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/astro/dist/events/index.js

@@ -0,0 +1,12 @@
+import { AstroTelemetry } from "@astrojs/telemetry";
+import { version as viteVersion } from "vite";
+import { ASTRO_VERSION } from "../core/constants.js";
+const telemetry = new AstroTelemetry({
+  astroVersion: ASTRO_VERSION,
+  viteVersion
+});
+export * from "./error.js";
+export * from "./session.js";
+export {
+  telemetry
+};