♻️ 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/postcss/lib/list.js

@@ -1,58 +0,0 @@
-'use strict'
-
-let list = {
-  comma(string) {
-    return list.split(string, [','], true)
-  },
-
-  space(string) {
-    let spaces = [' ', '\n', '\t']
-    return list.split(string, spaces)
-  },
-
-  split(string, separators, last) {
-    let array = []
-    let current = ''
-    let split = false
-
-    let func = 0
-    let inQuote = false
-    let prevQuote = ''
-    let escape = false
-
-    for (let letter of string) {
-      if (escape) {
-        escape = false
-      } else if (letter === '\\') {
-        escape = true
-      } else if (inQuote) {
-        if (letter === prevQuote) {
-          inQuote = false
-        }
-      } else if (letter === '"' || letter === "'") {
-        inQuote = true
-        prevQuote = letter
-      } else if (letter === '(') {
-        func += 1
-      } else if (letter === ')') {
-        if (func > 0) func -= 1
-      } else if (func === 0) {
-        if (separators.includes(letter)) split = true
-      }
-
-      if (split) {
-        if (current !== '') array.push(current.trim())
-        current = ''
-        split = false
-      } else {
-        current += letter
-      }
-    }
-
-    if (last || current !== '') array.push(current.trim())
-    return array
-  }
-}
-
-module.exports = list
-list.default = list