♻️ 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/semver/internal/identifiers.js

@@ -1,29 +0,0 @@
-'use strict'
-
-const numeric = /^[0-9]+$/
-const compareIdentifiers = (a, b) => {
-  if (typeof a === 'number' && typeof b === 'number') {
-    return a === b ? 0 : a < b ? -1 : 1
-  }
-
-  const anum = numeric.test(a)
-  const bnum = numeric.test(b)
-
-  if (anum && bnum) {
-    a = +a
-    b = +b
-  }
-
-  return a === b ? 0
-    : (anum && !bnum) ? -1
-    : (bnum && !anum) ? 1
-    : a < b ? -1
-    : 1
-}
-
-const rcompareIdentifiers = (a, b) => compareIdentifiers(b, a)
-
-module.exports = {
-  compareIdentifiers,
-  rcompareIdentifiers,
-}