♻️ 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/functions/cmp.js

@@ -1,54 +0,0 @@
-'use strict'
-
-const eq = require('./eq')
-const neq = require('./neq')
-const gt = require('./gt')
-const gte = require('./gte')
-const lt = require('./lt')
-const lte = require('./lte')
-
-const cmp = (a, op, b, loose) => {
-  switch (op) {
-    case '===':
-      if (typeof a === 'object') {
-        a = a.version
-      }
-      if (typeof b === 'object') {
-        b = b.version
-      }
-      return a === b
-
-    case '!==':
-      if (typeof a === 'object') {
-        a = a.version
-      }
-      if (typeof b === 'object') {
-        b = b.version
-      }
-      return a !== b
-
-    case '':
-    case '=':
-    case '==':
-      return eq(a, b, loose)
-
-    case '!=':
-      return neq(a, b, loose)
-
-    case '>':
-      return gt(a, b, loose)
-
-    case '>=':
-      return gte(a, b, loose)
-
-    case '<':
-      return lt(a, b, loose)
-
-    case '<=':
-      return lte(a, b, loose)
-
-    default:
-      throw new TypeError(`Invalid operator: ${op}`)
-  }
-}
-module.exports = cmp