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/assets/fonts/infra/build-url-resolver.d.ts

@@ -0,0 +1,12 @@
+import type { AssetsPrefix } from '../../../types/public/index.js';
+import type { UrlResolver } from '../definitions.js';
+export declare class BuildUrlResolver implements UrlResolver {
+    #private;
+    constructor({ base, assetsPrefix, searchParams, }: {
+        base: string;
+        assetsPrefix: AssetsPrefix;
+        searchParams: URLSearchParams;
+    });
+    resolve(id: string): string;
+    get cspResources(): Array<string>;
+}