Add jevos

[feder-cr]

What are you adding or changing, and what does it do?

Adding jevos to the "Open Models and Compatible Servers" section (data/open-models.yaml). It's an open-source, MIT-licensed alternative to Jev for yes/no decisions that runs fully offline on a laptop CPU (one forward pass, no text generation), speaking Jev's /v1/systemone wire format so TypeSafe's official SDK works unchanged for yes/no questions.

Affiliation: Yes, I'm one of the authors (Federico Elia, @feder-cr).

• I edited a file in data/ and ran uv run scripts/build.py (no hand edits to README.md or scenarios/).
• The link points to the original source, not another list or directory.
• The description says what it does, starts with a capital letter, and ends with a period.
• Any image is hotlinked from the project's own pages. (No custom image added; falls back to the GitHub repo's automatic preview card, per contributing.md.)

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