tests/gateway/test_stop_thread_sibling.py::test_sibling_finds_other_users_run_in_same_thread
tests/gateway/test_stop_thread_sibling.py::test_sibling_excludes_callers_own_key
tests/gateway/test_stop_thread_sibling.py::test_sibling_skips_pending_sentinel
tests/gateway/test_stop_thread_sibling.py::test_sibling_does_not_match_different_thread_same_chat
tests/gateway/test_stop_thread_sibling.py::test_sibling_returns_empty_for_non_thread_source
tests/gateway/test_stop_thread_sibling.py::test_stop_interrupts_sibling_thread_run_when_authorized
tests/gateway/test_stop_thread_sibling.py::test_stop_does_not_interrupt_sibling_when_unauthorized