import type { SecuritySignature, SecurityStackId } from "./signature.js";
/**
 * Loads and memoises every `skills/bober.security-<stack>/SKILL.md` file's
 * parsed signatures, once per process (ADR-7: no runtime cache invalidation).
 *
 * Iterates the registry's 8 known stack entries rather than `readdir`-ing
 * the skills directory — that would sweep in `skills/bober.security-audit/`
 * (the orchestration workflow skill, not a stack) and the parser needs a
 * known `stackId` per file anyway.
 */
export declare class SecurityKnowledgeIndex {
    private readonly skillsRoot;
    private cache;
    constructor(skillsRoot?: string);
    /** Parses all 8 skill files once and memoises. Idempotent — a second call is a no-op. */
    load(): Promise<void>;
    /** That stack's signatures, or [] when missing/before load(). Never throws. */
    forStack(stackId: SecurityStackId): SecuritySignature[];
    /** The union of every stack's signatures. */
    all(): SecuritySignature[];
}
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