Interface WorkflowDefinition

name is a lake-id-segment (^[a-z0-9][a-z0-9-]*$) that interpolates into every deployed document id (<tag>.<name>.v<version>) — stable identity that instances pin to and subworkflows resolve by. lifecycle: 'child' marks a spawn-only definition, instantiated by a parent via an action's spawn, never started cold from a picker (omitted ⇒ 'standalone', startable); advisory only — consumers filter start pickers on it (see isStartableDefinition), the engine does not itself refuse a startInstance on a 'child' definition. start is meaningless (deploy-rejected) on a spawn-only definition; omitted, it means interactive semantics with no predicates. predicates are nullary named conditions — each name: groq entry is pre-evaluated and bound as the boolean $name var; redefining a built-in var is a deploy error, never a silent shadow.