import { type DrizzleExecutor } from "../drizzle.js";
import { type MessageSummary, type MutationHint } from "../chat/types.js";
/**
 * Fails a running agent turn only for its current worker, retaining the full error and publishing a bounded user-visible failure with terminal chat projections.
 * Fixing the failed status, event kind, and diagnostic reply here prevents worker callers from hiding or reporting an inconsistent terminal outcome.
 */
export declare function agentTurnFail(executor: DrizzleExecutor, input: {
    agentUserId: string;
    actorUserId: string;
    error: string;
    sessionId: string;
    userMessageId: string;
    workerId: string;
}): Promise<{
    message: MessageSummary;
    hint: MutationHint;
} | undefined>;
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