♻️ 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/mdast-util-to-hast/lib/handlers/list.js

@@ -1,52 +0,0 @@
-/**
- * @import {Element, Properties} from 'hast'
- * @import {List} from 'mdast'
- * @import {State} from '../state.js'
- */
-
-/**
- * Turn an mdast `list` node into hast.
- *
- * @param {State} state
- *   Info passed around.
- * @param {List} node
- *   mdast node.
- * @returns {Element}
- *   hast node.
- */
-export function list(state, node) {
-  /** @type {Properties} */
-  const properties = {}
-  const results = state.all(node)
-  let index = -1
-
-  if (typeof node.start === 'number' && node.start !== 1) {
-    properties.start = node.start
-  }
-
-  // Like GitHub, add a class for custom styling.
-  while (++index < results.length) {
-    const child = results[index]
-
-    if (
-      child.type === 'element' &&
-      child.tagName === 'li' &&
-      child.properties &&
-      Array.isArray(child.properties.className) &&
-      child.properties.className.includes('task-list-item')
-    ) {
-      properties.className = ['contains-task-list']
-      break
-    }
-  }
-
-  /** @type {Element} */
-  const result = {
-    type: 'element',
-    tagName: node.ordered ? 'ol' : 'ul',
-    properties,
-    children: state.wrap(results, true)
-  }
-  state.patch(node, result)
-  return state.applyData(node, result)
-}