-# Rufina — Upstream Source Investigation
+# Rufina — Source Metadata Investigation
-**Designer**: Martin Sommaruga
**Model**: Claude Opus 4.6
**Date**: 2026-03-12
-## Summary
+## Source Repository
-No canonical upstream repository with UFO or Glyphs source files was found for Rufina. The FONTLOG indicates that sources exist only in VFB and SFD format from the old Google Code repository, which does not qualify as a usable upstream per policy.
+The `googlefontdirectory-hg` monorepo (the historical Google Font Directory Mercurial archive) contains files for this family.
-## Investigation
+- **Repository**: `googlefontdirectory-hg`
+- **Commit**: `52f780bc9d197280a9f430574e179a5f233c56b6`
+- **Source path**: `rufina/src/`
+
+## Source Files
+
+The `rufina/src/` directory contains design sources in VFB (FontLab) and SFD (FontForge) formats, neither of which can be built with gftools-builder:
+
+- **VFB** (FontLab, proprietary format, not buildable with gftools): Rufina-Bold-OTF.vfb, Rufina-Bold.vfb, Rufina-Regular-OTF.vfb, Rufina-Regular.vfb
+- **SFD** (FontForge, not buildable with gftools-builder): Rufina-Bold-TTF.sfd, Rufina-Regular-TTF.sfd
+- **OTF** (compiled binaries, not design sources): Rufina-Bold.otf, Rufina-Regular.otf
+
+## Buildability
+
+Not buildable with gftools-builder. The sources are in VFB (FontLab proprietary) and SFD (FontForge) formats. Neither format is supported by gftools-builder. Conversion to UFO or Glyphs format would be required.
+
+## Designer
+
+Martin Sommaruga
+
+## Investigation Details
The FONTLOG.txt describes two source files:
1. `Rufina-Regular-OTF.vfb` — FontLab VFB format
- `estudiotrama` GitHub organization/user
No GitHub user or organization named `estudiotrama` was found. The only repositories matching "Rufina" were unrelated (Discord bots, random repos) or the `librefonts/rufina` mirror (skipped per policy).
-
-## Conclusion
-
-No canonical upstream repository with editable UFO or Glyphs sources was found for Rufina. The original sources are in VFB/SFD format only (skip per policy). No source block was added to METADATA.pb.