import type { SessionAttemptOutcome } from '../shared/types.js';
/**
 * What a Todo's execution attempts say, and as of when.
 *
 * The reconciler derives status from linked sessions; this module decides which
 * of them still get to speak. It also settles the run ledger from the same
 * receipts, because the two readings must agree about what an attempt did.
 */
/** Session lifecycle states, mirrored from `Session.status` in shared/types.ts. */
export type SessionStatus = 'idle' | 'running' | 'error' | 'waiting' | 'interrupted';
export interface WorkItemAttemptEvidence {
    status: SessionStatus;
    outcome: SessionAttemptOutcome | null;
}
/** What a Todo's attempts say, and what the operator said last. */
export interface WorkItemAttemptReading {
    /** The receipts still entitled to speak, newest-first. */
    attempts: WorkItemAttemptEvidence[];
    /** When the operator last moved this Todo himself, if he ever has. Attempts at
     *  or before it were dropped; an empty `attempts` alongside it means nothing
     *  has happened since he decided. */
    humanDecisionAt?: string;
}
/**
 * The receipts a Todo's status may be derived from, newest-first (the ordering
 * `listSessionsByWorkItem` returns and `deriveWorkItemStatus` relies on).
 * Settles the run ledger on the way through, for every non-phase attempt —
 * bookkeeping about a finished attempt stays true regardless of whether that
 * attempt still counts as evidence.
 */
export declare function collectAttemptEvidence(workItemId: string): WorkItemAttemptReading;
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