Hot swap everything
- everything, simple as
/kjs reload startup-scripts - how: JS contents live inside mutable boxes / entries registered in vanilla registries; on reload, new instances swap the inner reference in-place, so every existing reference (even saved iotas) picks up new behaviors instantly
- covers: actions (entry action & prototype replaced in-place), special handlers, iota types
- not for those haven't created on startup, but it's possible to match later-created pattern actions using a special handler :3
