♻️ 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/hastscript/lib/jsx-automatic.d.ts

@@ -1,43 +0,0 @@
-import type {Child, Properties, Result} from './create-h.js'
-
-export namespace JSX {
-  /**
-   * Define the return value of JSX syntax.
-   */
-  type Element = Result
-
-  /**
-   * Key of this interface defines as what prop children are passed.
-   */
-  interface ElementChildrenAttribute {
-    /**
-     * Only the key matters, not the value.
-     */
-    children?: never
-  }
-
-  /**
-   * Disallow the use of functional components.
-   */
-  type IntrinsicAttributes = never
-
-  /**
-   * Define the prop types for known elements.
-   *
-   * For `hastscript` this defines any string may be used in combination with
-   * `hast` `Properties`.
-   *
-   * This **must** be an interface.
-   */
-  type IntrinsicElements = Record<
-    string,
-    | Properties
-    | {
-        /**
-         * The prop that matches `ElementChildrenAttribute` key defines the
-         * type of JSX children, defines the children type.
-         */
-        children?: Child
-      }
-  >
-}