vidya-symbols.ttf is a glyph subset of DejaVu Sans.

DejaVu fonts are based on the Bitstream Vera fonts, with additional
characters. License (summary): free to use, modify, and redistribute;
must not use Bitstream/DejaVu names to endorse derived works without
permission. Full text: https://dejavu-fonts.github.io/License.html

Generated with fonttools pyftsubset for UI punctuation/symbols,
common math-in-prose Unicode (Greek, letterlike ℕℤℚℝℂ, superscripts/
subscripts, mathematical operators), and box drawing / block elements
(U+2500–U+259F) for profile ASCII art. Rebuild:
`scripts/rebuild-symbols-ttf.sh`.

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Color emoji pack `assets/emoji/twemoji-72x72.zip` is from Twemoji
(https://github.com/jdecked/twemoji), Copyright Twitter, Inc. and other
contributors. Licensed under Creative Commons Attribution 4.0 International
(CC-BY 4.0): https://creativecommons.org/licenses/by/4.0/

Graphics adapted for embedding; attribution required.