import type { ApprovalState, ApprovalTargetKind } from './store.js';
/**
 * Read surface over `work_item_approvals` (Todos v2 slice 4) — the only storage
 * for approval facts, since PLA-48 dropped the `approval_*` columns from
 * work_items. Every read resolves through the "current row": the PENDING row
 * when one exists (the partial unique index guarantees at most one), else the
 * most recently decided row.
 *
 * This module is deliberately free of work-item runtime imports (types only) so
 * `store.ts` can hydrate a WorkItem's approval fields from it without an import
 * cycle; the WRITE orchestration (request/decide/escalate) stays in `approvals.ts`.
 */
export interface WorkItemApproval {
    id: string;
    workItemId: string;
    state: ApprovalState;
    request: string;
    /** Opaque correlation reference carried by the request contract (sources the
     *  legacy `approvalRef` payload field). */
    ref: string | null;
    /** Offered variants for a CHOICE approval (null = plain approve/reject). */
    options: string[] | null;
    /** The picked option, once an approve decision carried one. */
    choice: string | null;
    /** Reserved for the human operator: no employee may decide it, not the COO
     *  and not through escalation. */
    operatorOnly: boolean;
    target: string | null;
    targetKind: ApprovalTargetKind | null;
    requestedBy: string;
    requestedAt: string;
    escalatedAt: string | null;
    decidedBy: string | null;
    decidedAt: string | null;
    note: string | null;
}
/** Full approval history for one item, oldest request first. */
export declare function listApprovals(workItemId: string): WorkItemApproval[];
/** The item's current approval: the pending row, else the most recently decided. */
export declare function currentApproval(workItemId: string): WorkItemApproval | undefined;
/** Batched current-row lookup — ONE query per ≤500-id chunk, for list pages and
 *  trees (never per item). Items with no approval history are simply absent. */
export declare function currentApprovalsByItem(workItemIds: readonly string[]): Map<string, WorkItemApproval>;
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