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/tapable/lib/util-browser.js

@@ -0,0 +1,18 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+module.exports.deprecate = (fn, msg) => {
+	let once = true;
+	return function deprecate() {
+		if (once) {
+			// eslint-disable-next-line no-console
+			console.warn(`DeprecationWarning: ${msg}`);
+			once = false;
+		}
+		// eslint-disable-next-line prefer-rest-params
+		return fn.apply(this, arguments);
+	};
+};