Function formatPortInUseError

apps/cli/src/http/port.ts:29–39

(port: number)

 * 返回端口被占用时统一的友好报错文案。
 */
export function formatPortInUseError(port: number): string {
  return [
    ``,
    `  ✖ Error: port ${port} is already in use.`,
    ``,
    `    Another process (possibly a ChatLab instance) is using this port. You can:`,
    `    • Use another port:   chatlab start --port <port>`,
    `    • Find the process:   lsof -iTCP:${port} -sTCP:LISTEN`,
    ``,
  ].join('\n')
}