Get Portfolio State

Get the current state of all or filtered accounts portfolio.

Args: filter_request: JSON payload with filtering criteria including: - account_names: Optional list of account names to filter by - connector_names: Optional list of connector names to filter by - skip_gateway: If True, skip Gateway wallet balance updates for faster CEX-only queries - refresh: If True, refresh balances before returning. If False (default), return cached state

Returns: Dict containing account states with connector balances and token information