/** One thing the harness did, as it reported it. The producer pins this shape
    on the wire; the receiver reads it as sent. */
export type WorkbenchEvent = {
    kind: "step-start";
    step: number;
    maxSteps: number;
    activeTools: readonly string[];
} | {
    kind: "step-end";
    step: number;
    stopReason: string;
    durationMs: number;
    usage?: {
        inputTokens?: number;
        outputTokens?: number;
    };
} | {
    kind: "tool";
    step: number;
    toolCallId: string;
    name: string;
    argsPreview: string;
    status: "ok" | "denied" | "error";
    guard?: "run" | "ask" | "block";
    approval?: "auto" | "approved" | "timed-out" | "denied";
    durationMs: number;
} | {
    kind: "context";
    estTokens: number;
    windowTokens: number;
    triggerTokens: number;
} | {
    kind: "compaction";
    reason: "trigger" | "overflow-retry";
    summary: string;
} | {
    kind: "shed";
    dropped: number;
} | {
    kind: "loadout";
    active: readonly string[];
    searchedIn: readonly string[];
    alwaysActive: readonly string[];
    withheldCount: number;
} | {
    kind: "subagent";
    label: string;
    steps: number;
    maxSteps: number;
    report?: string;
} | {
    kind: "error";
    code: string;
    message: string;
} | {
    kind: "step-limit";
    steps: number;
};
/** One event, addressed: whose turn, where in it, and which agent spoke. */
export type WorkbenchPart = {
    turnId: string;
    seq: number;
    at: number;
    agent: "resident" | "screen" | "subagent";
    event: WorkbenchEvent;
};
/** One turn's parts, oldest `seq` first. */
export interface WorkbenchTurn {
    turnId: string;
    parts: readonly WorkbenchPart[];
}
/** One `onData` chunk, offered. Anything that is not a debug part is ignored,
 *  so the caller needs no branch of its own. */
export declare function publishWorkbenchPart(chunk: {
    type: string;
    data?: unknown;
}): void;
export declare function subscribeWorkbench(listener: () => void): () => void;
export declare function workbenchFeed(): readonly WorkbenchTurn[];
/** Test/host teardown: forget every turn. */
export declare function resetWorkbench(): void;
/** Every turn the harness has reported diagnostics for, oldest turn first. */
export declare function useWorkbenchFeed(): readonly WorkbenchTurn[];