Port a game between runtimes in small steps

A runtime migration should begin with a tiny acceptance example. Verify a clean build, one image, input and a restart before importing the full project.

Separate the game rules from platform integration. A board update or movement calculation can be tested independently while rendering, audio and packaging are adapted.

Record setup friction and the assumptions the new runtime changes. A successful installation is only the beginning; behavior needs to be checked with the same input sequence on both implementations.