docs: add Artifact Registry/Organizations interface agreement
Summary
Add interface agreement for the Artifact Registry, defining requirements, responsibilities, and open questions between the Artifact Registry (Package) and Organizations (Tenant Scale) teams.
Changes
- New file:
content/handbook/engineering/architecture/design-documents/artifact_registry/agreements/organizations.md - Updated:
_index.mdto add an "Interface agreements" section linking to the new page
Context
Per the 2026-03-27 CTO review, the directive is to define interface agreements between dependent teams so each team can work independently. This is the Organizations agreement, covering:
- What AR provides
- What AR requires from Organizations
- Organization merges
- Open questions
Related interface agreements (currently Google Docs, planned for handbook migration):
Edited by João Pereira