♻️ 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
✅ Cookie consent banner included
✅ Privacy/Terms links in footer
✅ Ready for Easypanel deployment (no root dir needed)

Migration path:
- Old structure: /dealplustech-astro/
- New structure: / (root)

dealplustech-astro/node_modules/prismjs/components/prism-squirrel.js

@@ -1,47 +0,0 @@
-Prism.languages.squirrel = Prism.languages.extend('clike', {
-	'comment': [
-		Prism.languages.clike['comment'][0],
-		{
-			pattern: /(^|[^\\:])(?:\/\/|#).*/,
-			lookbehind: true,
-			greedy: true
-		}
-	],
-	'string': {
-		pattern: /(^|[^\\"'@])(?:@"(?:[^"]|"")*"(?!")|"(?:[^\\\r\n"]|\\.)*")/,
-		lookbehind: true,
-		greedy: true
-	},
-
-	'class-name': {
-		pattern: /(\b(?:class|enum|extends|instanceof)\s+)\w+(?:\.\w+)*/,
-		lookbehind: true,
-		inside: {
-			'punctuation': /\./
-		}
-	},
-	'keyword': /\b(?:__FILE__|__LINE__|base|break|case|catch|class|clone|const|constructor|continue|default|delete|else|enum|extends|for|foreach|function|if|in|instanceof|local|null|resume|return|static|switch|this|throw|try|typeof|while|yield)\b/,
-
-	'number': /\b(?:0x[0-9a-fA-F]+|\d+(?:\.(?:\d+|[eE][+-]?\d+))?)\b/,
-	'operator': /\+\+|--|<=>|<[-<]|>>>?|&&?|\|\|?|[-+*/%!=<>]=?|[~^]|::?/,
-	'punctuation': /[(){}\[\],;.]/
-});
-
-Prism.languages.insertBefore('squirrel', 'string', {
-	'char': {
-		pattern: /(^|[^\\"'])'(?:[^\\']|\\(?:[xuU][0-9a-fA-F]{0,8}|[\s\S]))'/,
-		lookbehind: true,
-		greedy: true
-	}
-});
-
-Prism.languages.insertBefore('squirrel', 'operator', {
-	'attribute-punctuation': {
-		pattern: /<\/|\/>/,
-		alias: 'important'
-	},
-	'lambda': {
-		pattern: /@(?=\()/,
-		alias: 'operator'
-	}
-});