♻️ Restructure: Move Astro to repository root

BREAKING CHANGE: Astro project is now at repository root
- Removed dealplustech-astro subdirectory
- Moved all Astro files to root
- Updated PostCSS config to .cjs
- Removed old Next.js files

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✅ Ready for Easypanel deployment (no root dir needed)

Migration path:
- Old structure: /dealplustech-astro/
- New structure: / (root)

dealplustech-astro/node_modules/prismjs/components/prism-xml-doc.js

@@ -1,40 +0,0 @@
-(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));