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

dealplustech-astro/node_modules/parse-latin/lib/plugin/merge-initial-word-symbol.js

@@ -1,47 +0,0 @@
-/**
- * @typedef {import('nlcst').Sentence} Sentence
- */
-
-import {toString} from 'nlcst-to-string'
-import {modifyChildren} from 'unist-util-modify-children'
-
-// Merge certain punctuation marks into their following words.
-export const mergeInitialWordSymbol = modifyChildren(
-  /**
-   * @type {import('unist-util-modify-children').Modifier<Sentence>}
-   */
-  function (child, index, parent) {
-    if (
-      (child.type !== 'SymbolNode' && child.type !== 'PunctuationNode') ||
-      toString(child) !== '&'
-    ) {
-      return
-    }
-
-    const children = parent.children
-    const next = children[index + 1]
-
-    // If either a previous word, or no following word, exists, exit early.
-    if (
-      (index > 0 && children[index - 1].type === 'WordNode') ||
-      !(next && next.type === 'WordNode')
-    ) {
-      return
-    }
-
-    // Remove `child` from parent.
-    children.splice(index, 1)
-
-    // Add the punctuation mark at the start of the next node.
-    next.children.unshift(child)
-
-    // Update position.
-    if (next.position && child.position) {
-      next.position.start = child.position.start
-    }
-
-    // Next, iterate over the node at the previous position, as it's now adjacent
-    // to a following word.
-    return index - 1
-  }
-)