@startuml
left to right direction

rectangle "User wants diagram" as user
rectangle "Launch artifact-editor" as launch
rectangle "Text editor (urwid)" as editor
rectangle "AI modify via\ndiscussion-diagram-editor" as ai
rectangle "Render PlantUML" as render
rectangle "Save & exit" as save

user -> launch
launch -> editor
editor -> ai : Press 'AI modify'
ai -> editor : Return modified PlantUML
editor -> render : Auto-render on change
render -> save : User saves
@enduml