/**
 * Skill Currency Checker — bridges vskill registry into specweave doctor.
 *
 * In projects that use vskill (i.e. have a `vskill.lock` file), shells out
 * to `vskill outdated --json` and summarises the count of skills with
 * available updates. Gracefully no-ops when vskill is not installed or
 * when the project has no lockfile.
 *
 * Increment 0794 — US-005 / T-017.
 * ADR: 0794-04-doctor-as-update-visibility-surface.md
 */
import type { HealthChecker, CategoryResult, DoctorOptions } from '../types.js';
interface SkillCurrencyOptions {
    vskillBin?: string;
    cwd?: string;
}
export declare class SkillCurrencyChecker implements HealthChecker {
    category: string;
    private vskillBin;
    private cwd;
    constructor(opts?: SkillCurrencyOptions);
    check(projectRoot: string, _options: DoctorOptions): Promise<CategoryResult>;
}
export {};
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