♻️ 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/prompts/lib/util/clear.js

@@ -1,22 +0,0 @@
-'use strict';
-
-const strip = require('./strip');
-const { erase, cursor } = require('sisteransi');
-
-const width = str => [...strip(str)].length;
-
-/**
- * @param {string} prompt
- * @param {number} perLine
- */
-module.exports = function(prompt, perLine) {
-  if (!perLine) return erase.line + cursor.to(0);
-
-  let rows = 0;
-  const lines = prompt.split(/\r?\n/);
-  for (let line of lines) {
-    rows += 1 + Math.floor(Math.max(width(line) - 1, 0) / perLine);
-  }
-
-  return erase.lines(rows);
-};