Function can_interact 

fn can_interact() -> bool

Whether we may prompt the user.

Reads BW_NOINTERACTION strictly (== "true"), matching the legacy CLI. The --nointeraction flag on crate::command::Cli is not honored here: it is never threaded into ClientContext, so no BwCommand can see it today. Plumbing it through touches every command’s dispatch signature — out of scope for this command; needs its own ticket.