/company/{id}/position/{id}/candidate/{id}/stage

Moves the candidate to a different stage in the position's pipeline, identified by stage_id.

stage_id must match a stage in that position's pipeline (falling back to the company's default pipeline); an unknown stage id fails the request. Every successful move records a stage-change activity and fires the corresponding webhook. Moving into a stage with configured actions (e.g., HRIS/onboarding integrations) also triggers those integrations, and moving into a "Hired"-type stage marks the candidate hired. Returns no content (204) on success.