I have a fairly empty dev.edn/local.edn but :duct.migrator/ragtime seems only to run after dev/prep/go, but not in production running a stock main.cljs

is that the expected behavior or am I doing something silly?

It's expected behaviour. To run migrations in production, pass the :duct/migrator key, e.g. lein run :duct/migrator.

The reason for this is that you don't want nodes to migrate automatically if you have multiple nodes.

aha, I see that now in the docs. that worked perfectly. thanks!

np