♻️ 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/dateparts/seconds.js

@@ -1,29 +0,0 @@
-'use strict';
-
-const DatePart = require('./datepart');
-
-class Seconds extends DatePart {
-  constructor(opts = {}) {
-    super(opts);
-  }
-
-  up() {
-    this.date.setSeconds(this.date.getSeconds() + 1);
-  }
-
-  down() {
-    this.date.setSeconds(this.date.getSeconds() - 1);
-  }
-
-  setTo(val) {
-    this.date.setSeconds(parseInt(val.substr(-2)));
-  }
-
-  toString() {
-    let s = this.date.getSeconds();
-    return this.token.length > 1 ? String(s).padStart(2, '0') : s;
-  }
-
-}
-
-module.exports = Seconds;