♻️ 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/astro/components/Debug.astro

@@ -1,62 +0,0 @@
----
-import Code from './Code.astro';
-
-const key = Object.keys(Astro.props)[0];
-const value = Astro.props[key];
----
-
-<div class="astro-debug">
-	<div class="astro-debug-header">
-		<h2 class="astro-debug-title">
-			<span class="astro-debug-label">Debug</span>
-			<span class="astro-debug-name">"{key}"</span>
-		</h2>
-	</div>
-
-	<Code code={JSON.stringify(value, null, 2)} />
-</div>
-
-<style is:inline>
-	.astro-debug {
-		font-size: 14px;
-		padding: 1rem 1.5rem;
-		background: white;
-		font-family:
-			-apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans',
-			'Helvetica Neue', sans-serif;
-	}
-
-	.astro-debug-header,
-	pre.astro-code {
-		margin: -1rem -1.5rem 1rem;
-		padding: 0.25rem 0.75rem;
-	}
-
-	.astro-debug-header {
-		background: #ff1639;
-		border-radius: 4px;
-		border-bottom-left-radius: 0;
-		border-bottom-right-radius: 0;
-	}
-
-	.astro-debug-title {
-		font-size: 1em;
-		color: white;
-		margin: 0.5em 0;
-	}
-
-	.astro-debug-label {
-		font-weight: bold;
-		text-transform: uppercase;
-		margin-right: 0.75em;
-	}
-
-	pre.astro-code {
-		border: 1px solid #eee;
-		padding: 1rem 0.75rem;
-		border-radius: 4px;
-		border-top-left-radius: 0;
-		border-top-right-radius: 0;
-		font-size: 14px;
-	}
-</style>