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/mdast-util-to-hast/lib/handlers/link-reference.d.ts

@@ -0,0 +1,15 @@
+/**
+ * Turn an mdast `linkReference` node into hast.
+ *
+ * @param {State} state
+ *   Info passed around.
+ * @param {LinkReference} node
+ *   mdast node.
+ * @returns {Array<ElementContent> | ElementContent}
+ *   hast node.
+ */
+export function linkReference(state: State, node: LinkReference): Array<ElementContent> | ElementContent;
+import type { State } from '../state.js';
+import type { LinkReference } from 'mdast';
+import type { ElementContent } from 'hast';
+//# sourceMappingURL=link-reference.d.ts.map