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-etlua.js

@@ -0,0 +1,23 @@
+(function (Prism) {
+
+	Prism.languages.etlua = {
+		'delimiter': {
+			pattern: /^<%[-=]?|-?%>$/,
+			alias: 'punctuation'
+		},
+		'language-lua': {
+			pattern: /[\s\S]+/,
+			inside: Prism.languages.lua
+		}
+	};
+
+	Prism.hooks.add('before-tokenize', function (env) {
+		var pattern = /<%[\s\S]+?%>/g;
+		Prism.languages['markup-templating'].buildPlaceholders(env, 'etlua', pattern);
+	});
+
+	Prism.hooks.add('after-tokenize', function (env) {
+		Prism.languages['markup-templating'].tokenizePlaceholders(env, 'etlua');
+	});
+
+}(Prism));