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/unstorage/drivers/session-storage.cjs

@@ -0,0 +1,19 @@
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+var _utils = require("./utils/index.cjs");
+var _localstorage = _interopRequireDefault(require("./localstorage.cjs"));
+function _interopRequireDefault(e) { return e && e.__esModule ? e : { default: e }; }
+const DRIVER_NAME = "session-storage";
+module.exports = (0, _utils.defineDriver)((opts = {}) => {
+  return {
+    ...(0, _localstorage.default)({
+      windowKey: "sessionStorage",
+      ...opts
+    }),
+    name: DRIVER_NAME
+  };
+});