currentConfig

The WalletConfig the user last acted on, or a network-only default if the panel never bootstrapped yet. The full-screen overlay host (WalletOverlayHost) needs this to drive Send: the proving mode / proof-server URL live in the pill's local state, not in the host, so the host reads back the config the pill already built. By the time Send is reachable the pill has called refreshBalance (which sets lastRequestedConfig), so this is non-null in practice; the fallback just keeps the contract total.