♻️ 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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✅ Ready for Easypanel deployment (no root dir needed)

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

dealplustech-astro/node_modules/nanoid/bin/nanoid.cjs

@@ -1,55 +0,0 @@
-#!/usr/bin/env node
-
-let { nanoid, customAlphabet } = require('..')
-
-function print(msg) {
-  process.stdout.write(msg + '\n')
-}
-
-function error(msg) {
-  process.stderr.write(msg + '\n')
-  process.exit(1)
-}
-
-if (process.argv.includes('--help') || process.argv.includes('-h')) {
-  print(`
-  Usage
-    $ nanoid [options]
-
-  Options
-    -s, --size       Generated ID size
-    -a, --alphabet   Alphabet to use
-    -h, --help       Show this help
-
-  Examples
-    $ nanoid --s 15
-    S9sBF77U6sDB8Yg
-
-    $ nanoid --size 10 --alphabet abc
-    bcabababca`)
-  process.exit()
-}
-
-let alphabet, size
-for (let i = 2; i < process.argv.length; i++) {
-  let arg = process.argv[i]
-  if (arg === '--size' || arg === '-s') {
-    size = Number(process.argv[i + 1])
-    i += 1
-    if (Number.isNaN(size) || size <= 0) {
-      error('Size must be positive integer')
-    }
-  } else if (arg === '--alphabet' || arg === '-a') {
-    alphabet = process.argv[i + 1]
-    i += 1
-  } else {
-    error('Unknown argument ' + arg)
-  }
-}
-
-if (alphabet) {
-  let customNanoid = customAlphabet(alphabet, size)
-  print(customNanoid())
-} else {
-  print(nanoid(size))
-}