♻️ 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/mdast-util-to-markdown/lib/util/association.js

@@ -1,33 +0,0 @@
-/**
- * @import {AssociationId} from '../types.js'
- */
-
-import {decodeString} from 'micromark-util-decode-string'
-
-/**
- * Get an identifier from an association to match it to others.
- *
- * Associations are nodes that match to something else through an ID:
- * <https://github.com/syntax-tree/mdast#association>.
- *
- * The `label` of an association is the string value: character escapes and
- * references work, and casing is intact.
- * The `identifier` is used to match one association to another:
- * controversially, character escapes and references don’t work in this
- * matching: `&copy;` does not match `©`, and `\+` does not match `+`.
- *
- * But casing is ignored (and whitespace) is trimmed and collapsed: ` A\nb`
- * matches `a b`.
- * So, we do prefer the label when figuring out how we’re going to serialize:
- * it has whitespace, casing, and we can ignore most useless character
- * escapes and all character references.
- *
- * @type {AssociationId}
- */
-export function association(node) {
-  if (node.label || !node.identifier) {
-    return node.label || ''
-  }
-
-  return decodeString(node.identifier)
-}