refactor: Move Astro to root, use PORT env (default 80), allow all hosts

- Move Astro files from dealplustech-astro/ to project root
- Update Dockerfile: PORT environment variable (default 80)
- Add vite.config.ts with allowedHosts: true
- Matches nixpacks behavior for Easypanel deployment
- No hardcoded ports or domains

node_modules/mdast-util-to-markdown/lib/handle/html.d.ts

@@ -0,0 +1,15 @@
+/**
+ * @param {Html} node
+ * @returns {string}
+ */
+export function html(node: Html): string;
+export namespace html {
+    export { htmlPeek as peek };
+}
+import type { Html } from 'mdast';
+/**
+ * @returns {string}
+ */
+declare function htmlPeek(): string;
+export {};
+//# sourceMappingURL=html.d.ts.map