♻️ 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-dart.js

@@ -1,79 +0,0 @@
-(function (Prism) {
-	var keywords = [
-		/\b(?:async|sync|yield)\*/,
-		/\b(?:abstract|assert|async|await|break|case|catch|class|const|continue|covariant|default|deferred|do|dynamic|else|enum|export|extends|extension|external|factory|final|finally|for|get|hide|if|implements|import|in|interface|library|mixin|new|null|on|operator|part|rethrow|return|set|show|static|super|switch|sync|this|throw|try|typedef|var|void|while|with|yield)\b/
-	];
-
-	// Handles named imports, such as http.Client
-	var packagePrefix = /(^|[^\w.])(?:[a-z]\w*\s*\.\s*)*(?:[A-Z]\w*\s*\.\s*)*/.source;
-
-	// based on the dart naming conventions
-	var className = {
-		pattern: RegExp(packagePrefix + /[A-Z](?:[\d_A-Z]*[a-z]\w*)?\b/.source),
-		lookbehind: true,
-		inside: {
-			'namespace': {
-				pattern: /^[a-z]\w*(?:\s*\.\s*[a-z]\w*)*(?:\s*\.)?/,
-				inside: {
-					'punctuation': /\./
-				}
-			},
-		}
-	};
-
-	Prism.languages.dart = Prism.languages.extend('clike', {
-		'class-name': [
-			className,
-			{
-				// variables and parameters
-				// this to support class names (or generic parameters) which do not contain a lower case letter (also works for methods)
-				pattern: RegExp(packagePrefix + /[A-Z]\w*(?=\s+\w+\s*[;,=()])/.source),
-				lookbehind: true,
-				inside: className.inside
-			}
-		],
-		'keyword': keywords,
-		'operator': /\bis!|\b(?:as|is)\b|\+\+|--|&&|\|\||<<=?|>>=?|~(?:\/=?)?|[+\-*\/%&^|=!<>]=?|\?/
-	});
-
-	Prism.languages.insertBefore('dart', 'string', {
-		'string-literal': {
-			pattern: /r?(?:("""|''')[\s\S]*?\1|(["'])(?:\\.|(?!\2)[^\\\r\n])*\2(?!\2))/,
-			greedy: true,
-			inside: {
-				'interpolation': {
-					pattern: /((?:^|[^\\])(?:\\{2})*)\$(?:\w+|\{(?:[^{}]|\{[^{}]*\})*\})/,
-					lookbehind: true,
-					inside: {
-						'punctuation': /^\$\{?|\}$/,
-						'expression': {
-							pattern: /[\s\S]+/,
-							inside: Prism.languages.dart
-						}
-					}
-				},
-				'string': /[\s\S]+/
-			}
-		},
-		'string': undefined
-	});
-
-	Prism.languages.insertBefore('dart', 'class-name', {
-		'metadata': {
-			pattern: /@\w+/,
-			alias: 'function'
-		}
-	});
-
-	Prism.languages.insertBefore('dart', 'class-name', {
-		'generics': {
-			pattern: /<(?:[\w\s,.&?]|<(?:[\w\s,.&?]|<(?:[\w\s,.&?]|<[\w\s,.&?]*>)*>)*>)*>/,
-			inside: {
-				'class-name': className,
-				'keyword': keywords,
-				'punctuation': /[<>(),.:]/,
-				'operator': /[?&|]/
-			}
-		},
-	});
-}(Prism));