♻️ 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/@astrojs/prism/dist/highlighter.js

@@ -1,36 +0,0 @@
-import Prism from "prismjs";
-import loadLanguages from "prismjs/components/index.js";
-import { addAstro } from "./plugin.js";
-const languageMap = /* @__PURE__ */ new Map([["ts", "typescript"]]);
-function runHighlighterWithAstro(lang, code) {
-  if (!lang) {
-    lang = "plaintext";
-  }
-  let classLanguage = `language-${lang}`;
-  const ensureLoaded = (language) => {
-    if (language && !Prism.languages[language]) {
-      loadLanguages([language]);
-    }
-  };
-  if (languageMap.has(lang)) {
-    ensureLoaded(languageMap.get(lang));
-  } else if (lang === "astro") {
-    ensureLoaded("typescript");
-    addAstro(Prism);
-  } else {
-    ensureLoaded("markup-templating");
-    ensureLoaded(lang);
-  }
-  if (lang && !Prism.languages[lang]) {
-    console.warn(`Unable to load the language: ${lang}`);
-  }
-  const grammar = Prism.languages[lang];
-  let html = code;
-  if (grammar) {
-    html = Prism.highlight(code, grammar, lang);
-  }
-  return { classLanguage, html };
-}
-export {
-  runHighlighterWithAstro
-};