import { type AgentReplyPart } from "@mono-agent/agent-contracts";
export type ReplyPartBudgetClaim = "accepted" | "duplicate" | "limit";
export interface ReplyPartBudget {
    claim(runId: string, stableIdentity: string): ReplyPartBudgetClaim;
    unclaim(runId: string, stableIdentity: string): void;
    release(runId: string): void;
}
/**
 * One request-scoped count/deduplication budget shared by every rich-part
 * producer composed by agent-app. Part payloads remain owned by their producer;
 * this object carries only stable identities and a bounded count.
 */
export declare function createReplyPartBudget(maxParts?: number): ReplyPartBudget;
/** Preserve first-seen producer order while removing retry duplicates. */
export declare function mergeReplyParts(existing: readonly AgentReplyPart[] | undefined, produced: readonly AgentReplyPart[]): readonly AgentReplyPart[];
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