/**
 * Field-level degradation guards for the payloads the panel renders (spec §2.4):
 * the client does not exhaustively validate the union — it narrows, then
 * degrades per field. Unknown/missing values render as `unknown`, never as
 * guessed values.
 *
 * This module ALSO carries the one place that validates the picker's untrusted
 * wire answer exhaustively: {@link parseSelectWorkflowResult} turns the
 * `/api/mstar/selectWorkflow` envelope into the panel's explicit state, so a
 * malformed or foreign answer degrades to `unavailable` — never to a
 * half-parsed acknowledgement.
 */
/** String field: non-empty string, else null (missing → `unknown`). */
export declare function str(value: unknown): string | null;
/** Boolean field: real boolean, else null. */
export declare function bool(value: unknown): boolean | null;
/** Count field: finite number, else null. */
export declare function count(value: unknown): number | null;
/** Plain-object record (null and arrays are not records), else null. */
export declare function record(value: unknown): Record<string, unknown> | null;
/** One workflow-pick acknowledgement (the `selectWorkflow` wire result). */
export type MstarSelectWorkflowFetch = {
    readonly status: 'selected';
    readonly sessionId: string;
    readonly workflowId: string;
} | {
    readonly status: 'unavailable';
    readonly reason: string;
};
/**
 * Validate one `/api/mstar/selectWorkflow` response into the picker's state.
 *
 * The whole envelope is untrusted: the transport result, the endpoint result and
 * the acknowledged identity are all checked. A success MUST name the session AND the workflow this client asked
 * for — a foreign acknowledgement is refused rather than rendered as this
 * session's pick.
 *
 * @param raw - the value returned by `connection.rpc.call` (untrusted).
 * @param sessionId - the session this client ASKED for.
 * @param workflowId - the workflow id this client asked to select.
 * @returns the acknowledged pick, or the explicit unavailable state.
 */
export declare function parseSelectWorkflowResult(raw: unknown, sessionId: string, workflowId: string): MstarSelectWorkflowFetch;