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/commander/typings/esm.d.mts

@@ -0,0 +1,3 @@
+// Just reexport the types from cjs
+// This is a bit indirect. There is not an index.js, but TypeScript will look for index.d.ts for types.
+export * from './index.js';