Variable MOCK_RELAYS`Const`

MOCK_RELAYS: Readonly<
    {
        discovery: "wss://discovery.example.org";
        primary: "wss://relay-a.example.org";
        secondary: "wss://relay-b.example.net";
        tertiary: "wss://relay-c.example.com";
    },
> = ...

Example relay URLs used throughout the fixtures.