Function fetchSkillFile

server/utils/skills.ts:107–140

(
  packageName: string,
  version: string,
  filePath: string,
)

 * Fetch file content from jsDelivr CDN with size limit.
 */
export async function fetchSkillFile(
  packageName: string,
  version: string,
  filePath: string,
): Promise<string> {
  const url = `https://cdn.jsdelivr.net/npm/${packageName}@${version}/${filePath}`
  const response = await fetch(url)

  if (!response.ok) {
    if (response.status === 404) {
      throw createError({ statusCode: 404, message: 'File not found' })
    }
    throw createError({ statusCode: 502, message: 'Failed to fetch file from jsDelivr' })
  }

  const contentLength = response.headers.get('content-length')
  if (contentLength && parseInt(contentLength, 10) > MAX_SKILL_FILE_SIZE) {
    throw createError({
      statusCode: 413,
      message: `File too large (${(parseInt(contentLength, 10) / 1024 / 1024).toFixed(1)}MB). Maximum size is ${MAX_SKILL_FILE_SIZE / 1024}KB.`,
    })
  }

  const content = await response.text()

  if (content.length > MAX_SKILL_FILE_SIZE) {
    throw createError({
      statusCode: 413,
      message: `File too large (${(content.length / 1024 / 1024).toFixed(1)}MB). Maximum size is ${MAX_SKILL_FILE_SIZE / 1024}KB.`,
    })
  }

  return content
}

/**
 * Fetch and parse SKILL.md content for a skill.