import type { ProjectAgentSession } from "@sapiom/agent-map";
import type { HarnessSession } from "../shared/types.js";
export type PersistedIdentityMigration = {
    identity?: ProjectAgentSession;
    outcome: "unchanged" | "migrated" | "rejected";
};
/**
 * Recognizes the infrastructure marker written into durable prompt events by
 * released pre-unification builds. Keep the retired record key isolated here:
 * it is decoder-only compatibility and never participates in live authority.
 */
export declare function isPreUnifiedInfrastructureBootstrapPayload(payload: Record<string, unknown>): boolean;
/**
 * Accepts the final neutral shape plus the frozen pre-cutover session shape.
 * Retired role, assignment, and project-bootstrap fields are discarded and
 * never become authority.
 */
export declare function migratePersistedProjectIdentity(session: HarnessSession): PersistedIdentityMigration;
export declare function removeLegacyProjectSessionMetadata(session: HarnessSession): void;
//# sourceMappingURL=project-session-legacy-migration.d.ts.map