import type { SemanticTone } from "../../ui/status-dot.js";
import type { RailSession } from "./session-list-entry.js";
/**
 * Everything the sidebar hover says about one session, derived only from the
 * compact list row. Every field is null (or empty) when the row has nothing
 * true to say, so the card never shows an empty label or a zero count.
 */
export type SessionHoverFacts = {
    status: {
        label: string;
        tone: SemanticTone;
        live: boolean;
    };
    /** Short lines that explain the status: how long it has waited, when it checks next, who paused it. */
    context: string[];
    /** The agent's own waiting reason or the pause reason, verbatim. */
    reason: string | null;
    origin: {
        kind: "schedule" | "site";
        label: string;
    } | null;
    model: {
        id: string;
        effort: string | null;
    } | null;
    subAgents: {
        total: string;
        parts: {
            label: string;
            tone: "attention" | "danger" | null;
        }[];
    } | null;
    commands: string | null;
};
/** How long since `iso`, as a duration that keeps reading as one: "<1 min", "24 min", "3 hours", "2 days". */
export declare function formatWaitDuration(iso: string, now: number): string | null;
/** "Next check at 14:30", "Next check tomorrow, 09:00", or "Next check due now". */
export declare function nextCheckLabel(deadlineAt: string, now: number): string | null;
export declare function sessionHoverFacts(session: RailSession, { descendantCount, descendantCountTruncated, now, }: {
    descendantCount: number;
    descendantCountTruncated: boolean;
    now?: number | undefined;
}): SessionHoverFacts;
/**
 * The hover's facts as one plain sentence list, for the row's accessible
 * description. The row's name already carries its title, state and creator, so
 * this adds only what the card adds, in the same order.
 */
export declare function sessionHoverDescription(facts: SessionHoverFacts): string;