Their tools, not ours
What we did
The team works inside the agency's Jira, GitHub organisation and Figma, using the agency's branch and commit conventions.
Why
Anything that leaves our fingerprints in an artefact the client might see is a leak. It also means the agency owns the history if the partnership ends.
What it cost
Onboarding is slower and our internal tooling does not apply. We absorb that cost rather than asking the partner to work our way.