Update Brand Kit

Purpose

Keep a brand kit correct and rich by talking to the user. A brand kit is the canonical context an ad/content-generation pipeline reads, so what's in it directly shapes every downstream generation. Reach for this whenever the user wants to set or refine brand positioning/voice/audience, add standing do/don't guidance, manage the product list, or attach product photos.

This skill is the portable domain model — the fields, the semantics, the rules. How you actually persist a change is the host's concern: a brand-kit API, a CLI, or a brand-kit document in a workspace. The field model, semantics, and caps below hold regardless of which backend stores the kit.

Inputs