tests/lint/repository/structure/test_python_file_size.py caps a Python file at 500 lines and asks for a split rather than a raised limit, and engine.py reached 522 once the network claim took a lock. engine.py keeps the engine client, the labels, EngineError and the compose backend at 273 lines; swarm.py takes the swarm backend at 258.
The methods moved verbatim, so nothing changes behaviour. swarm.py imports the labels and the error from engine while engine imports nothing back, which is what the first attempt got wrong: a Pool mixin, following the build_queue.py precedent, would have made the two modules import each other. server.py splits its import, and agents.py reads only labels so it is untouched.
The pool tests follow the code into test_swarm.py, the mirrored path test_mirrored_unit_tests.py asks for, and test_engine.py keeps the transport, connect and compose cases.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
kevinveenbirkenbachandClaude Opus 5
466c89b2b5