/**
 * claim_task tool — Atomically claim a pending task for an agent.
 *
 * Sets the task status to "claimed" and records the assignee.
 * Fails if the task is already claimed, in progress, or in a terminal state.
 * This prevents two agents from claiming the same task.
 *
 * After claiming, the agent should:
 * 1. Read the task note and all linked context_notes
 * 2. Call update_task to set status to "in_progress"
 * 3. Do the work
 * 4. Call complete_task when done
 */
import { z } from "zod";
import { Vault } from "../vault.js";
import { Config } from "../config.js";
export declare const claimTaskSchema: {
    task_id: z.ZodString;
    assignee: z.ZodString;
    worktree_branch: z.ZodOptional<z.ZodString>;
    worktree_path: z.ZodOptional<z.ZodString>;
};
export declare const claimTaskHandler: (vault: Vault, config: Config) => (input: {
    task_id: string;
    assignee: string;
    worktree_branch?: string;
    worktree_path?: string;
}) => Promise<{
    content: {
        type: "text";
        text: string;
    }[];
    isError?: boolean;
}>;
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