/**
 * Ask the xtralab server which of `commands` is currently running inside each
 * open terminal session. Resolves to a map from session name to the matched
 * agent command, or `null` for a session sitting at its prompt.
 *
 * On any failure (endpoint missing on an older server, network error,
 * malformed response) the whole result is `null` — callers should treat that
 * as "detection unavailable" and fall back to the optimistic launch tags
 * rather than clearing any badges.
 */
export declare function fetchRunningAgents(commands: string[]): Promise<Record<string, string | null> | null>;