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/micromark/dev/lib/postprocess.d.ts

@@ -0,0 +1,9 @@
+/**
+ * @param {Array<Event>} events
+ *   Events.
+ * @returns {Array<Event>}
+ *   Events.
+ */
+export function postprocess(events: Array<Event>): Array<Event>;
+import type { Event } from 'micromark-util-types';
+//# sourceMappingURL=postprocess.d.ts.map