This reverts commit f257d51ea.
The block-wise moving-shadow mask fixed its one target (a half-image
lysozyme set whose pin turns with the sample) but fired on 47 sets of
the full battery: on one small-molecule set the mask covered 51 % of
the detector and SHELXL R1 doubled (0.10 -> 0.20), on another the mask
grew from 8 to 21 %. The pre-scan cost rose by +87 s on the HDF5 sets
and +499 s on the CBF sets (the commit claimed +0.1 s / +1-5 s per set).
A narrowed version (regr2-mask) still costs +25-45 s battery-wide, about
+0.3 s per HDF5 set, for one difficult set - more than the owner's
budget allows. It is parked for rc176, where a moved shadow is to be
found by a far-end check of the early decisions instead.
The documentation paragraph the commit added goes with it.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SVmAWnzCmRKAXVUCdc4iNi
leonarski_fandClaude Opus 5.5
c6412819ba
