♻️ 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-aspnet.js

@@ -1,48 +0,0 @@
-Prism.languages.aspnet = Prism.languages.extend('markup', {
-	'page-directive': {
-		pattern: /<%\s*@.*%>/,
-		alias: 'tag',
-		inside: {
-			'page-directive': {
-				pattern: /<%\s*@\s*(?:Assembly|Control|Implements|Import|Master(?:Type)?|OutputCache|Page|PreviousPageType|Reference|Register)?|%>/i,
-				alias: 'tag'
-			},
-			rest: Prism.languages.markup.tag.inside
-		}
-	},
-	'directive': {
-		pattern: /<%.*%>/,
-		alias: 'tag',
-		inside: {
-			'directive': {
-				pattern: /<%\s*?[$=%#:]{0,2}|%>/,
-				alias: 'tag'
-			},
-			rest: Prism.languages.csharp
-		}
-	}
-});
-// Regexp copied from prism-markup, with a negative look-ahead added
-Prism.languages.aspnet.tag.pattern = /<(?!%)\/?[^\s>\/]+(?:\s+[^\s>\/=]+(?:=(?:("|')(?:\\[\s\S]|(?!\1)[^\\])*\1|[^\s'">=]+))?)*\s*\/?>/;
-
-// match directives of attribute value foo="<% Bar %>"
-Prism.languages.insertBefore('inside', 'punctuation', {
-	'directive': Prism.languages.aspnet['directive']
-}, Prism.languages.aspnet.tag.inside['attr-value']);
-
-Prism.languages.insertBefore('aspnet', 'comment', {
-	'asp-comment': {
-		pattern: /<%--[\s\S]*?--%>/,
-		alias: ['asp', 'comment']
-	}
-});
-
-// script runat="server" contains csharp, not javascript
-Prism.languages.insertBefore('aspnet', Prism.languages.javascript ? 'script' : 'tag', {
-	'asp-script': {
-		pattern: /(<script(?=.*runat=['"]?server\b)[^>]*>)[\s\S]*?(?=<\/script>)/i,
-		lookbehind: true,
-		alias: ['asp', 'script'],
-		inside: Prism.languages.csharp || {}
-	}
-});