♻️ 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

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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/imageKind.d.ts

@@ -1,22 +0,0 @@
-import type { ImageMetadata, UnresolvedImageTransform } from '../types.js';
-/**
- * Determines if the given source is an ECMAScript Module (ESM) imported image.
- *
- * @param {ImageMetadata | string} src - The source to check. It can be an `ImageMetadata` object or a string.
- * @return {boolean} Returns `true` if the source is an `ImageMetadata` object, otherwise `false`.
- */
-export declare function isESMImportedImage(src: ImageMetadata | string): src is ImageMetadata;
-/**
- * Determines if the provided source is a remote image URL in the form of a string.
- *
- * @param {ImageMetadata | string} src - The source to check, which can either be an `ImageMetadata` object or a string.
- * @return {boolean} Returns `true` if the source is a string, otherwise `false`.
- */
-export declare function isRemoteImage(src: ImageMetadata | string): src is string;
-/**
- * Resolves the source of an image transformation by handling asynchronous or synchronous inputs.
- *
- * @param {UnresolvedImageTransform['src']} src - The source of the image transformation.
- * @return {Promise<string | ImageMetadata>} A promise that resolves to the image source. It returns either the default export of the resolved source or the resolved source itself if the default export doesn't exist.
- */
-export declare function resolveSrc(src: UnresolvedImageTransform['src']): Promise<string | ImageMetadata>;