/**
 * `agent-bober list-approvals [--json]` — list all pending checkpoints awaiting approval.
 *
 * Stateless: reads .bober/approvals/*.pending.json from the project root.
 * Works from any cwd inside the project (findProjectRoot() walks upward).
 * Output: human-readable table by default, machine-readable JSON via --json flag.
 *
 * Sprint 9 — colocated CLI command per Sprint 8/10 precedent.
 */
import type { Command } from "commander";
/**
 * Format a duration in milliseconds as a human-readable string (e.g. "2h 15m").
 */
export declare function formatAge(ageMs: number): string;
export declare function registerListApprovalsCommand(program: Command): void;
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