Module handler 

Binance Spot WebSocket API message handler.

The handler runs in a dedicated Tokio task as the I/O boundary between the client orchestrator and the network layer. It exclusively owns the WebSocketClient and processes commands from the client via an unbounded channel.

Key Responsibilities

• Command processing: Receives HandlerCommand from client, serializes to JSON requests.
• Response decoding: Parses SBE binary responses using schema 3 decoders.
• Request correlation: Matches responses to pending requests by ID.
• Message transformation: Emits NautilusWsApiMessage events to client via channel.

Structs

BinanceSpotWsApiHandler

Binance Spot WebSocket API handler.