CycleCreate

Request to start a new cycle.

Field	Type	Description
`blueprint_id`required	`string (uuid)`	Workplan UUID
`input_data`	`object`	Input data for the cycle show nested Empty object.
`priority`	`integer`	Execution priority (1=highest)
`topic_id`	`string (uuid) \| null`	Optional Topic UUID this cycle belongs to. Stamped onto workstreams.cycle.topic_id so topic→run linkage resolves (the reverse link of platform.topics.workstream_id). NULL for cycles launched outside a topic context — no behaviour change.