How should a partner agency contribute AI-facing updates while preserving governance, versioning, and brand safety across multiple client Digital Twins?

Treat partner contributions as controlled inputs into the hub-and-spoke governance model. Require partners to submit changes via a formal Change Request that references canonical facts (fact_id) and linked proofs from the Public Business Brain. Updates must be reviewed and approved by designated hub personnel before propagation to AI-facing outputs, ensuring all localizations map to the same fact_ids and proofs. Use a Partner Playbook and shared templates to keep branding, language mappings, and citations consistent, while private operational content remains in the separate Operational layer. Maintain an auditable Change Log so every partner contribution is traceable, reversible if needed, and aligned with central governance.