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/mdast-util-to-markdown/lib/configure.d.ts

@@ -0,0 +1,9 @@
+/**
+ * @param {State} base
+ * @param {Options} extension
+ * @returns {State}
+ */
+export function configure(base: State, extension: Options): State;
+import type { State } from './types.js';
+import type { Options } from './types.js';
+//# sourceMappingURL=configure.d.ts.map