import { Rule, RunContext, HealthReport, RuleMeta, Severity } from './types';
/**
 * Central rule registry & execution engine.
 */
export declare class RuleEngine {
    private rules;
    /** Register a rule */
    register(rule: Rule): void;
    /** Register multiple rules */
    registerAll(rules: Rule[]): void;
    /** List metadata for all registered rules */
    listRules(): RuleMeta[];
    /** Get metadata for a specific rule by id */
    explainRule(id: string): RuleMeta | undefined;
    /** Execute all enabled rules and produce a health report */
    run(ctx: RunContext): Promise<HealthReport>;
}
/** Determine if the scan should fail based on failOn threshold */
export declare function shouldFail(report: HealthReport, failOn?: Severity): boolean;
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