Tests:
- tests/test_commands.py: unit coverage for Commands/AsyncCommands —
payload construction (cwd, envs, tag, timeout), background dispatch,
base64 response decoding, stream-event parsing, stream/connect iterators.
- tests/test_integration_advanced.py: live tests for cwd/env handling,
long-running commands (apt-get), PTY sessions, streaming exec,
process connect, and git workflows including cloning wrennhq/wrenn.
- test_filesystem_pty.py: PTY ping/pong reply tests.
- test_integration.py: poll for async process-registry prune in
test_kill_process instead of asserting on a zero-delay list().
Fixes:
- commands.py / pty.py: stream(), connect() and the PTY iterators only
caught WebSocketDisconnect. The server closes exec/process streams
abruptly, raising WebSocketNetworkError — a sibling under
HTTPXWSException — which crashed connect() entirely. Both are now
caught via _WS_CLOSED so abrupt closes end iteration cleanly.
- pty.py: reply to the server keepalive ping with a pong so idle PTY
sessions stay open.
