test: guard storage contract cleanup (#3501)

scripts/check_architecture_migration_rules.sh

@@ -49,6 +49,7 @@ PR_TYPE_HITS_FILE="${TMP_DIR}/pr_type_hits.txt"
 SOURCE_MARKERS_FILE="${TMP_DIR}/source_markers.txt"
 SOURCE_IDS_FILE="${TMP_DIR}/source_ids.txt"
 REGISTER_IDS_FILE="${TMP_DIR}/register_ids.txt"
+LEGACY_STORAGE_API_HITS_FILE="${TMP_DIR}/legacy_storage_api_hits.txt"
 
 awk '
   /^## PR Types$/ {
@@ -186,16 +187,25 @@ require_source_line \
   "pub use error::{StorageErrorCode, StorageResult};" \
   "storage-api public error contract re-export"
 
+(
+  cd "$ROOT_DIR"
+  rg -n --no-heading '\bStorageAPI\b' crates/ecstore/src rustfs/src || true
+) >"$LEGACY_STORAGE_API_HITS_FILE"
+
+if [[ -s "$LEGACY_STORAGE_API_HITS_FILE" ]]; then
+  report_failure "old StorageAPI facade identifier reintroduced in production source: $(paste -sd '; ' "$LEGACY_STORAGE_API_HITS_FILE")"
+fi
+
 require_source_contains \
   "crates/ecstore/src/store_api/traits.rs" \
   "pub trait NamespaceLocking: Send + Sync + Debug + 'static" \
   "separate namespace-locking operation-group trait"
 require_source_contains \
-  "crates/ecstore/tests/storage_api_compat_test.rs" \
+  "crates/ecstore/tests/ecstore_contract_compat_test.rs" \
   "fn ecstore_implements_storage_admin_api_contract()" \
   "ECStore StorageAdminApi compile-time coverage test"
 require_source_contains \
-  "crates/ecstore/tests/storage_api_compat_test.rs" \
+  "crates/ecstore/tests/ecstore_contract_compat_test.rs" \
   "fn ecstore_implements_namespace_locking_contract()" \
   "ECStore NamespaceLocking compile-time coverage test"