/**
 * Decisions Markdown I/O — parse and serialize decisions.md files.
 *
 * Wraps the existing `parseDecisionsMarkdown()` from markdown-migration.ts
 * and adds serialization for round-trip support.
 *
 * @module state/io/decisions-io
 */
import { type ParsedDecision } from '../../config/markdown-migration.js';
export type { ParsedDecision };
/**
 * Parse decisions markdown into typed decision entries.
 * Delegates to the existing `parseDecisionsMarkdown()`.
 */
export declare function parseDecisions(markdown: string): ParsedDecision[];
/**
 * Serialize a single decision entry to markdown.
 *
 * Format:
 * ```
 * ### YYYY-MM-DD: Title
 * **By:** author
 * body content
 * ```
 */
export declare function serializeDecision(decision: ParsedDecision): string;
/**
 * Serialize an array of decisions to a full decisions.md file.
 *
 * Produces:
 * ```
 * # Decisions
 *
 * ### 2026-01-15: First Decision
 * ...
 *
 * ### 2026-02-01: Second Decision
 * ...
 * ```
 */
export declare function serializeDecisions(decisions: ParsedDecision[]): string;
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