- CandidateResponse: add pros/cons string|null fields - CandidateForm: add pros/cons to FormData, INITIAL_FORM, pre-fill, payload - CandidateForm: add Pros/Cons textarea inputs (after Notes, before Product Link) - CandidateCard: add pros/cons props, render purple +/- Notes badge when present - Thread detail route: pass pros/cons props to CandidateCard