fix: generate mandatory analytics.pb in fabricated scanner report

go/internal/scanreport/packager.go

@@ -40,6 +40,9 @@ func PackageReport(data *ReportData) ([]byte, error) {
 	if err := addMetadata(zw, data.Metadata); err != nil {
 		return nil, err
 	}
+	if err := addAnalytics(zw); err != nil {
+		return nil, err
+	}
 	if err := addComponents(zw, data.RootComponent, data.FileComponents); err != nil {
 		return nil, err
 	}
@@ -81,6 +84,15 @@ func addMetadata(zw *zip.Writer, md *pb.Metadata) error {
 	return addProtoMessage(zw, "metadata.pb", md)
 }
 
+// addAnalytics writes analytics.pb, which the Compute Engine treats as
+// mandatory (issue #478). We identify ourselves via ci_name so migrated
+// analyses are distinguishable from real scanner runs.
+func addAnalytics(zw *zip.Writer) error {
+	return addProtoMessage(zw, "analytics.pb", &pb.Analytics{
+		Property: map[string]string{"ci_name": "sonar-migration-tool"},
+	})
+}
+
 func addComponents(zw *zip.Writer, root *pb.Component, files []*pb.Component) error {
 	if err := addProtoMessage(zw, fmt.Sprintf("component-%d.pb", root.Ref), root); err != nil {
 		return err

go/internal/scanreport/packager_test.go

@@ -72,6 +72,7 @@ func verifyZipStructure(t *testing.T, zipBytes []byte) {
 
 	expected := map[string]bool{
 		"metadata.pb":      false,
+		"analytics.pb":     false,
 		"component-1.pb":   false,
 		"component-2.pb":   false,
 		"activerules.pb":   false,