Signal & Spark — an independent Hanabi browser adaptation. Source: https://github.com/bstnfrmry/hanabi Commit: 9a9ce26ab14680cc48f7a105c32faec0cf002804 MIT license; see LICENSE.txt. Adapted original classic deck, sequential fireworks, positive/negative hints, final round and scoring. Replaced Firebase/Next host with native ES modules. Added conservative information-only partner and interface. All preferred readable source is included as engine.mjs, app.mjs, style.css and index.html.