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/css-what/lib/commonjs/stringify.d.ts

@@ -0,0 +1,8 @@
+import { Selector } from "./types";
+/**
+ * Turns `selector` back into a string.
+ *
+ * @param selector Selector to stringify.
+ */
+export declare function stringify(selector: Selector[][]): string;
+//# sourceMappingURL=stringify.d.ts.map