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/unist-util-is/index.d.ts

@@ -0,0 +1,5 @@
+export type Check = import("./lib/index.js").Check;
+export type Test = import("./lib/index.js").Test;
+export type TestFunction = import("./lib/index.js").TestFunction;
+export { is, convert } from "./lib/index.js";
+//# sourceMappingURL=index.d.ts.map