Uploads a resume file, parses it, and creates a new candidate on the given position from the extracted data (name, contact info, work history, education, etc.), returning the created candidate.

Send the resume as multipart/form-data with a required resume field. The candidate is placed into the pipeline stage identified by the stage_id query parameter (defaults to applied); set stage_actions_enabled=true to trigger that stage's configured automations/webhooks. Returns an error if a candidate already exists on this position, or if the file can't be parsed (corrupted, password-protected, unsupported format, or the parsing service is temporarily unavailable).