What the driver runs
build/score_all.py measures Fidus Writer from out/fidus. build/run_all.sh runs harness/fidus/roundtrip.mts inside the @fiduswriter/document tree, not inside the full Fidus Writer application. This note does not publish a new round-trip percentage for that output.
What it is
@fiduswriter/document is the document schema plus importers and exporters. The harness uses the DOCX importer and the DOCX exporter from that package.
Trivia
The license is AGPL-3.0. The README lists export targets of JATS, HTML, LaTeX, Pandoc JSON, EPUB, DOCX, and ODT. DOCX and ODT accept an uploaded template; the built-in defaults are named Classic (DOCX) and Free (ODT). A browser demo of the package, including a schema viewer, is at fiduswriter.pages.fiduswriter.org.