pub const LOGO_SOURCE: &str = "fanarttv-logo";Expand description
The name a logo is stored under — not SOURCE, though the same request
answers both.
A portrait and a logo are two different claims about the same artist,
fetched by fetch --portraits and fetch --logos on their own schedules,
and a record that carried both could not be re-fetched for one without
silently dropping the other — Sources::set replaces a record whole, it
does not merge fields into it. Keeping them as two records under two names
is what lets each pass redo its own work without undoing the other’s — the
same reasoning, and the same fix, as crate::wikipedia::PORTRAIT_SOURCE.