Workflow:

• copy the yaml content into a new device set-me-up in your esphome
• build firmware, download
• rename set-me-up in esphome to template-do-notuse
• upload firmware to device
• connect to device AP, set wifi parameters
• device should show up as set-me-up in esphome, ready to be adapted (here it gets its correct name, etc)
• after that the config looks like this:

  substitutions:
    name: "nous-5"
    friendly_name: Küche Steckdose Friteuse
  packages:
    finkregh.Nous AT1: github://finkregh/esphome-configs/nous-at1.yaml@main
  esphome:
    name: ${name}
    name_add_mac_suffix: false
    friendly_name: ${friendly_name}
  

• you can now add your own config parts (e.g. API key) and finally rename it via the UI
• if you want to change variables, do so via the substitutions: parts at the top, reference the file here to see available variables