/**
 * Personalization — a persisted profile per subject (user id,
 * account id, device). The agent reads it on every run to
 * condition responses; the runtime updates it when new facts
 * appear.
 */
interface PersonalizationProfile {
    subjectId: string;
    /** Human-editable notes, facts, preferences. */
    traits: Record<string, unknown>;
    /** ISO timestamp of the latest update. */
    updatedAt: string;
}
interface PersonalizationStore {
    get: (subjectId: string) => Promise<PersonalizationProfile | null>;
    set: (profile: PersonalizationProfile) => Promise<void>;
    merge: (subjectId: string, traits: Record<string, unknown>) => Promise<PersonalizationProfile>;
    delete?: (subjectId: string) => Promise<void>;
}
/**
 * In-memory personalization store — tests, single-process demos.
 * Bring your own for production (Postgres, Redis, DynamoDB).
 */
declare function createInMemoryPersonalization(): PersonalizationStore;
/**
 * Render a profile into a system-prompt fragment the runtime can
 * prepend. Kept intentionally short — full profile dumps bloat
 * context and leak unnecessary detail to the model.
 */
declare function renderProfileContext(profile: PersonalizationProfile | null): string;

export { type PersonalizationProfile, type PersonalizationStore, createInMemoryPersonalization, renderProfileContext };