♻️ 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-lilypond.js

@@ -1,69 +0,0 @@
-(function (Prism) {
-
-	var schemeExpression = /\((?:[^();"#\\]|\\[\s\S]|;.*(?!.)|"(?:[^"\\]|\\.)*"|#(?:\{(?:(?!#\})[\s\S])*#\}|[^{])|<expr>)*\)/.source;
-	// allow for up to pow(2, recursivenessLog2) many levels of recursive brace expressions
-	// For some reason, this can't be 4
-	var recursivenessLog2 = 5;
-	for (var i = 0; i < recursivenessLog2; i++) {
-		schemeExpression = schemeExpression.replace(/<expr>/g, function () { return schemeExpression; });
-	}
-	schemeExpression = schemeExpression.replace(/<expr>/g, /[^\s\S]/.source);
-
-
-	var lilypond = Prism.languages.lilypond = {
-		'comment': /%(?:(?!\{).*|\{[\s\S]*?%\})/,
-		'embedded-scheme': {
-			pattern: RegExp(/(^|[=\s])#(?:"(?:[^"\\]|\\.)*"|[^\s()"]*(?:[^\s()]|<expr>))/.source.replace(/<expr>/g, function () { return schemeExpression; }), 'm'),
-			lookbehind: true,
-			greedy: true,
-			inside: {
-				'scheme': {
-					pattern: /^(#)[\s\S]+$/,
-					lookbehind: true,
-					alias: 'language-scheme',
-					inside: {
-						'embedded-lilypond': {
-							pattern: /#\{[\s\S]*?#\}/,
-							greedy: true,
-							inside: {
-								'punctuation': /^#\{|#\}$/,
-								'lilypond': {
-									pattern: /[\s\S]+/,
-									alias: 'language-lilypond',
-									inside: null // see below
-								}
-							}
-						},
-						rest: Prism.languages.scheme
-					}
-				},
-				'punctuation': /#/
-			}
-		},
-		'string': {
-			pattern: /"(?:[^"\\]|\\.)*"/,
-			greedy: true
-		},
-		'class-name': {
-			pattern: /(\\new\s+)[\w-]+/,
-			lookbehind: true
-		},
-		'keyword': {
-			pattern: /\\[a-z][-\w]*/i,
-			inside: {
-				'punctuation': /^\\/
-			}
-		},
-		'operator': /[=|]|<<|>>/,
-		'punctuation': {
-			pattern: /(^|[a-z\d])(?:'+|,+|[_^]?-[_^]?(?:[-+^!>._]|(?=\d))|[_^]\.?|[.!])|[{}()[\]<>^~]|\\[()[\]<>\\!]|--|__/,
-			lookbehind: true
-		},
-		'number': /\b\d+(?:\/\d+)?\b/
-	};
-
-	lilypond['embedded-scheme'].inside['scheme'].inside['embedded-lilypond'].inside['lilypond'].inside = lilypond;
-
-	Prism.languages.ly = lilypond;
-
-}(Prism));