- Remove the "Scaling" stat panel: it queried field 'scaling' that machineGroup
never emits, so it always rendered "No data".
- The "Mode" and "Rel Dist Peak" panels were stripped by the #39 no-duplication
rule because child pumps emit fields of the same name ('mode', 'relDistFromPeak').
But those are the GROUP's own measurement, never a true duplicate of per-pump
series. Mark them emittedFields:[] (the existing "always keep" convention used by
the injected pump panels) so the group-level status/metric renders.
Verified live: MGC dashboard now shows Mode "optimalControl", Abs/Rel Dist Peak.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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