/**
 * A validating `splitDualLinkKey` for consumers of `@ancientpantheon/pythia-client` —
 * a port of the private, unvalidated `splitDualLinkKey` in
 * `apps/pythia/src/connectors/auth/dualLinkCache.ts` (that version trusts its
 * caller to have already length-checked the key). This SDK version is fed
 * directly by pasted user input in a UI form, so it validates everything
 * itself and throws a message naming the SPECIFIC problem rather than
 * silently slicing a malformed string.
 */
/** The length (chars) of one Apollo account half (standard OR smart) within a
 * composite `dual-link-key`. Mirrors `apps/pythia`'s `APOLLO_ACCOUNT_LEN` —
 * `packages/pythia-client` can't import from `apps/pythia` (separate
 * package), so this is a small, deliberate duplication of the constant. */
export declare const APOLLO_ACCOUNT_LEN = 162;
/** The separator a composite `dual-link-key` is built with
 * (`standard || DUAL_LINK_BAR || smart`). Must stay byte-identical to the
 * on-chain `CT_Bar` value (see `dualLinkCache.ts`'s `PYTHIA_DUAL_LINK_BAR`). */
export declare const DUAL_LINK_BAR = "|";
export interface DualLinkHalves {
    standardApollo: string;
    smartApollo: string;
}
/**
 * Split and validate a composite `dual-link-key` (`standard || "|" || smart`,
 * 325 chars) into its two Apollo-account halves. Throws
 * {@link PythiaConnectorValidationError} — with a message naming the specific
 * problem, so a UI form can show something genuinely useful — on any
 * malformed shape: wrong total length, a missing/misplaced separator, or a
 * half that doesn't start with the expected ₱/Π codepoint.
 */
export declare function splitDualLinkKey(dualLinkKey: string): DualLinkHalves;