How to display a zero-level chapter (with figure) in the PDF outline?

Questions
,
2

Hi @bowentan, there was just recently a showcase post about it here Part independent section. I personally use:

#let chapter(body) = heading(level: 1, body)

#set heading(
  offset: 1,
  numbering: (chap, ..nums) => {
  if nums.pos().len() == 0 {
    numbering("I", chap)
  } else {
    numbering("1.1", ..nums)
  }
})

#outline()


#chapter[Chapter One]
= Section One
== Subsection
#chapter[Chapter Two]
= Section One
== Subsection
= Section Two

Typst does currently not include the numbering in the PDF bookmarks, see #2416.