/** The only top-level frontmatter keys a catalog SKILL.md may carry. */
export declare const ALLOWED_FRONTMATTER_KEYS: readonly ['name', 'description', 'tags', 'tools', 'license'];
/**
 * Problems that keep `text` from being a canonical catalog SKILL.md: no
 * frontmatter, a key outside the allow-list, any line that is not a
 * single-line `key: value` (indented, flow-mapping, anchor, alias, tag or
 * block-scalar forms, or a value holding a U+2028/U+2029), or a `---`
 * anywhere in a line — Claude Code ends the frontmatter at the first `---`,
 * even mid-value, and would read the rest as body. Staging refuses what
 * `sanitizeFrontmatter` produces unless this is empty.
 */
export declare function frontmatterViolations(text: string): string[];
/**
 * Rewrites the frontmatter of `text` to the allow-listed keys, one line each
 * (strings JSON-quoted, lists as JSON arrays of plain tokens), keeping the
 * body byte-for-byte. `removed` names the dropped keys. Text without
 * frontmatter is returned unchanged (inspection then refuses it).
 */
export declare function sanitizeFrontmatter(text: string): {
    text: string;
    removed: string[];
};
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