Make the Matrix QA CLI single-shot exit contract symmetric: artifact-backed failures now print the preserved error, flush stdio, and exit with code 1 instead of waiting on Matrix native handles.
Keep an opt-out for direct test harnesses with OPENCLAW_QA_MATRIX_DISABLE_FORCE_EXIT.
Add the Matrix subagent-thread scenario and route it through the contract runner while preserving the current missing-hook failure as an explicit scenario result.
Give E2EE scenarios isolated rooms and storage keys so lifecycle tests do not reuse stale encrypted state across scenarios.
Introduce a tiny generic qa-runtime seam for shared live-lane helpers and
repoint qa-matrix to it. This keeps the qa-lab host split while removing
the host-owned runtime name from runner code.
Drop the old qa-lab-runtime shim/export now that nothing consumes it and
keep the plugin-sdk surface aligned with the new seam.
Drop the generated qa-runner catalog and the missing/install placeholder
path for repo-private QA runners. The host should discover bundled QA
commands from manifest plus runtime surface only.
Also trim stale qa-matrix install docs and package metadata so the
source-only QA policy stays consistent.
