♻️ 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/normalize-path/index.js

@@ -1,35 +0,0 @@
-/*!
- * normalize-path <https://github.com/jonschlinkert/normalize-path>
- *
- * Copyright (c) 2014-2018, Jon Schlinkert.
- * Released under the MIT License.
- */
-
-module.exports = function(path, stripTrailing) {
-  if (typeof path !== 'string') {
-    throw new TypeError('expected path to be a string');
-  }
-
-  if (path === '\\' || path === '/') return '/';
-
-  var len = path.length;
-  if (len <= 1) return path;
-
-  // ensure that win32 namespaces has two leading slashes, so that the path is
-  // handled properly by the win32 version of path.parse() after being normalized
-  // https://msdn.microsoft.com/library/windows/desktop/aa365247(v=vs.85).aspx#namespaces
-  var prefix = '';
-  if (len > 4 && path[3] === '\\') {
-    var ch = path[2];
-    if ((ch === '?' || ch === '.') && path.slice(0, 2) === '\\\\') {
-      path = path.slice(2);
-      prefix = '//';
-    }
-  }
-
-  var segs = path.split(/[/\\]+/);
-  if (stripTrailing !== false && segs[segs.length - 1] === '') {
-    segs.pop();
-  }
-  return prefix + segs.join('/');
-};