Attribute optional server and browser Sentry events to their source build.
Use validated build commits for Docker and source/npm artifacts, preserve
explicit server release overrides, and keep cached browser bundles tied
to the commit they loaded.
Verify 127 focused tests, server/UI typechecks, Docker and source build
stamps, all 53 CI checks, and Greptile 5/5 with no unresolved comments.
Co-Authored-By: Paperclip <noreply@paperclip.ing>