♻️ 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/nanoid/index.js

@@ -1,45 +0,0 @@
-import crypto from 'crypto'
-import { urlAlphabet } from './url-alphabet/index.js'
-const POOL_SIZE_MULTIPLIER = 128
-let pool, poolOffset
-let fillPool = bytes => {
-  if (!pool || pool.length < bytes) {
-    pool = Buffer.allocUnsafe(bytes * POOL_SIZE_MULTIPLIER)
-    crypto.randomFillSync(pool)
-    poolOffset = 0
-  } else if (poolOffset + bytes > pool.length) {
-    crypto.randomFillSync(pool)
-    poolOffset = 0
-  }
-  poolOffset += bytes
-}
-let random = bytes => {
-  fillPool((bytes |= 0))
-  return pool.subarray(poolOffset - bytes, poolOffset)
-}
-let customRandom = (alphabet, defaultSize, getRandom) => {
-  let mask = (2 << (31 - Math.clz32((alphabet.length - 1) | 1))) - 1
-  let step = Math.ceil((1.6 * mask * defaultSize) / alphabet.length)
-  return (size = defaultSize) => {
-    let id = ''
-    while (true) {
-      let bytes = getRandom(step)
-      let i = step
-      while (i--) {
-        id += alphabet[bytes[i] & mask] || ''
-        if (id.length === size) return id
-      }
-    }
-  }
-}
-let customAlphabet = (alphabet, size = 21) =>
-  customRandom(alphabet, size, random)
-let nanoid = (size = 21) => {
-  fillPool((size |= 0))
-  let id = ''
-  for (let i = poolOffset - size; i < poolOffset; i++) {
-    id += urlAlphabet[pool[i] & 63]
-  }
-  return id
-}
-export { nanoid, customAlphabet, customRandom, urlAlphabet, random }