♻️ 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
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✅ 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/rehype-stringify/lib/index.d.ts

@@ -1,24 +0,0 @@
-/**
- * Plugin to add support for serializing as HTML.
- *
- * @param {Options | null | undefined} [options]
- *   Configuration (optional).
- * @returns {undefined}
- *   Nothing.
- */
-export default function rehypeStringify(options?: Options | null | undefined): undefined;
-export default class rehypeStringify {
-    /**
-     * Plugin to add support for serializing as HTML.
-     *
-     * @param {Options | null | undefined} [options]
-     *   Configuration (optional).
-     * @returns {undefined}
-     *   Nothing.
-     */
-    constructor(options?: Options | null | undefined);
-    compiler: (tree: Root, file: import("vfile").VFile) => string;
-}
-import type { Options } from 'hast-util-to-html';
-import type { Root } from 'hast';
-//# sourceMappingURL=index.d.ts.map