♻️ 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/escape-string-regexp/index.js

@@ -1,11 +0,0 @@
-export default function escapeStringRegexp(string) {
-	if (typeof string !== 'string') {
-		throw new TypeError('Expected a string');
-	}
-
-	// Escape characters with special meaning either inside or outside character sets.
-	// Use a simple backslash escape when it’s always valid, and a `\xnn` escape when the simpler form would be disallowed by Unicode patterns’ stricter grammar.
-	return string
-		.replace(/[|\\{}()[\]^$+*?.]/g, '\\$&')
-		.replace(/-/g, '\\x2d');
-}