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/transfer.php

@@ -0,0 +1,15 @@
+<?php
+
+return [
+    // GHS per GB per month of retention (see qr-suite-decomposition.md §7.3).
+    'price_per_gb_month' => (float) env('TRANSFER_PRICE_PER_GB_MONTH', 1.0),
+
+    // Max single-file upload size (bytes). Default 500 MB.
+    'max_file_bytes' => (int) env('TRANSFER_MAX_FILE_BYTES', 524288000),
+
+    // Max files per transfer.
+    'max_files_per_transfer' => (int) env('TRANSFER_MAX_FILES', 20),
+
+    // Default retention when not specified (days).
+    'default_retention_days' => (int) env('TRANSFER_DEFAULT_RETENTION_DAYS', 30),
+];