import type { AssetProvenance, KnowledgeRequirement, KnowledgeSource, LessonExtension, ReplacementRecord } from "./contracts.ts";
export type KnowledgePack = {
    kernel: string;
    release: string;
    sources: KnowledgeSource[];
    requirements: KnowledgeRequirement[];
    extensions: LessonExtension[];
    replacements: ReplacementRecord[];
    assets: AssetProvenance[];
    errors: string[];
};
export declare function knowledgeV2Dir(kernel: string): string;
export declare function verifyKnowledgeV2(kernel: string): string[];
export declare function loadKnowledgeV2(siteOrKernel: string): KnowledgePack | undefined;
export declare function lessonExtension(pack: KnowledgePack | undefined, id: string): LessonExtension | undefined;
export declare function sourceFreshness(source: KnowledgeSource, now: Date, intervalDays: number): "current" | "due-for-maintenance" | "not-reviewed";
export declare function coverageReport(pack: KnowledgePack): {
    release: string;
    requirements: {
        id: string;
        authorityClass: string;
        implementationStatus: string;
        verifierId: string | null;
    }[];
    missingClassification: string[];
};
/** v1 lesson ids stay valid. v2 records the version they map to. */
export declare function migrateLessonId(pack: KnowledgePack, id: string, version: number): {
    id: string;
    version: number;
    migrated: boolean;
};