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/unstorage/drivers/indexedb.d.ts

@@ -0,0 +1,7 @@
+export interface IDBKeyvalOptions {
+    base?: string;
+    dbName?: string;
+    storeName?: string;
+}
+declare const _default: (opts: IDBKeyvalOptions | undefined) => import("..").Driver<IDBKeyvalOptions | undefined, never>;
+export default _default;