OptionalbooleanWhether the client supports boolean session configuration options.
Optional. Omitted or null both mean the client does not advertise support.
Supplying {} means agents may include type: "boolean" entries in
configOptions, and the client may send session/set_config_option
requests with type: "boolean" and a boolean value.
Optional_The _meta property is reserved by ACP to allow clients and agents to attach additional metadata to their interactions. Implementations MUST NOT make assumptions about values at these keys.
See protocol docs: Extensibility
Session configuration option capabilities supported by the client.