♻️ 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/postcss/lib/processor.js

@@ -1,67 +0,0 @@
-'use strict'
-
-let Document = require('./document')
-let LazyResult = require('./lazy-result')
-let NoWorkResult = require('./no-work-result')
-let Root = require('./root')
-
-class Processor {
-  constructor(plugins = []) {
-    this.version = '8.5.6'
-    this.plugins = this.normalize(plugins)
-  }
-
-  normalize(plugins) {
-    let normalized = []
-    for (let i of plugins) {
-      if (i.postcss === true) {
-        i = i()
-      } else if (i.postcss) {
-        i = i.postcss
-      }
-
-      if (typeof i === 'object' && Array.isArray(i.plugins)) {
-        normalized = normalized.concat(i.plugins)
-      } else if (typeof i === 'object' && i.postcssPlugin) {
-        normalized.push(i)
-      } else if (typeof i === 'function') {
-        normalized.push(i)
-      } else if (typeof i === 'object' && (i.parse || i.stringify)) {
-        if (process.env.NODE_ENV !== 'production') {
-          throw new Error(
-            'PostCSS syntaxes cannot be used as plugins. Instead, please use ' +
-              'one of the syntax/parser/stringifier options as outlined ' +
-              'in your PostCSS runner documentation.'
-          )
-        }
-      } else {
-        throw new Error(i + ' is not a PostCSS plugin')
-      }
-    }
-    return normalized
-  }
-
-  process(css, opts = {}) {
-    if (
-      !this.plugins.length &&
-      !opts.parser &&
-      !opts.stringifier &&
-      !opts.syntax
-    ) {
-      return new NoWorkResult(this, css, opts)
-    } else {
-      return new LazyResult(this, css, opts)
-    }
-  }
-
-  use(plugin) {
-    this.plugins = this.plugins.concat(this.normalize([plugin]))
-    return this
-  }
-}
-
-module.exports = Processor
-Processor.default = Processor
-
-Root.registerProcessor(Processor)
-Document.registerProcessor(Processor)