Save As suggested `.dxf` for every untitled drawing, so saving new work as
DWG meant typing the extension each time. AutoCAD keeps this choice in
Options > Open and Save > "Save as".
- File > Default Save Format > DXF / DWG sets the format Save As suggests
for drawings that have no file yet. Drawings opened from a file keep that
file's format, as before. DXF stays the default.
- The choice is saved across restarts with the other preferences
(`saveFormat`), survives Reset Palettes, and is scriptable as
`ui.saveformat {format}` or the `saveFormat` UiState field.
- Ukrainian labels for the new menu entries.
On macOS the suggested `.dwg` name needs DWG in the Save As filter list
(#198) to survive the dialog.
Claude-Session: https://claude.ai/code/session_019uMCkRAB8DMd8MEmoY9Vyr
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>