Shows previously-used combinations of lookup nomenclature values above
the Additional Data fields in both the new-vehicle and edit forms.
Clicking a row merges the combination into the current values, so
free-text fields the operator already typed are preserved.
NomenclatureContext now fans extra_combination events out to
subscribers; without that they hit the unknown-object warning and were
dropped, so deletes would not have reached other open tabs.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
gitea
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