Function updateSection

src/core/task-parser.ts:246–250

(content: string, sectionName: string, newContent: string)

 * Update a specific section while preserving others
 */
export function updateSection(content: string, sectionName: string, newContent: string): string {
  const task = parseTaskDocument(content);
  task.sections[sectionName.toLowerCase()] = newContent;
  return serializeTaskDocument(task);
}

/**
 * Extract a specific section from task content