/** SQLite repository for immutable, bounded graph-owned context snapshots. */
import type { ContextSnapshotAccessor, ContextSnapshotRecord, ContextSnapshotSaveInput, ContextSnapshotSaveResult } from '../context-snapshot-types.js';
import type { DataStore } from '@opensip-cli/datastore';
export declare const MAX_CONTEXT_SNAPSHOT_PAYLOAD_BYTES: number;
export declare const MAX_CONTEXT_SNAPSHOTS_PER_KIND = 3;
export declare const MAX_CONTEXT_SNAPSHOT_TOTAL_BYTES: number;
/** Concrete repository; only graph persistence/read files import this class. */
export declare class ContextSnapshotRepo {
    private readonly datastore;
    constructor(datastore: DataStore);
    save(input: ContextSnapshotSaveInput, retentionProtectedIds?: readonly string[]): ContextSnapshotSaveResult;
    get(id: string): ContextSnapshotRecord | null;
    /** @throws {ValidationError} When the requested snapshot kind is invalid. */
    latest(kind: string): ContextSnapshotRecord | null;
    private pruneInTransaction;
    /**
     * @throws {ValidationError} When protected snapshots alone exceed the per-kind retention limit.
     */
    private pruneKindInTransaction;
    /**
     * @throws {ValidationError} When protected snapshots alone exceed the aggregate byte limit.
     */
    private pruneTotalBytesInTransaction;
}
/** Lazy structural accessor installed on the graph RunScope contribution. */
export declare function createContextSnapshotAccessor(): ContextSnapshotAccessor;
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