fix: update Next.js config for custom domain CSS loading

- Remove GitHub Pages environment variable dependency
- Always use /tools base path in production
- Add explicit NODE_ENV in GitHub Actions workflow
- Fixes CSS and asset loading on custom domain webcored.com/tools

🧪 Generated with [Claude Code](https://claude.ai/code)

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

Author: prakashchokalingam

.github/workflows/deploy.yml

@@ -32,6 +32,8 @@ jobs:
 
       - name: Build
         run: npm run build
+        env:
+          NODE_ENV: production
 
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v3

next.config.js

@@ -1,12 +1,11 @@
 /** @type {import('next').NextConfig} */
 const isProd = process.env.NODE_ENV === 'production';
-const isGitHubPages = process.env.GITHUB_PAGES === 'true';
 
 const nextConfig = {
   output: 'export',
   trailingSlash: true,
-  basePath: isProd && isGitHubPages ? '/tools' : '',
-  assetPrefix: isProd && isGitHubPages ? '/tools/' : '',
+  basePath: isProd ? '/tools' : '',
+  assetPrefix: isProd ? '/tools/' : '',
   images: {
     unoptimized: true
   }