Shows two client-construction patterns: TradingClient::new for one wallet and TradingClient::from_infrastructure for wallets sharing RPC and SWQoS clients.

This is a configuration template. Set PRIVATE_KEY, RPC, and every enabled provider credential; it initializes network clients but does not submit a trade.

cargo run --package trading_client

Initialize the client before subscribing to events. Do not construct it in a trading callback.