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/hast-util-to-html/lib/handle/index.d.ts

@@ -0,0 +1,8 @@
+/**
+ * @type {(node: Nodes, index: number | undefined, parent: Parents | undefined, state: State) => string}
+ */
+export const handle: (node: Nodes, index: number | undefined, parent: Parents | undefined, state: State) => string;
+import type { Nodes } from 'hast';
+import type { Parents } from 'hast';
+import type { State } from '../index.js';
+//# sourceMappingURL=index.d.ts.map