A translated label beside a fixed-width control could run over its neighbours: the Layers
Lock/Fill row guarded only the redundant "Lock:" caption, so "Fill:" ("Заливка:" in Russian,
longer still as pt-br "Preenchimento:" / fr "Remplissage :") overlapped the lock icons.
Rather than a per-row fit check, add the one shared primitive for fixed chrome:
`widgets::elided_label(ui, text, max_w)` lays the text out no wider than its room, cuts it with
'…' and puts the full string on hover (built on the existing `tab_strip::elided`). The
Opacity/Fill scrub labels now elide to the room beside their field, so any translation shrinks
instead of overlapping, in every locale.
Documented the rule in docs/ui-design.md: wrap by default; beside a fixed control, elide; a
redundant caption may drop on a narrow dock (the lock icons carry the meaning).
Test: widgets::tests::elided_label_never_exceeds_its_room. Full photocraft-ui-egui suite: 2077
pass; fmt and clippy clean.
Scott C Hughes
6ca04e5afa