/**
 * Branded ID types for the QAR wire vocabulary.
 *
 * `MessageId` / `SessionId` / `TaskId` are UUID strings on the wire (UUIDv7
 * for `MessageId` per QAR's protocol module). They're branded here so the
 * compiler stops consumers from mixing them up at API boundaries.
 *
 * `ToolCallId` is a free-form string assigned by the LLM provider; not a UUID.
 */
declare const Brand: unique symbol;
type Branded<T, B extends string> = T & {
    readonly [Brand]: B;
};
export type MessageId = Branded<string, 'MessageId'>;
export type SessionId = Branded<string, 'SessionId'>;
export type TaskId = Branded<string, 'TaskId'>;
export type ToolCallId = Branded<string, 'ToolCallId'>;
export {};
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