screenshot_workbook

Screenshot a published workbook's view for human review.

Use after upload_workbook to capture a visual snapshot. The screenshot is saved locally for human inspection.

Args: workbook_id: The workbook ID returned by upload_workbook. output_dir: Directory to save screenshot (default: output/validation). view_index: Index of the view to screenshot (default: 0). view_name: Name of the view to screenshot (overrides view_index). env_path: Optional path to a .env file with Tableau credentials. Explicit env_path takes priority over process environment variables.

Returns: {success, path, view_name, view_id, size_kb, error}