URL of the wallet's HTTP (SSE) bridge, e.g.
'https://connect.ton.org/bridge'.
HTTPS base of the wallet's universal link, e.g.
'https://app.tonkeeper.com/ton-connect'. The SDK appends the connect
parameters (v, id, r, optional ret, trace_id, e).
Connect via the wallet's HTTP (SSE) bridge plus a universal link.
Both fields are sourced from the wallets list entry — see
wallets-list.md.