forked from 1b-agent/opencadstudio-upstream
- plot dialog: the web build defaults to 'Save to PDF file...' (its only output choice); native dropdowns and defaults are untouched. - on_plot_dlg_commit forces to_file on wasm so a stale page setup can no longer route the web build into the (unreachable) printer path; both preview branches now go through preview_page_pdf, which is identical to the old inline temp-PDF + OS-viewer flow on desktop. - Print ribbon / PRINTALL on wasm render the PDF and open it in a tab instead of erroring; PrintAllPdf picks a virtual path and downloads. - pdf_plot_options maps the dialog's Quality dropdown into PdfPlotOptions.