refactor: Move Astro to root, use PORT env (default 80), allow all hosts

- Move Astro files from dealplustech-astro/ to project root
- Update Dockerfile: PORT environment variable (default 80)
- Add vite.config.ts with allowedHosts: true
- Matches nixpacks behavior for Easypanel deployment
- No hardcoded ports or domains

node_modules/parse-latin/lib/plugin/remove-empty-nodes.js

@@ -0,0 +1,23 @@
+/**
+ * @typedef {import('nlcst').Paragraph} Paragraph
+ * @typedef {import('nlcst').Root} Root
+ */
+
+import {modifyChildren} from 'unist-util-modify-children'
+
+// Remove empty children.
+export const removeEmptyNodes = modifyChildren(
+  /**
+   * @type {import('unist-util-modify-children').Modifier<Paragraph | Root>}
+   */
+
+  function (child, index, parent) {
+    if ('children' in child && child.children.length === 0) {
+      parent.children.splice(index, 1)
+
+      // Next, iterate over the node *now* at the current position (which was the
+      // next node).
+      return index
+    }
+  }
+)