lichess-org/lichobile ? reverse-engineered prompt

Build me the mobile Lichess app so I can use lichess.org on iPhone and Android from one codebase.

I want a clean app that opens the Lichess experience in a mobile friendly way, lets me browse and play chess, and handles the chess engine locally when needed, including support for variants. It should feel like the official app, work in a browser for testing, and be able to run on both Android and iOS through the native wrappers. Please make sure the app can talk to the native features it needs, and that the Stockfish setup works too.

Set it up so I can install dependencies, build the web app, sync it to the mobile platforms, and run it locally on a device or emulator. If anything depends on current docs or platform setup details, look those up online and wire it up correctly. Also make sure the project builds cleanly and the basic screens and navigation work without obvious bugs.