Add the command/dialog split to the state-model and interactions docs, declare role dialog and zone facing in the format spec, and let setups declare which dialogs power open interactions.
Describe the format's state model: components as constants, setup as the shape of states, path-to-stack by facing (part affordance x zone restriction), and the stacks-on-paths anchoring scope cut.
Group the bgm spec cluster under docs/bgm and move dev logs and plans under docs/status, add an overview index, and update cross-references in the docs, README, and source comments.
hypercross