The Save As dialog listed DXF, SVG, PNG and PDF, though CADCraft writes
DWG. On macOS the dialog accepts only listed extensions, so a name typed as
`part.dwg` was changed to .dxf and the drawing was saved as DXF.
Save As now lists "Drawing (DWG)" too. The existing suggested-type-first
ordering does the rest: a drawing opened from DWG defaults to DWG, while new
drawings and DXF files keep DXF first. The list moves into
`filters_for_save` with a unit test, and the label gets its Ukrainian
translation following "Drawing (DXF)".
Related to #14 (the Open half was fixed in #21).
Claude-Session: https://claude.ai/code/session_019uMCkRAB8DMd8MEmoY9Vyr
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
afe8b93255