/**
 * Render a dossier for installation as an agent skill.
 *
 * The problem: dossiers are stored with `---dossier` (JSON) frontmatter so the block
 * can carry a checksum and signature. But agent runtimes parse standard `---` YAML.
 * opencode skips such files outright; Claude Code fares slightly better but does not
 * extract `name`/`description`, so an installed dossier surfaces with the literal
 * string "---dossier" as its description and cannot be matched from a natural-language
 * request. Every authored trigger phrase is inert.
 *
 * The fix: re-serialize the same frontmatter as YAML, with `name` and `description`
 * first so the runtime reads them.
 *
 * Why this does not break verification: a v2 signature covers
 * `canonicalizeFrontmatter(parsedFrontmatter) + body` — the parsed object, not the
 * bytes of the frontmatter block. Re-serializing JSON to YAML leaves the parsed object
 * (and therefore the signed payload) identical, so checksum and signature both still
 * verify. Legacy body-only signatures are likewise unaffected, since the body is copied
 * verbatim.
 *
 * A dossier that is already YAML-fronted is returned unchanged.
 */
/**
 * Convert a dossier to `---` YAML frontmatter suitable for agent skill discovery.
 * Returns the input unchanged when it is already YAML-fronted or cannot be parsed.
 */
export declare function toSkillFrontmatter(rawContent: string, source?: string): string;
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