/**
 * Research note serializer — PURE citation-frontmatter markdown note for MedlinePlus findings.
 *
 * PURE / NO network / NO LLM / NO Date.now()
 * All timestamps are injected parameters; the wall clock is read ONLY at the CLI boundary.
 *
 * Produces a vault research note with flattened citation frontmatter (title/url/source
 * as parallel arrays) so serializeFrontmatter (scalar/array-of-scalar only) renders correctly.
 * See: Pattern E / briefing §2 (the nested-object pitfall with Citation[]).
 */
import type { MedicalAnswer } from "../types.js";
/**
 * Derive the canonical path for a research note under the vault.
 * Output: <vaultDir>/research/<YYYY-MM-DD>-<marker>.md
 * Date is sliced from the injected ISO string — never wall-clock.
 */
export declare function researchNotePath(vaultDir: string, marker: string, now: string): string;
/**
 * Serialize a grounded MedicalAnswer into a vault research note string.
 *
 * Frontmatter:
 *   title, domain, type, marker, source (scalar "medlineplus"),
 *   citationTitles[] (strings), citationUrls[] (strings), surfacedAt, status.
 *
 * PITFALL: Citation is an object {title, url, source}. Passing citations straight into
 * serializeFrontmatter would render "  - [object Object]". This function FLATTENS them
 * into parallel arrays-of-strings (citationTitles, citationUrls) + a scalar `source`.
 *
 * Body: answer.body + disclaimerFooter.
 */
export declare function serializeResearchNote(marker: string, answer: MedicalAnswer, now: string): string;
//# sourceMappingURL=research-note.d.ts.map