♻️ 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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✅ 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-flow.js

@@ -1,35 +0,0 @@
-(function (Prism) {
-	Prism.languages.flow = Prism.languages.extend('javascript', {});
-
-	Prism.languages.insertBefore('flow', 'keyword', {
-		'type': [
-			{
-				pattern: /\b(?:[Bb]oolean|Function|[Nn]umber|[Ss]tring|[Ss]ymbol|any|mixed|null|void)\b/,
-				alias: 'class-name'
-			}
-		]
-	});
-	Prism.languages.flow['function-variable'].pattern = /(?!\s)[_$a-z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*(?=\s*=\s*(?:function\b|(?:\([^()]*\)(?:\s*:\s*\w+)?|(?!\s)[_$a-z\xA0-\uFFFF](?:(?!\s)[$\w\xA0-\uFFFF])*)\s*=>))/i;
-	delete Prism.languages.flow['parameter'];
-
-	Prism.languages.insertBefore('flow', 'operator', {
-		'flow-punctuation': {
-			pattern: /\{\||\|\}/,
-			alias: 'punctuation'
-		}
-	});
-
-	if (!Array.isArray(Prism.languages.flow.keyword)) {
-		Prism.languages.flow.keyword = [Prism.languages.flow.keyword];
-	}
-	Prism.languages.flow.keyword.unshift(
-		{
-			pattern: /(^|[^$]\b)(?:Class|declare|opaque|type)\b(?!\$)/,
-			lookbehind: true
-		},
-		{
-			pattern: /(^|[^$]\B)\$(?:Diff|Enum|Exact|Keys|ObjMap|PropertyType|Record|Shape|Subtype|Supertype|await)\b(?!\$)/,
-			lookbehind: true
-		}
-	);
-}(Prism));