♻️ 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/chalk/source/utilities.js

@@ -1,33 +0,0 @@
-// TODO: When targeting Node.js 16, use `String.prototype.replaceAll`.
-export function stringReplaceAll(string, substring, replacer) {
-	let index = string.indexOf(substring);
-	if (index === -1) {
-		return string;
-	}
-
-	const substringLength = substring.length;
-	let endIndex = 0;
-	let returnValue = '';
-	do {
-		returnValue += string.slice(endIndex, index) + substring + replacer;
-		endIndex = index + substringLength;
-		index = string.indexOf(substring, endIndex);
-	} while (index !== -1);
-
-	returnValue += string.slice(endIndex);
-	return returnValue;
-}
-
-export function stringEncaseCRLFWithFirstIndex(string, prefix, postfix, index) {
-	let endIndex = 0;
-	let returnValue = '';
-	do {
-		const gotCR = string[index - 1] === '\r';
-		returnValue += string.slice(endIndex, (gotCR ? index - 1 : index)) + prefix + (gotCR ? '\r\n' : '\n') + postfix;
-		endIndex = index + 1;
-		index = string.indexOf('\n', endIndex);
-	} while (index !== -1);
-
-	returnValue += string.slice(endIndex);
-	return returnValue;
-}