♻️ 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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✅ Ready for Easypanel deployment (no root dir needed)

Migration path:
- Old structure: /dealplustech-astro/
- New structure: / (root)

dealplustech-astro/node_modules/astro/dist/assets/utils/queryParams.d.ts

@@ -1,11 +0,0 @@
-import type { ImageMetadata } from '../types.js';
-/**
- * Extracts the original image query parameters (width, height, format) from the given `URLSearchParams` object
- * and returns them as an object. If any of the required parameters are missing or invalid, the function returns undefined.
- *
- * The `width` and `height` are parsed to integer values.
- *
- * @param {URLSearchParams} params - The `URLSearchParams` object containing the query parameters.
- * @return {Pick<ImageMetadata, 'width' | 'height' | 'format'> | undefined} An object with the original image parameters (width, height, format) or undefined if any parameter is missing.
- */
-export declare function getOrigQueryParams(params: URLSearchParams): Pick<ImageMetadata, 'width' | 'height' | 'format'> | undefined;