Method flush

src/cli/transports/ccrClient.ts:831–834

* Flush pending client events (writeEvent queue). Call before close() * when the caller needs delivery confirmation — close() abandons the * queue. Resolves once the uploader drains or rejects; returns * regardless of whether individual POSTs succeeded (check server state * separately if

()

   * separately if that matters).
   */
  async flush(): Promise<void> {
    await this.flushStreamEventBuffer()
    return this.eventUploader.flush()
  }

  /**
   * Read foreground agent internal events from