Method prependUserMessage

src/cli/structuredIO.ts:204–213

* Queue a user turn to be yielded before the next message from this.input. * Works before iteration starts and mid-stream — read() re-checks * prependedLines between each yielded message.

(content: string)

   * prependedLines between each yielded message.
   */
  prependUserMessage(content: string): void {
    this.prependedLines.push(
      jsonStringify({
        type: 'user',
        session_id: '',
        message: { role: 'user', content },
        parent_tool_use_id: null,
      } satisfies SDKUserMessage) + '\n',
    )
  }

  private async *read() {
    let content = ''