export interface ReleaseInfo {
    tagName: string;
    version: string;
    name: string;
    body: string;
    htmlUrl: string;
    publishedAt: string;
}
/**
 * Build GitHub Release web URL for a given version.
 */
export declare function buildGitHubReleaseUrl(version: string): string;
/**
 * Fetch release notes from GitHub API for a given version.
 * Returns cached result if available and not expired.
 * Returns null if fetch fails or release doesn't exist.
 */
export declare function fetchReleaseNote(version: string): Promise<ReleaseInfo | null>;