tests/gateway/test_max_concurrent_sessions.py::test_new_session_gets_clean_error_at_active_session_limit
tests/gateway/test_max_concurrent_sessions.py::test_existing_active_session_uses_busy_handling_at_limit
tests/gateway/test_max_concurrent_sessions.py::test_new_session_can_start_after_active_session_released
tests/gateway/test_max_concurrent_sessions.py::test_status_command_bypasses_active_session_limit
tests/gateway/test_max_concurrent_sessions.py::test_skill_command_that_would_start_agent_is_blocked_at_limit