/**
 * Folding route-scoped history into a shell finding.
 *
 * The moment the judge first places a defect in a shell region, its identity
 * stops naming a route, and whatever the backlog already holds about the same
 * defect under route-scoped fingerprints is the same work under old names.
 * Absorbing folds those records into the one shell record, so the defect
 * arrives with its history: its age, its attempts, its evidence, and above
 * all its adjudication, because a by-design ruling somebody wrote must win
 * over a fresh sighting whichever key it was recorded under.
 *
 * Only records that were never asked about their region are eligible. An
 * explicit "content" is an answer, and an answer is never overridden by a
 * later claim about a different screen: if the judge once said a defect was
 * the route's own, a shell claim elsewhere is a different defect until a
 * person says otherwise.
 */
import type { Backlog, BacklogFinding } from "./lib.js";
/** One collapse, for the merge result and the run summary. */
export interface Absorption {
    fingerprint: string;
    from: string[];
}
/**
 * Chronology of run ids. `web-20260831-212625` and `check-20260830-011500`
 * do not sort lexically against each other, but both carry their moment.
 * An id without one sorts oldest, which only ever widens `firstSeen`.
 */
export declare function runOrder(runId: string): string;
/**
 * Fold every legacy sibling of an incoming shell finding into one record at
 * the shell fingerprint, or return undefined when there is nothing to fold.
 * The caller then runs its ordinary state machine against the folded record,
 * so a folded by-design suppresses the sighting and a folded fixed reopens.
 */
export declare function absorbLegacy(backlog: Backlog, f: Pick<BacklogFinding, "fingerprint" | "target" | "route" | "state" | "formFactor" | "scheme" | "category" | "attribute" | "channel"> & {
    region?: BacklogFinding["region"];
}): BacklogFinding | undefined;