Function execute

packages/arctic/src/cli/cmd/run.ts:120–267

(sdk: ArcticClient, sessionID: string)

    }

    const execute = async (sdk: ArcticClient, sessionID: string) => {
      const printEvent = (color: string, type: string, title: string) => {
        UI.println(
          color + `|`,
          UI.Style.TEXT_NORMAL + UI.Style.TEXT_DIM + ` ${type.padEnd(7, " ")}`,
          "",
          UI.Style.TEXT_NORMAL + title,
        )
      }

      const outputJsonEvent = (type: string, data: any) => {
        if (args.format === "json") {
          process.stdout.write(JSON.stringify({ type, timestamp: Date.now(), sessionID, ...data }) + EOL)
          return true
        }
        return false
      }

      const events = await sdk.event.subscribe()
      let errorMsg: string | undefined
      let isWorking = false
      let workingInterval: number | undefined

      const updateWorkingIndicator = () => {
        if (workingInterval) {
          clearInterval(workingInterval as any)
        }
        if (!isWorking) {
          process.stderr.write("\r" + " ".repeat(50))
          return
        }
        const spinner = ["⠋", "⠙", "⠹", "⠸", "⠼", "⠴", "⠦", "⠧", "⠇", "⠏"]
        let i = 0
        workingInterval = setInterval(() => {
          process.stderr.write(`\r${UI.Style.TEXT_INFO}${spinner[i % 10]} Working...${UI.Style.TEXT_NORMAL}`)
          i++
        }, 100) as any
      }

      const eventProcessor = (async () => {
        for await (const event of events.stream) {
          if (event.type === "session.status") {
            const status = event.properties.status
            const newIsWorking = status.type === "busy" || status.type === "retry"
            if (newIsWorking !== isWorking) {
              isWorking = newIsWorking
              updateWorkingIndicator()
            }
          }

          if (event.type === "message.part.updated") {
            const part = event.properties.part
            if (part.sessionID !== sessionID) continue

            if (part.type === "tool" && part.state.status === "completed") {
              if (outputJsonEvent("tool_use", { part })) continue
              const [tool, color] = TOOL[part.tool] ?? [part.tool, UI.Style.TEXT_INFO_BOLD]
              const title =