Fix: every mode now starts with a tappable Start Game button on the ready screen.
The watch-only AI modes have no on-screen D-pad, so on touch devices (no SPACE key) there was previously no way to begin them. The ready screen now shows a clear Start button that works for every mode. SPACE still works on desktop.
Both editions. Play online: https://spacesquare640.github.io/Snake_Game_Python/