♻️ 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/astro/dist/vite-plugin-html/transform/index.js

@@ -1,21 +0,0 @@
-import MagicString from "magic-string";
-import { rehype } from "rehype";
-import { VFile } from "vfile";
-import escape from "./escape.js";
-import slots, { SLOT_PREFIX } from "./slots.js";
-async function transform(code, id) {
-  const s = new MagicString(code, { filename: id });
-  const parser = rehype().data("settings", { fragment: true }).use(escape, { s }).use(slots, { s });
-  const vfile = new VFile({ value: code, path: id });
-  await parser.process(vfile);
-  s.prepend(`function render({ slots: ${SLOT_PREFIX} }) {
-		return \``);
-  s.append('`\n	}\nrender["astro:html"] = true;\nexport default render;');
-  return {
-    code: s.toString(),
-    map: s.generateMap({ hires: "boundary" })
-  };
-}
-export {
-  transform
-};