♻️ Restructure: Move Astro to repository root

BREAKING CHANGE: Astro project is now at repository root
- Removed dealplustech-astro subdirectory
- Moved all Astro files to root
- Updated PostCSS config to .cjs
- Removed old Next.js files

✅ 11 pages built successfully
✅ Cookie consent banner included
✅ Privacy/Terms links in footer
✅ Ready for Easypanel deployment (no root dir needed)

Migration path:
- Old structure: /dealplustech-astro/
- New structure: / (root)

dealplustech-astro/node_modules/prompts/index.js

@@ -1,14 +0,0 @@
-function isNodeLT(tar) {
-  tar = (Array.isArray(tar) ? tar : tar.split('.')).map(Number);
-  let i=0, src=process.versions.node.split('.').map(Number);
-  for (; i < tar.length; i++) {
-    if (src[i] > tar[i]) return false;
-    if (tar[i] > src[i]) return true;
-  }
-  return false;
-}
-
-module.exports =
-  isNodeLT('8.6.0')
-    ? require('./dist/index.js')
-    : require('./lib/index.js');