Score arbitrary text against a product profile.

Body: text (required) — content to score product_id (required) — product profile to score against source_hint (optional) — channel label ("gmail", "slack", "discord", "telegram", "linkedin", "whatsapp", etc.) Used for drafting-tone hints only; we do not connect to the source. context (optional) — the conversation the text belongs to: the post a comment replies to, the thread above a Slack message, the email being answered. Up to 2,000 characters. Shown to the judges as background; the score is still about the TEXT's author.

Returns score, role, classification, sub-scores, competitor info, panel_verdict, and a drafting_context block when the score is high enough to act on.