Function readArchivedPlan

packages/shared/storage.ts:184–194

(filename: string, customPath?: string | null)

 * Returns null if the file doesn't exist or on read error.
 */
export function readArchivedPlan(filename: string, customPath?: string | null): string | null {
  const planDir = getPlanDir(customPath);
  const filePath = resolve(planDir, filename);
  // Guard against path traversal (resolve + trailing separator, matching reference-handlers.ts)
  if (!filePath.startsWith(planDir + sep)) return null;
  try {
    return readFileSync(filePath, "utf-8");
  } catch {
    return null;
  }
}

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