fix: expose APP_API_DOMAIN in coruna config for IPA builds

ChannelController already reads coruna.app_api_domain; without the
key the patch can receive an empty host.

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

config/coruna.php

@@ -263,4 +263,7 @@ return [
     // Prefer a copy under bin/ so open_basedir can see it. /usr/bin/ldid
     // still works via proc_open if LDID_PATH points there.
     'ldid_path' => env('LDID_PATH', base_path('bin/ldid')),
+
+    // Host only; builder prepends https://. Used by App IPA patching.
+    'app_api_domain' => trim((string) env('APP_API_DOMAIN', '')),
 ];