Replaced txt by Loaders

tests/test_async_save.gd

@@ -88,6 +88,15 @@ func run() -> void:
     manager.flush_saves()
     check(E.eq(manager.load_data("incompatible", "test-password").state, data.state), "New format saves and reloads after incompatible file")
 
+    var readable_path: String = directory.path_join("readable-incompatible.adventure")
+    var readable = FileAccess.open_encrypted_with_pass(readable_path, FileAccess.WRITE, "test-password")
+    readable.store_var(manager._snapshot("readable-incompatible", "test-password", data).payload, false)
+    readable.close()
+    manager.blocked_saves["readable-incompatible"] = true
+    check(manager.archive_incompatible_save("readable-incompatible"), "Readable incompatible save is archived")
+    check((not FileAccess.file_exists(readable_path)) and FileAccess.file_exists(E.add(readable_path, ".incompatible.bak")), "Archived save no longer occupies the active path")
+    check(not manager.blocked_saves.has("readable-incompatible"), "Archiving an incompatible save permits a fresh save")
+
     # Expected failures below must leave the last good encrypted file intact.
     data.state.energy = E.neg(1)
     manager.request_save("latest", "test-password", data)