♻️ 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

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✅ Ready for Easypanel deployment (no root dir needed)

Migration path:
- Old structure: /dealplustech-astro/
- New structure: / (root)

dealplustech-astro/node_modules/prompts/dist/util/entriesToDisplay.js

@@ -1,21 +0,0 @@
-'use strict';
-/**
- * Determine what entries should be displayed on the screen, based on the
- * currently selected index and the maximum visible. Used in list-based
- * prompts like `select` and `multiselect`.
- *
- * @param {number} cursor the currently selected entry
- * @param {number} total the total entries available to display
- * @param {number} [maxVisible] the number of entries that can be displayed
- */
-
-module.exports = (cursor, total, maxVisible) => {
-  maxVisible = maxVisible || total;
-  let startIndex = Math.min(total - maxVisible, cursor - Math.floor(maxVisible / 2));
-  if (startIndex < 0) startIndex = 0;
-  let endIndex = Math.min(startIndex + maxVisible, total);
-  return {
-    startIndex,
-    endIndex
-  };
-};