Add admin-core frontend (Port 3008)

Next.js admin frontend for Core with 3 categories
(Communication, Infrastructure, Development), 13 modules,
2 roles (developer, ops), and 11 API proxy routes.
Includes docker-compose service and nginx SSL config.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

admin-core/next.config.js

@@ -0,0 +1,29 @@
+/** @type {import('next').NextConfig} */
+const nextConfig = {
+  output: 'standalone',
+  reactStrictMode: true,
+  typescript: {
+    ignoreBuildErrors: true,
+  },
+  images: {
+    remotePatterns: [
+      {
+        protocol: 'http',
+        hostname: 'localhost',
+      },
+      {
+        protocol: 'http',
+        hostname: 'macmini',
+      },
+      {
+        protocol: 'https',
+        hostname: 'macmini',
+      },
+    ],
+  },
+  env: {
+    NEXT_PUBLIC_API_URL: process.env.NEXT_PUBLIC_API_URL || 'https://macmini:8000',
+  },
+}
+
+module.exports = nextConfig