Chuda contains symbol data and algorithmic work derived from Chafa.
Chafa is copyright its contributors, including Hans Petter Jansson, and is
licensed under the GNU Lesser General Public License version 3 or later.
The required reference source and its copyright notices are retained under
`vendor/chafa/`.
The generated symbol atlas in `src/symbols.rs` records its Chafa origin and is
regenerated by `tools/generate_symbols.py` from the vendored Chafa symbol
definitions.