♻️ 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

✅ 11 pages built successfully
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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-lua.js

@@ -1,20 +0,0 @@
-Prism.languages.lua = {
-	'comment': /^#!.+|--(?:\[(=*)\[[\s\S]*?\]\1\]|.*)/m,
-	// \z may be used to skip the following space
-	'string': {
-		pattern: /(["'])(?:(?!\1)[^\\\r\n]|\\z(?:\r\n|\s)|\\(?:\r\n|[^z]))*\1|\[(=*)\[[\s\S]*?\]\2\]/,
-		greedy: true
-	},
-	'number': /\b0x[a-f\d]+(?:\.[a-f\d]*)?(?:p[+-]?\d+)?\b|\b\d+(?:\.\B|(?:\.\d*)?(?:e[+-]?\d+)?\b)|\B\.\d+(?:e[+-]?\d+)?\b/i,
-	'keyword': /\b(?:and|break|do|else|elseif|end|false|for|function|goto|if|in|local|nil|not|or|repeat|return|then|true|until|while)\b/,
-	'function': /(?!\d)\w+(?=\s*(?:[({]))/,
-	'operator': [
-		/[-+*%^&|#]|\/\/?|<[<=]?|>[>=]?|[=~]=?/,
-		{
-			// Match ".." but don't break "..."
-			pattern: /(^|[^.])\.\.(?!\.)/,
-			lookbehind: true
-		}
-	],
-	'punctuation': /[\[\](){},;]|\.+|:+/
-};