♻️ 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/virtual-modules/container.js

@@ -1,18 +0,0 @@
-async function loadRenderers(renderers) {
-  const loadedRenderers = await Promise.all(
-    renderers.map(async (renderer) => {
-      const mod = await import(renderer.serverEntrypoint.toString());
-      if (typeof mod.default !== "undefined") {
-        return {
-          ...renderer,
-          ssr: mod.default
-        };
-      }
-      return void 0;
-    })
-  );
-  return loadedRenderers.filter((r) => Boolean(r));
-}
-export {
-  loadRenderers
-};