♻️ 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/astro/dist/content/loaders/file.d.ts

@@ -1,16 +0,0 @@
-import type { Loader } from './types.js';
-type ParserOutput = Record<string, Record<string, unknown>> | Array<Record<string, unknown>>;
-interface FileOptions {
-    /**
-     * the parsing function to use for this data
-     * @default JSON.parse or yaml.load, depending on the extension of the file
-     * */
-    parser?: (text: string) => Promise<ParserOutput> | ParserOutput;
-}
-/**
- * Loads entries from a JSON file. The file must contain an array of objects that contain unique `id` fields, or an object with string keys.
- * @param fileName The path to the JSON file to load, relative to the content directory.
- * @param options Additional options for the file loader
- */
-export declare function file(fileName: string, options?: FileOptions): Loader;
-export {};