/**
 * Replace a pattern only in the current milestone section of ROADMAP.md.
 *
 * Port of replaceInCurrentMilestone from core.cjs lines 1013-1022.
 *
 * Semantics:
 *   • No `</details>` in the content  → plain `content.replace(pattern, replacement)`.
 *   • Otherwise → split at the last `</details>` and replace only in the
 *     content AFTER it.
 *   • If the after-slice produces no replacement (pattern not found there),
 *     fall back to replacing inside the last `<details>...</details>` block.
 *     This handles the case where the active milestone is itself wrapped in
 *     a `<details>` block (e.g. collapsed by the user or during a milestone
 *     transition). Earlier shipped-milestone blocks are left untouched because
 *     only the last `<details>` block is targeted by the fallback.
 *     (Fixes #2641.)
 */
export declare function replaceInCurrentMilestone(content: string, pattern: string | RegExp, replacement: string): string;
/**
 * Atomic read-modify-write for ROADMAP.md.
 *
 * Holds a lockfile across the entire read -> transform -> write cycle.
 */
export declare function readModifyWriteRoadmapMd(projectDir: string, modifier: (content: string) => string | Promise<string>, workstream?: string): Promise<string>;
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