♻️ 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/yargs-parser/browser.js

@@ -1,29 +0,0 @@
-// Main entrypoint for ESM web browser environments. Avoids using Node.js
-// specific libraries, such as "path".
-//
-// TODO: figure out reasonable web equivalents for "resolve", "normalize", etc.
-import { camelCase, decamelize, looksLikeNumber } from './build/lib/string-utils.js'
-import { YargsParser } from './build/lib/yargs-parser.js'
-const parser = new YargsParser({
-  cwd: () => { return '' },
-  format: (str, arg) => { return str.replace('%s', arg) },
-  normalize: (str) => { return str },
-  resolve: (str) => { return str },
-  require: () => {
-    throw Error('loading config from files not currently supported in browser')
-  },
-  env: () => {}
-})
-
-const yargsParser = function Parser (args, opts) {
-  const result = parser.parse(args.slice(), opts)
-  return result.argv
-}
-yargsParser.detailed = function (args, opts) {
-  return parser.parse(args.slice(), opts)
-}
-yargsParser.camelCase = camelCase
-yargsParser.decamelize = decamelize
-yargsParser.looksLikeNumber = looksLikeNumber
-
-export default yargsParser