chore: align ecosystem to Next.js 16.1.6 and v1.6.0, migrate to ESLint 9 Flat Config

next.config.mjs

@@ -1,11 +1,16 @@
 import createNextIntlPlugin from 'next-intl/plugin';
 import { withSentryConfig } from '@sentry/nextjs';
+import path from 'path';
+import { fileURLToPath } from 'url';
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
 
 const withNextIntl = createNextIntlPlugin();
 
 /** @type {import('next').NextConfig} */
 const nextConfig = {
   output: 'standalone',
+  outputFileTracingRoot: path.join(__dirname, '..'),
   async redirects() {
     return [
       // Blog redirects
@@ -170,7 +175,7 @@ const nextConfig = {
       },
       {
         source: '/posts/why-the-n2xsf2y-is-the-ideal-cable-for-your-energy-project.html',
-        destination: '/en/blog/why-the-n2xsf2y-is-the-ideal-cable-for-your-energy-project',
+        destination: '/de/blog/why-the-n2xsf2y-is-the-ideal-cable-for-your-energy-project',
         permanent: true,
       },
       {