/**
 * runtime-store — build and read the runtime.json index snapshot (G-026 M1).
 *
 * runtime.json is a DERIVED index (ADR-0004 #10): its truth comes from
 * events.jsonl + attempt dirs on disk. After a crash, reconciliation rebuilds
 * the index from those sources rather than trusting the snapshot blindly.
 */
import { type AttemptMeta, type AttemptResultStatus, type CleanupIncident, type ResourceLease, type RuntimeSnapshot, type TaskRuntimeLayout } from "./file-layout.js";
/**
 * Rebuild the full runtime snapshot from events + attempt dirs + incidents.
 * This is what reconciliation produces after a crash (source of truth wins).
 */
export declare function rebuildSnapshot(layout: TaskRuntimeLayout): Promise<RuntimeSnapshot>;
/** Read attempt.json (static meta) if present. */
export declare function readAttemptMeta(layout: TaskRuntimeLayout, taskId: string, attemptId: string): Promise<AttemptMeta | null>;
/** Read lease.json (immutable resource lease) if present. */
export declare function readLease(layout: TaskRuntimeLayout, taskId: string, attemptId: string): Promise<ResourceLease | null>;
/** Read incident.json for an incident dir. */
export declare function readIncident(layout: TaskRuntimeLayout, incidentId: string): Promise<CleanupIncident | null>;
/** Ensure attempt dir with stub metadata exists (idempotent). */
export declare function ensureAttemptDir(layout: TaskRuntimeLayout, meta: AttemptMeta): Promise<void>;
/** Persist a resource lease under the attempt dir (immutable: refuse overwrite). */
export declare function writeLease(layout: TaskRuntimeLayout, taskId: string, attemptId: string, lease: ResourceLease, opts?: {
    overwrite?: boolean;
}): Promise<void>;
/** Persist an incident under incidents/<id>/ (first-class entity). */
export declare function writeIncident(layout: TaskRuntimeLayout, incident: CleanupIncident): Promise<void>;
/** Resolve a task's latest attempt id from its attempts dir. */
export declare function latestAttemptId(layout: TaskRuntimeLayout, taskId: string): Promise<string | null>;
export type { AttemptResultStatus as RuntimeResultStatus };