♻️ 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
✅ Cookie consent banner included
✅ 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/semver/ranges/max-satisfying.js

@@ -1,27 +0,0 @@
-'use strict'
-
-const SemVer = require('../classes/semver')
-const Range = require('../classes/range')
-
-const maxSatisfying = (versions, range, options) => {
-  let max = null
-  let maxSV = null
-  let rangeObj = null
-  try {
-    rangeObj = new Range(range, options)
-  } catch (er) {
-    return null
-  }
-  versions.forEach((v) => {
-    if (rangeObj.test(v)) {
-      // satisfies(v, range, options)
-      if (!max || maxSV.compare(v) === -1) {
-        // compare(max, v, true)
-        max = v
-        maxSV = new SemVer(max, options)
-      }
-    }
-  })
-  return max
-}
-module.exports = maxSatisfying