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/zod/v3/errors.d.cts

@@ -0,0 +1,5 @@
+import type { ZodErrorMap } from "./ZodError.cjs";
+import defaultErrorMap from "./locales/en.cjs";
+export { defaultErrorMap };
+export declare function setErrorMap(map: ZodErrorMap): void;
+export declare function getErrorMap(): ZodErrorMap;