Initial Ladill Transfer app — file sharing with QR links.

Scaffolded from the Ladill mini/events extraction pattern: multi-file transfers,
retention controls, public landing pages, analytics, and Gitea deploy workflow.

Co-authored-by: Cursor <cursoragent@cursor.com>

config/mobile-topbar.php

@@ -0,0 +1,5 @@
+<?php
+
+return [
+    'app_name' => 'Transfer',
+];