/**
 * Task 1557 — resolve the "home" account of an admin: the `accountId` stamped
 * on their `:AdminUser` node. AdminUser is MERGE-keyed on `userId` alone
 * (neo4j-store.ts), with `accountId` set ON CREATE, so each admin has exactly
 * one node whose `accountId` is the account they were first provisioned under.
 *
 * A profile op whose caller's home account differs from the account the session
 * is scoped to is a house operator working inside a client's sub-account — the
 * preference belongs to that client's owner, not the operator. Returns null when
 * the caller has no `:AdminUser` node or it carries no `accountId`.
 */
export declare function resolveAdminHomeAccount(userId: string): Promise<string | null>;
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