Stockfish.js, GPL-3.0
Upstream source and build instructions: https://github.com/nmrugg/stockfish.js/tree/v17.1.0
Source archive: https://github.com/nmrugg/stockfish.js/archive/refs/tags/v17.1.0.tar.gz
Worker adapter and modified Emscripten factory: https://github.com/frontierstudiosxyz/reboot_labs/tree/main/stockfishapi/apps/api/src/engine
Engine: stockfish-17-lite-single.wasm, copied from the repository's previously vendored Stockfish.js v17.1.0 distribution. Factory adaptation removes browser/Node entrypoints and instantiates the precompiled WebAssembly module through Workers. The engine binary is unchanged.