gamekit — reference

The game-layer contract surface, pinned against the phase-1 frozen manifest (graphopt:docs/public_api.md).

• The Board protocol — observe/step, Report, Trajectory, and the three drivers.
• Players & the registry — PlayerSpec, the name→spec table, the make seam, and the shipped roster.
• The frozen API slice — the game rows of the manifest, vendored verbatim.

The domain registry (mlopt_discovery.play.DOMAINS) is a graphopt contract — the Domainshape is frozen, the board contents are domain data.