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/uncrypto/dist/crypto.web.d.ts

@@ -0,0 +1,6 @@
+declare const subtle: Crypto["subtle"];
+declare const randomUUID: Crypto["randomUUID"];
+declare const getRandomValues: Crypto["getRandomValues"];
+declare const _crypto: Crypto;
+
+export { _crypto as default, getRandomValues, randomUUID, subtle };