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/prismjs/components/prism-tsx.js

@@ -0,0 +1,15 @@
+(function (Prism) {
+	var typescript = Prism.util.clone(Prism.languages.typescript);
+	Prism.languages.tsx = Prism.languages.extend('jsx', typescript);
+
+	// doesn't work with TS because TS is too complex
+	delete Prism.languages.tsx['parameter'];
+	delete Prism.languages.tsx['literal-property'];
+
+	// This will prevent collisions between TSX tags and TS generic types.
+	// Idea by https://github.com/karlhorky
+	// Discussion: https://github.com/PrismJS/prism/issues/2594#issuecomment-710666928
+	var tag = Prism.languages.tsx.tag;
+	tag.pattern = RegExp(/(^|[^\w$]|(?=<\/))/.source + '(?:' + tag.pattern.source + ')', tag.pattern.flags);
+	tag.lookbehind = true;
+}(Prism));