tracing reported broken in #3960
Separately, and not caused by anything in this PR: telemetry tracing looks broken on main any time ENABLE_TELEMETRY_TRACES=true. The backend has sdk-node 0.217.0 pulling v2-era otlp-transformer alongside the v1-era exporter-trace-otlp-grpc / exporter-metrics-otlp-grpc, and trace export throws on clashing protobufjs globals. Bumping the two grpc exporters to ^0.221.0 fixes that crash but trades it for another, since v1's Span has no instrumentationScope field and the v2-era serializer requires it. Nothing catches this today because service.test.ts mocks the otel packages wholesale and CI never enables telemetry. Worth a look by whoever owns telemetry.
tracing reported broken in #3960