test: assert pipelinerunSpanContext propagates in new-model snapshot prep

Cover the carrier-annotation copy added in the preceding commit. The
spec seeds the annotation on the build PipelineRun fixture, calls
PrepareSnapshotForPipelineRun, asserts the same value lands on the
resulting Snapshot, and cleans up to keep the shared fixture
unchanged for subsequent specs.

Assisted-by: Claude Code
Signed-off-by: Josiah England <jengland@redhat.com>

Author: ci-operator

snapshot/create_test.go

@@ -454,6 +454,17 @@ var _ = Describe("Snapshot creation functions", Ordered, func() {
 			Expect(label).To(Equal("pull_request"))
 		})
 
+		It("propagates pipelinerunSpanContext annotation from the build PipelineRun to the Snapshot", func() {
+			const carrier = `{"traceparent":"00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01"}`
+			buildPipelineRun.Annotations[tektonconsts.SpanContextAnnotation] = carrier
+			defer delete(buildPipelineRun.Annotations, tektonconsts.SpanContextAnnotation)
+
+			snapshot, err := PrepareSnapshotForPipelineRun(ctx, k8sClient, buildPipelineRun, componentName, hasCompGroup)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(snapshot).ToNot(BeNil())
+			Expect(snapshot.GetAnnotations()[tektonconsts.SpanContextAnnotation]).To(Equal(carrier))
+		})
+
 		It("ensures non-pipelines as code labels and annotations are NOT propagated to the snapshot", func() {
 			snapshot, err := PrepareSnapshotForPipelineRun(ctx, k8sClient, buildPipelineRun, componentName, hasCompGroup)
 			Expect(err).ToNot(HaveOccurred())