♻️ 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-oz.js

@@ -1,28 +0,0 @@
-Prism.languages.oz = {
-	'comment': {
-		pattern: /\/\*[\s\S]*?\*\/|%.*/,
-		greedy: true
-	},
-	'string': {
-		pattern: /"(?:[^"\\]|\\[\s\S])*"/,
-		greedy: true
-	},
-	'atom': {
-		pattern: /'(?:[^'\\]|\\[\s\S])*'/,
-		greedy: true,
-		alias: 'builtin'
-	},
-	'keyword': /\$|\[\]|\b(?:_|at|attr|case|catch|choice|class|cond|declare|define|dis|else(?:case|if)?|end|export|fail|false|feat|finally|from|fun|functor|if|import|in|local|lock|meth|nil|not|of|or|prepare|proc|prop|raise|require|self|skip|then|thread|true|try|unit)\b/,
-	'function': [
-		/\b[a-z][A-Za-z\d]*(?=\()/,
-		{
-			pattern: /(\{)[A-Z][A-Za-z\d]*\b/,
-			lookbehind: true
-		}
-	],
-	'number': /\b(?:0[bx][\da-f]+|\d+(?:\.\d*)?(?:e~?\d+)?)\b|&(?:[^\\]|\\(?:\d{3}|.))/i,
-	'variable': /`(?:[^`\\]|\\.)+`/,
-	'attr-name': /\b\w+(?=[ \t]*:(?![:=]))/,
-	'operator': /:(?:=|::?)|<[-:=]?|=(?:=|<?:?)|>=?:?|\\=:?|!!?|[|#+\-*\/,~^@]|\b(?:andthen|div|mod|orelse)\b/,
-	'punctuation': /[\[\](){}.:;?]/
-};