♻️ 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/prerender/metadata.js

@@ -1,18 +0,0 @@
-import { viteID } from "../core/util.js";
-function getPrerenderStatus({
-  filePath,
-  loader
-}) {
-  const fileID = viteID(filePath);
-  const moduleInfo = loader.getModuleInfo(fileID);
-  if (!moduleInfo) return;
-  const prerenderStatus = getPrerenderMetadata(moduleInfo);
-  return prerenderStatus;
-}
-function getPrerenderMetadata(moduleInfo) {
-  return moduleInfo?.meta?.astro?.pageOptions?.prerender;
-}
-export {
-  getPrerenderMetadata,
-  getPrerenderStatus
-};