export declare const ACTIVE_RUN_STATE_EVENT = "agent-chat:active-run-state-change";
export interface ActiveRunState {
    threadId: string;
    runId: string;
    lastSeq: number;
    activityTool?: string | null;
}
export interface PendingTurnState {
    threadId: string;
    turnId: string;
}
export declare function setActiveRun(state: ActiveRunState): void;
export declare function getActiveRun(): ActiveRunState | null;
export declare function updateActiveRunSeq(seq: number): void;
export declare function updateActiveRunActivity(toolName: string | null | undefined): void;
export declare function getActiveRunActivityTool(threadId: string, runId: string): string | null;
export declare function clearActiveRun(): void;
export declare function clearActiveRunIfMatches(threadId: string, runId: string): void;
export declare function setPendingTurn(state: PendingTurnState): void;
export declare function getPendingTurn(threadId: string): PendingTurnState | null;
export declare function clearPendingTurnIfMatches(threadId: string, turnId?: string): void;
/** Resume reconnect SSE after the last seen event (0 = replay from the start). */
export declare function resolveReconnectAfterSeq(threadId: string, runId: string): number;
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