♻️ 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/prismjs/plugins/unescaped-markup/prism-unescaped-markup.min.js

@@ -1 +0,0 @@
-"undefined"!=typeof Prism&&"undefined"!=typeof document&&(Element.prototype.matches||(Element.prototype.matches=Element.prototype.msMatchesSelector||Element.prototype.webkitMatchesSelector),Prism.plugins.UnescapedMarkup=!0,Prism.hooks.add("before-highlightall",(function(e){e.selector+=', [class*="lang-"] script[type="text/plain"], [class*="language-"] script[type="text/plain"], script[type="text/plain"][class*="lang-"], script[type="text/plain"][class*="language-"]'})),Prism.hooks.add("before-sanity-check",(function(e){var t=e.element;if(t.matches('script[type="text/plain"]')){var a=document.createElement("code"),c=document.createElement("pre");c.className=a.className=t.className;var n=t.dataset;return Object.keys(n||{}).forEach((function(e){Object.prototype.hasOwnProperty.call(n,e)&&(c.dataset[e]=n[e])})),a.textContent=e.code=e.code.replace(/&lt;\/script(?:>|&gt;)/gi,"<\/script>"),c.appendChild(a),t.parentNode.replaceChild(c,t),void(e.element=a)}if(!e.code){var o=t.childNodes;1===o.length&&"#comment"==o[0].nodeName&&(t.textContent=e.code=o[0].textContent)}})));