Flow execution

A submitted Entry is resolved to an exact immutable Flow version. Work creates functional state; the Flow engine creates a durable FlowRun; Agent steps invoke Runtime; results and events are projected back into Work and Workplace. The canonical behavioral scenarios are Submit Work, Execute Flow, and Execute Tool; the interactive L3 view owns the structural relationships.

Draft Runs retain the exact draft revision, definition hash, and immutable snapshot. Published Runs resolve an immutable semantic Flow version. Continuations create a new FlowRun and link it to the terminal predecessor.