Flowy: composition renders

Rendering turns a composition timeline (Remotion project JSON) into a final video — the last step of an end-to-end video pipeline. Tools:

• start_render — submit a composition. Args: project (the timeline JSON, required), project_id (optional canvas project to attach the render to). Async: returns a workflow_id.
• get_render — one render by workflow_id, in any status (processing | completed | failed). Use this to watch a job.
• list_renders — recent renders with their video URLs (newest first); filter by project_id.

Workflow