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/@shikijs/langs/dist/vue-directives.mjs

@@ -0,0 +1,5 @@
+const lang = Object.freeze(JSON.parse("{\"fileTypes\":[],\"injectTo\":[\"source.vue\",\"text.html.markdown\",\"text.html.derivative\",\"text.pug\"],\"injectionSelector\":\"L:meta.tag -meta.attribute -meta.ng-binding -entity.name.tag.pug -attribute_value -source.tsx -source.js.jsx, L:meta.element -meta.attribute\",\"name\":\"vue-directives\",\"patterns\":[{\"include\":\"text.html.vue#vue-directives\"}],\"scopeName\":\"vue.directives\"}"))
+
+export default [
+lang
+]