The Niggli character walk takes the first character its tolerance matches, and on a lattice
that is nearly but not exactly hexagonal it matches hexagonal. Under a hexagonal holohedry no
candidate point group can carry the two strongest two-folds the data actually have, so the
search lands on the weakest one and the crystal is processed in a group of order two where it
should have been eight.
The metric group knows better than the character walk: it holds every rotation the cell can
host, including the ones the named lattice system has no room for. Each of those is now put to
the intensities directly - one operator, scored the way Stage A scores its own, on the same
reflection population, with the same strong-reflection gate and the same E^2 cap. That last
part is what makes the answer usable: normalising over the full resolution range of a merge
whose outer shells are correlated junk reads a genuine two-fold at CC 0.05, and the same
operator over the population the pipeline itself pairs reads 0.88.
The flattening and normalising the search does at its start is now one function, so an operator
can be asked about without enumerating a point group around it.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EFEJG6WBQv8th4UJFNe53N
leonarski_fandClaude Opus 5
6773e8516d
