tests/gateway/test_kanban_watchers_mixin.py::test_mixin_defines_kanban_methods
tests/gateway/test_kanban_watchers_mixin.py::test_gateway_runner_inherits_mixin
tests/gateway/test_kanban_watchers_mixin.py::test_watcher_loops_are_coroutines
tests/gateway/test_kanban_watchers_mixin.py::test_singleton_dispatcher_lock_is_exclusive