Branding is already returned by GET /public/settings (the `brand` block:
name/colors/logo/hero/favicon, per-shard from BRAND_*). §8.6 of the Android
plan asks to confirm it — this makes it a first-class part of the contract so
the app's OpenAPI codegen produces typed branding instead of an untyped map.
- Swagger: add Brand + PublicSettings schemas; /public/settings now references
PublicSettings (was additionalProperties:true). Brand documents that asset
fields may be site-relative paths (resolve against the base URL).
- test/publicBrand.test.js locks the brand theming contract the app depends on
(all fields present; BRAND_* defaults; admin site_title/contact_email
overrides; accentInt never leaked).
No behavior change to the response — it already carried `brand`; this types and
guards it.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NgyHnrNa8WwG3doxvxjuCr
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