--detect-ice-rings did two unrelated jobs at once: flagging ice spots so
indexing de-prioritises them and keeping ice reflections out of the scale fit,
AND gating the merge-time mask that drops a decorrelated ice ring and re-merges.
Turning it off to de-confound a merge-stage experiment therefore also changed
how the data were indexed - measured, that breaks indexing outright on two of
the 37 rotation battery crystals - while leaving it on lets the mask land
differently between two arms of an experiment and contaminate the comparison
(measured on up to 19 of 37 crystals in response to a small intensity change).
Add --ice-ring-mask[=on|off], default on, gating only the merge-time mask.
Verified with =off: ice-spot flagging and the scaling exclusion still log and
still apply, no mask line, no second merge, and the first error model is
bit-identical to the =on arm. The full pipeline and the offline --scale path
reach the same verdict on the same data, as they must.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
leonarski_fandClaude Opus 5
bb7df09086
