import type { Agent, InputBuilder } from '@wrongstack/core/agent';
import type { AttachmentStore } from '@wrongstack/core/types';
import type { Action, State } from '../app-reducer.js';
import { type HeapSample } from '../heap-watchdog.js';
export interface UseTuiActivityOptions {
    status: State['status'];
    fleet: State['fleet'];
    enhanceBusy: boolean;
    thinkingWord: string;
    projectRoot: string;
    stateRef: React.RefObject<State>;
    agentContext: Agent['ctx'];
    dispatch: React.Dispatch<Action>;
    /** Attachment store for RAM-retention sentinels in heap diagnostics. */
    attachments: AttachmentStore;
    /** Input builder ref for RAM-retention sentinels in heap diagnostics. */
    builderRef: React.RefObject<InputBuilder | null>;
}
/**
 * Own the clocks and lightweight activity animation state used by the TUI
 * shell. Keeping these related timers together prevents the app component
 * from accumulating another cluster of lifecycle bookkeeping.
 */
export declare function useTuiActivity({ status, fleet, enhanceBusy, thinkingWord, projectRoot, stateRef, agentContext, dispatch, attachments, builderRef, }: UseTuiActivityOptions): {
    displayThinkingWord: string;
    startedAt: number;
    nowTick: number;
    setNowTick: import("react").Dispatch<import("react").SetStateAction<number>>;
    workingTimeMs: number;
    fleetWorkingTimeMs: number;
    processMemory: HeapSample;
    cpuPercent: number | undefined;
    cpuHistory: number[];
    rssHistory: number[];
    heapHistory: number[];
    totalMem: number;
    enhanceDots: number;
    refreshGoalSummary: () => void;
};
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