Closes Molecule-AI/molecule-controlplane#253.
Prevents recurrence of the 5-hour staging outage from 2026-04-24:
molecule-ai-workspace-runtime 0.1.13 declared `a2a-sdk<1.0` in its
metadata but actually imported `a2a.server.routes` (1.0+ only). pip
resolved successfully; every tenant workspace crashed at import. The
canary tenant ultimately caught it but only after 5 hours of degraded
staging. PR #249 fixed the version pin manually; nothing automated
catches the same class of bug for the next release.
This workflow:
- Installs molecule-ai-workspace-runtime fresh from PyPI in a Python
3.11 venv (mirrors EC2 user-data install pattern)
- Layers in workspace/requirements.txt (the runtime image's actual
dep set, including the a2a-sdk[http-server]>=1.0,<2.0 pin)
- Runs `from molecule_runtime.main import main_sync` — same import
the runtime entrypoint does
- Fails CI if pip resolution silently produced a combo that the
runtime can't actually import
Triggers:
- PR + push to main/staging touching workspace/requirements.txt or
this workflow (catches local pin changes)
- Daily 13:00 UTC schedule (catches upstream PyPI publishes that
break the pin combo without any change in our repo)
- workflow_dispatch (manual)
Concurrency cancels in-progress runs on the same ref.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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