API: Send Episode to Notion

type RequestBody = {
  // Include transcript content. Default: true
  transcripts?: boolean,
  // Include mindmap (limited to 3 nesting levels due to Notion API). Default: false
  mindmap?: boolean,
  // Group transcript by outline sections. Default: false
  mixOutlines?: boolean,
  // Translation language code (e.g., "zh", "ja"). null for original language
  translation?: string | null,
  // Show both original and translated text when translation is set. Default: false
  mixWithOriginLanguage?: boolean,
}

type Response = {
  success: true,
  result: {
    // URL of the created Notion page
    url: string,
    // Present when the page was created but some content failed to write
    warning?: string,
  },
}