configureChat options reference
configureChat can be called more than once — sections merge into the previous call.
Helpers: getUiConfig() (fully resolved), getUiConfigPartial() (raw host overrides), resolveChatUiConfig(partial), mergeChatUiStyles, mergeChatInfoPartial, DEFAULT_CHAT_UI, DEFAULT_CHAT_FONTS, getFonts(), getThemeConfig(), getCallUri(), getAccentHex(), getCustomAccent(), resolveAccentOption(), applyColorOverrides(), getConfiguredAppearanceDefaults(), applyEnvChatConfigFallback(), isChatConfigured().