♻️ 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-antlr4.js

@@ -1,65 +0,0 @@
-Prism.languages.antlr4 = {
-	'comment': /\/\/.*|\/\*[\s\S]*?(?:\*\/|$)/,
-	'string': {
-		pattern: /'(?:\\.|[^\\'\r\n])*'/,
-		greedy: true
-	},
-	'character-class': {
-		pattern: /\[(?:\\.|[^\\\]\r\n])*\]/,
-		greedy: true,
-		alias: 'regex',
-		inside: {
-			'range': {
-				pattern: /([^[]|(?:^|[^\\])(?:\\\\)*\\\[)-(?!\])/,
-				lookbehind: true,
-				alias: 'punctuation'
-			},
-			'escape': /\\(?:u(?:[a-fA-F\d]{4}|\{[a-fA-F\d]+\})|[pP]\{[=\w-]+\}|[^\r\nupP])/,
-			'punctuation': /[\[\]]/
-		}
-	},
-	'action': {
-		pattern: /\{(?:[^{}]|\{(?:[^{}]|\{(?:[^{}]|\{[^{}]*\})*\})*\})*\}/,
-		greedy: true,
-		inside: {
-			'content': {
-				// this might be C, C++, Python, Java, C#, or any other language ANTLR4 compiles to
-				pattern: /(\{)[\s\S]+(?=\})/,
-				lookbehind: true
-			},
-			'punctuation': /[{}]/
-		}
-	},
-	'command': {
-		pattern: /(->\s*(?!\s))(?:\s*(?:,\s*)?\b[a-z]\w*(?:\s*\([^()\r\n]*\))?)+(?=\s*;)/i,
-		lookbehind: true,
-		inside: {
-			'function': /\b\w+(?=\s*(?:[,(]|$))/,
-			'punctuation': /[,()]/
-		}
-	},
-	'annotation': {
-		pattern: /@\w+(?:::\w+)*/,
-		alias: 'keyword'
-	},
-	'label': {
-		pattern: /#[ \t]*\w+/,
-		alias: 'punctuation'
-	},
-	'keyword': /\b(?:catch|channels|finally|fragment|grammar|import|lexer|locals|mode|options|parser|returns|throws|tokens)\b/,
-	'definition': [
-		{
-			pattern: /\b[a-z]\w*(?=\s*:)/,
-			alias: ['rule', 'class-name']
-		},
-		{
-			pattern: /\b[A-Z]\w*(?=\s*:)/,
-			alias: ['token', 'constant']
-		},
-	],
-	'constant': /\b[A-Z][A-Z_]*\b/,
-	'operator': /\.\.|->|[|~]|[*+?]\??/,
-	'punctuation': /[;:()=]/
-};
-
-Prism.languages.g4 = Prism.languages.antlr4;