Test Template

Create a test interview and session in one shot, returning a join URL for immediate testing.

Phase A versioning behavior — caller decides whether to test the specific version (passed id) or whichever is currently active in the lineage:

• Detail page (admin viewing a specific version): passes pin_specific_version: true so we test THE selected version even when it's inactive. Lets "create v2 → test v2 → promote" work without first making v2 production-live.
• List view (admin clicked Test on the row): default behavior — pin_specific_version is missing/false, we resolve to the active version of the lineage so the test mirrors what real users get.