Ch service design: Provide criteria for success for every activity

[nicolk]

Feedback from sessions in March 2026

Chapter: service design
Feedback: Provide more examples/templates for the reader. For example, we should have for all of those:
https://playbook.govstack.global/development/implementation/design-service/1-understanding-the-current-service-as-is#criteria-for-success-in-the-as-is-phase