feat: consolidate iOS with API and web preserving history

ios/scripts/deploy-backend.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+# Retained path for historical references; fail closed after monorepo migration.
+set -euo pipefail
+printf '%s\n' 'This legacy iOS backend deployment script is disabled.' 'Use the protected root scripts/deploy-unraid.sh workflow after reading QUALIFICATION.md.' >&2
+exit 1