♻️ 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
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✅ 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/hast-util-to-html/index.js

@@ -1,8 +0,0 @@
-/**
- * @typedef {import('./lib/index.js').CharacterReferences} CharacterReferences
- * @typedef {import('./lib/index.js').Options} Options
- * @typedef {import('./lib/index.js').Quote} Quote
- * @typedef {import('./lib/index.js').Space} Space
- */
-
-export {toHtml} from './lib/index.js'