♻️ 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/picomatch/index.js

@@ -1,17 +0,0 @@
-'use strict';
-
-const pico = require('./lib/picomatch');
-const utils = require('./lib/utils');
-
-function picomatch(glob, options, returnState = false) {
-  // default to os.platform()
-  if (options && (options.windows === null || options.windows === undefined)) {
-    // don't mutate the original options object
-    options = { ...options, windows: utils.isWindows() };
-  }
-
-  return pico(glob, options, returnState);
-}
-
-Object.assign(picomatch, pico);
-module.exports = picomatch;