♻️ 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/remark-parse/lib/index.d.ts

@@ -1,26 +0,0 @@
-/**
- * Aadd support for parsing from markdown.
- *
- * @param {Readonly<Options> | null | undefined} [options]
- *   Configuration (optional).
- * @returns {undefined}
- *   Nothing.
- */
-export default function remarkParse(options?: Readonly<Options> | null | undefined): undefined;
-export default class remarkParse {
-    /**
-     * Aadd support for parsing from markdown.
-     *
-     * @param {Readonly<Options> | null | undefined} [options]
-     *   Configuration (optional).
-     * @returns {undefined}
-     *   Nothing.
-     */
-    constructor(options?: Readonly<Options> | null | undefined);
-    parser: (document: string, file: import("vfile").VFile) => import("mdast").Root;
-}
-export type Root = import('mdast').Root;
-export type FromMarkdownOptions = import('mdast-util-from-markdown').Options;
-export type Parser = import('unified').Parser<Root>;
-export type Processor = import('unified').Processor<Root>;
-export type Options = Omit<FromMarkdownOptions, 'extensions' | 'mdastExtensions'>;