The test server health endpoint now reports 0.2.1 so deployments that include start-end frame routing can be verified directly after restart.
Constraint: Deployment verification relies on /health because the service does not expose a build SHA endpoint.
Confidence: high
Scope-risk: narrow
Directive: Keep this value in sync with test deployments until a real build metadata endpoint exists.
Tested: go test ./...
Tested: make build
Tested: GOOS=linux GOARCH=amd64 go build -o dist/popiartserver-linux-amd64 ./cmd/popiartserver