♻️ 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

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✅ Ready for Easypanel deployment (no root dir needed)

Migration path:
- Old structure: /dealplustech-astro/
- New structure: / (root)

dealplustech-astro/node_modules/parse-latin/lib/plugin/make-initial-white-space-siblings.js

@@ -1,28 +0,0 @@
-/**
- * @typedef {import('nlcst').Paragraph} Paragraph
- * @typedef {import('nlcst').Root} Root
- */
-
-import {visitChildren} from 'unist-util-visit-children'
-
-// Move white space starting a sentence up, so they are the siblings of
-// sentences.
-export const makeInitialWhiteSpaceSiblings = visitChildren(
-  /**
-   * @type {import('unist-util-visit-children').Visitor<Paragraph | Root>}
-   */
-  function (child, index, parent) {
-    if ('children' in child && child.children) {
-      const head = child.children[0]
-      if (head && head.type === 'WhiteSpaceNode') {
-        child.children.shift()
-        parent.children.splice(index, 0, head)
-        const next = child.children[0]
-
-        if (next && next.position && child.position) {
-          child.position.start = next.position.start
-        }
-      }
-    }
-  }
-)