(self)" },
+      { key: "Content-Security-Policy", value: "default-src 'self'; base-uri 'self'; form-action 'self'; frame-ancestors 'none'; object-src 'none'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline'; img-src 'self' data: blob: https:; media-src 'self' blob: https:; connect-src 'self'; font-src 'self' data:; upgrade-insecure-requests" }
+    ];
+    if (process.env.NODE_ENV === "production") securityHeaders.push({ key: "Strict-Transport-Security", value: "max-age=63072000; includeSubDomains; preload" });
+    return [{ source: "/(.*)", headers: securityHeaders }];
   }
 };