feat: initial commit — tcb_devportal Next.js app

Includes Helm chart (tcb-devportal), Jenkinsfile with homelab CI pipeline,
and Next.js app source.

next.config.ts

@@ -0,0 +1,61 @@
+import type { NextConfig } from 'next'
+import createNextIntlPlugin from 'next-intl/plugin'
+import { buildSecurityHeaders } from './src/libs/security/headers'
+
+const withNextIntl = createNextIntlPlugin()
+
+const isProd = process.env.NODE_ENV === 'production'
+const securityHeaders = buildSecurityHeaders({ isProd })
+
+const nextConfig: NextConfig = {
+  output: 'standalone',
+  poweredByHeader: false,
+  reactStrictMode: true,
+  images: {
+    unoptimized: true,
+  },
+  experimental: {
+    authInterrupts: true,
+  },
+  async headers() {
+    return [
+      {
+        source: '/:path*',
+        headers: securityHeaders,
+      },
+    ]
+  },
+  async rewrites() {
+    const backendUrl =
+      process.env.NEXT_PUBLIC_BACK_END_DOMAIN || 'http://localhost:8080/api/v1'
+    return [
+      { source: '/api/v1', destination: backendUrl, basePath: false },
+      {
+        source: '/api/v1/:path*',
+        destination: `${backendUrl}/:path*`,
+        basePath: false,
+      },
+    ]
+  },
+  webpack(config) {
+    config.module.rules.push({
+      test: /\.yaml$/,
+      type: 'asset/source',
+    })
+    return config
+  },
+  turbopack: {
+    rules: {
+      '*.svg': {
+        loaders: ['@svgr/webpack'],
+        as: '*.js',
+      },
+      '*.yaml': {
+        loaders: ['yaml-loader'],
+        as: '*.js',
+      },
+    },
+  },
+}
+
+export default withNextIntl(nextConfig)