Spec-v2 screens generator: runs at BUILD time inside the host project (under
mob_dev's host-config audit) and emits three route entries per Ash resource,
each pointing at a shared parameterized screen with the resource module as
route-bound :params (delivered to mount/3 by core navigation).
Summary
Functions
The three route entries for one resource (pure; public for tests).
Emits [%{module, default_route, params}] for every resource of every configured domain.