Optional ReadonlyaccountsOptional ReadonlyartifactOpens the verified-artifact cache. Defaults to Cache Storage when the page has it, otherwise none.
Optional ReadonlybridgesOptional ReadonlyeventOptional ReadonlyguardReadonlyhostOptional ReadonlymessagingOptional ReadonlymessagingBackends for the messaging providers; absent ones stay unavailable.
Optional ReadonlypoolOptional ReadonlyrelaysOptional ReadonlythemeTheme pushed to applets that hold theme:read.
Optional ReadonlytorrentThe engine for magnet links when bridges is not given. With one, magnet links download
inside kernl instead of handing off to an app on the device (D-017).
Supplied by the app so it can register its own account types first.