In my setup, I hide the customized top level heading
#import "@preview/hydra:0.6.2": hydra
#set page(header: context hydra(1, skip-starting: false))
#show heading.where(level: 1): it => align(center, block(it.body))
#set heading(numbering: (first, ..nums) => numbering("A.1.", ..nums))
#show heading.where(level: 1): it => [
#pagebreak()
#it
]
= Chapter 1
== Some title
I wonder if we can hide/suppress the dot in the header.
