peer-discovery-404 imports workspace/a2a_client.py which depends on
httpx; the runner's stock Python doesn't have it, so the replay's
PARSE assertion (b) fails with ModuleNotFoundError on every run. The
WIRE assertion (a) — pure curl — passes, so the failure was masking
just enough to make the replay LOOK partially-broken when the tenant
side is fine.
Adding tests/harness/requirements.txt with only httpx instead of
sourcing workspace/requirements.txt: that file pulls a2a-sdk,
langchain-core, opentelemetry, sqlalchemy, temporalio, etc. — ~30s
of install for one replay's PARSE step. The harness's deps surface
should grow when a new replay introduces a new import, not by
default.
Workflow gains one step (`pip install -r tests/harness/requirements.txt`)
between the /etc/hosts setup and run-all-replays. No other changes.
c8b17ea1ad