♻️ 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-abnf.js

@@ -1,54 +0,0 @@
-(function (Prism) {
-
-	var coreRules = '(?:ALPHA|BIT|CHAR|CR|CRLF|CTL|DIGIT|DQUOTE|HEXDIG|HTAB|LF|LWSP|OCTET|SP|VCHAR|WSP)';
-
-	Prism.languages.abnf = {
-		'comment': /;.*/,
-		'string': {
-			pattern: /(?:%[is])?"[^"\n\r]*"/,
-			greedy: true,
-			inside: {
-				'punctuation': /^%[is]/
-			}
-		},
-		'range': {
-			pattern: /%(?:b[01]+-[01]+|d\d+-\d+|x[A-F\d]+-[A-F\d]+)/i,
-			alias: 'number'
-		},
-		'terminal': {
-			pattern: /%(?:b[01]+(?:\.[01]+)*|d\d+(?:\.\d+)*|x[A-F\d]+(?:\.[A-F\d]+)*)/i,
-			alias: 'number'
-		},
-		'repetition': {
-			pattern: /(^|[^\w-])(?:\d*\*\d*|\d+)/,
-			lookbehind: true,
-			alias: 'operator'
-		},
-		'definition': {
-			pattern: /(^[ \t]*)(?:[a-z][\w-]*|<[^<>\r\n]*>)(?=\s*=)/m,
-			lookbehind: true,
-			alias: 'keyword',
-			inside: {
-				'punctuation': /<|>/
-			}
-		},
-		'core-rule': {
-			pattern: RegExp('(?:(^|[^<\\w-])' + coreRules + '|<' + coreRules + '>)(?![\\w-])', 'i'),
-			lookbehind: true,
-			alias: ['rule', 'constant'],
-			inside: {
-				'punctuation': /<|>/
-			}
-		},
-		'rule': {
-			pattern: /(^|[^<\w-])[a-z][\w-]*|<[^<>\r\n]*>/i,
-			lookbehind: true,
-			inside: {
-				'punctuation': /<|>/
-			}
-		},
-		'operator': /=\/?|\//,
-		'punctuation': /[()\[\]]/
-	};
-
-}(Prism));