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-xml-doc.js

@@ -0,0 +1,40 @@
+(function (Prism) {
+
+	/**
+	 * If the given language is present, it will insert the given doc comment grammar token into it.
+	 *
+	 * @param {string} lang
+	 * @param {any} docComment
+	 */
+	function insertDocComment(lang, docComment) {
+		if (Prism.languages[lang]) {
+			Prism.languages.insertBefore(lang, 'comment', {
+				'doc-comment': docComment
+			});
+		}
+	}
+
+	var tag = Prism.languages.markup.tag;
+
+	var slashDocComment = {
+		pattern: /\/\/\/.*/,
+		greedy: true,
+		alias: 'comment',
+		inside: {
+			'tag': tag
+		}
+	};
+	var tickDocComment = {
+		pattern: /'''.*/,
+		greedy: true,
+		alias: 'comment',
+		inside: {
+			'tag': tag
+		}
+	};
+
+	insertDocComment('csharp', slashDocComment);
+	insertDocComment('fsharp', slashDocComment);
+	insertDocComment('vbnet', tickDocComment);
+
+}(Prism));