forgectrl 25cf969 lets status.c link without the cooling engine (the
image build compiles the status host tests), so the pin moves to it;
verified with bitbake -c fetch. offset_probe.py joins the bench-page
registry (survey, ladder and jog; the armed dwell stays a hand-run mode)
and takes "survey" as a mode word.
The pin carries the compensation (cool_aa_offset_counts, the
aa-offset-calibrate diagnostic, the panel's Apply); verified with
bitbake -c fetch. The catalog gains cooling.aa-offset-calibrate, which
runs the tool and checks its recommendation and spread.
scripts/bench/offset_probe.py is the differential probe that found the
source: one actuator switched at a time with both sensors at 25 Hz
(survey), the air-assist duty ladder, the gantry jogging under the fan,
and an armed dark dwell. CAMPAIGN-LOG records the four probes and the
result; BRINGUP item 21 names the setting and the calibrate as what
remains on this machine, and item 23 opens the initial commissioning
procedure.
No catalog consequence beyond the new case: a bench tool and records.