**Model**: Claude Opus 4.6

# Yeseva One — Upstream Source Investigation

## Summary

The upstream source repository for Yeseva One was identified and a source block was added to `METADATA.pb`.

## Repository

- **URL**: https://github.com/alexeiva/yesevaone
- **Owner**: Alexei Vanyashin (alexeiva)
- **Designer**: Jovanny Lemonad
- **Source format**: Glyphs (`YesevaOne.glyphs`)
- **Branch**: master
- **Commit**: `0d609f6155ed0fe1d822696135ffbd04b88fd017`
- **Commit date**: 2016-12-13
- **Commit message**: "Merge pull request #2 from m4rc1e/master — Updated copyright string"

## Investigation Notes

The repository was found at `alexeiva/yesevaone` by searching for "Jovanny Lemonad font" on GitHub. The repository description stated "open-source font by Jovanny Lemonad". The `sources/` directory contained a single `YesevaOne.glyphs` file. The repository is not a fork and was last updated in June 2023. Alexei Vanyashin (alexeiva) appears to be the maintainer who hosted the upstream source on behalf of the original designer Jovanny Lemonad.

## Confidence

High — the repository description explicitly credits Jovanny Lemonad as the font designer, and the Glyphs source matches the expected single-weight display font.