Package check result: NOTE

Check: CRAN incoming feasibility, Result: NOTE
  Maintainer: ‘Hadley Wickham <hadley@posit.co>’
  
  Found the following (possibly) invalid URLs:
    URL: https://platform.deepseek.com
      From: man/chat_deepseek.Rd
      Status: 403
      Message: Forbidden
    URL: https://www.perplexity.ai
      From: man/chat_perplexity.Rd
      Status: 403
      Message: Forbidden

No changes to worse in reverse depends.