连接状态管理

public abstract int connect(@NonNull AoqConnectConfig config);

- (int)connect:(AoqConnectConfig * _Nonnull)config;

connect(config: AoqConnectConfig): number;

public abstract int disconnect();

- (int)disconnect;

disconnect(): number;

public void onConnectionStatusChange(
    @NonNull AoqClientEngine.AoqConnectionStatus status) {}

- (void)onConnectionStatusChange:(AoqConnectionStatus)status;

onConnectionStatusChange?: (status: AoqConnectionStatus) => void;

func onConnectionStatusChange(_ status: AoqConnectionStatus) {
    switch status {
    case .connecting:
        print("正在连接...")
    case .connected:
        print("连接成功")
        // 连接成功后可发送 session.update
    case .failed:
        print("连接失败")
        // SDK 会自动迁移到 disconnected，无需手动 disconnect
    case .disconnected:
        print("已断开")
        // 可根据业务决定是否重连
    }
}