/**
 * Persistent key/value store for facts an agent should remember across
 * sessions — borrower preferences, prior outcomes, learned task history.
 *
 * Distinct from `SessionEntry` (which is the audit log): memory is for
 * *recall*, entries are for *audit*. Memory writes do NOT land in the
 * session log, so they don't pollute prompt context unless the agent
 * explicitly reads them.
 *
 * Tenancy: every operation accepts an optional `tenantId`. Two tenants
 * with the same `key` get isolated values. `tenantId` defaults to the
 * empty string for non-tenant deployments.
 */
export interface SessionMemoryEntry<TValue = unknown> {
    key: string;
    value: TValue;
    tenantId?: string;
    updatedAt: string;
    metadata?: Record<string, unknown>;
    /** ISO timestamp when this entry expires; undefined = no expiry. */
    expiresAt?: string;
}
export interface SessionMemorySetInput<TValue = unknown> {
    key: string;
    value: TValue;
    tenantId?: string;
    metadata?: Record<string, unknown>;
    /** Time-to-live in seconds. When set, expiresAt is computed automatically. */
    ttlSeconds?: number;
}
export interface SessionMemoryFilter {
    tenantId?: string;
    /** Glob-style key prefix filter (e.g. `borrower:*`). */
    keyPrefix?: string;
    /** Newer-than cutoff (ISO timestamp). */
    since?: string;
    /** Cap on returned rows. */
    limit?: number;
}
export interface SessionMemoryGetOptions {
    tenantId?: string;
}
export interface SessionMemory {
    get<TValue = unknown>(key: string, opts?: SessionMemoryGetOptions): Promise<SessionMemoryEntry<TValue> | undefined>;
    set<TValue = unknown>(input: SessionMemorySetInput<TValue>): Promise<void>;
    delete(key: string, opts?: SessionMemoryGetOptions): Promise<void>;
    list(filter?: SessionMemoryFilter): Promise<SessionMemoryEntry[]>;
}
/**
 * Process-local in-memory implementation. Default when `init({ memory })`
 * is not configured — pair with Postgres for durability across restarts.
 */
export declare function inMemorySessionMemory(): SessionMemory;
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