Package-level declarations

The pet behavior modules: every .lua file under the pet_behaviors folder, the shipped defaults among them.

The shipped behavior modules on disk: writing one into the pet_behaviors folder, as load asks its writer to, and clearing what an interrupted write left there.

One line of a pet file's behaviors list: a module by its file name, and the settings this creature gives it.

A module's declared setting defaults with one creature's values on top, and the table Lua reads them from.

Values from a pet file written back the way the file would write them, for warnings server owners read.

Logs a failed pet Mind callback once per program, callback and kind of failure until clear, which each load calls: a module failing on every tick of a hundred pets says so once.

One Mind program per species and variant, assembled from the catalog's modules and built once, with the settings each module reads as c.settings.