OIDC session status.
The operation currently in progress.
Decoded id_token claims while signed in, otherwise null.
Wallet-leg status.
The wallet address once known (after connect/unlock), otherwise null.
The user's wallet list (multi-wallet foundation, docs/28). Derived from
the wallet_accounts claim — present as soon as the user is signed in,
before any wallet connect — with the ceremony-learned address as the
fallback for a brand-new wallet whose token predates the binding. Today
at most one entry (kind: 'mpc'), the default entry, whose address
walletAddress reports once the wallet leg is connected.
The full observable client state, delivered synchronously via
UpbondClient.stateand tosubscribelisteners on every change.