asyncio.timeout was added in Python 3.11, but the project supports >=3.10.
The test_repro_codex_replay_smoke test was crashing on Python 3.10 CI with
"AttributeError: module 'asyncio' has no attribute 'timeout'".
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Add websockets to the dev extra so the repro harness smoke test can import
its websocket client dependency in the CI test matrix. Also apply ruff
formatting to the files the formatter check was rejecting so the 3.12 lint
job passes.
- Route --json output cleanly: JSON goes to stdout (machine-readable),
human-readable summary goes to stderr. Without --json, the human
summary stays on stdout as before. Makes piping the harness into
jq / other tools trivial without losing operator visibility.
- Add distinct exit codes so CI and shell wrappers can branch on the
failure class: 0 success, 1 crash, 2 proxy_unreachable, 3 livez
threshold exceeded, 4 warmup failed, 130 SIGINT (already correct).
Smoke test updated to assert EXIT_PROXY_UNREACHABLE instead of 1.
- Replace flat 50-250ms jitter in the Anthropic-client retry loop with
exponential backoff + 50-150% jitter
(base=250ms, max=5000ms, attempt counter). Matches the proxy's own
jitter_delay_ms helper; inlined to keep the script free of proxy
package imports.
