import type { A2UICardBindingContextV1, A2UICardBindingSelection, A2UICardDraftBundle, JsonValue } from './types.js';
/** Browser/Node 共用的同步 SHA-256，避免 Contract 引入 node:crypto。 */
export declare function sha256Hex(value: string): string;
export declare function createA2UICardDraftStructureChecksum(draft: A2UICardDraftBundle): string;
export declare function createA2UICardMcpConfigChecksum(resources: JsonValue): string;
export declare function createA2UICardBindingContextChecksum(context: A2UICardBindingContextV1): string;
export declare function createA2UICardRevision(draftChecksum: string, bindings: readonly A2UICardBindingSelection[]): string;
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