chore(deps): pre-vendor OpenTelemetry dependencies

tools.go

@@ -0,0 +1,32 @@
+/*
+Copyright 2026 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+	http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+//go:build tools
+
+// Package tools pre-vendors the OpenTelemetry dependencies of the
+// OpenCensus to OpenTelemetry migration (#1297). It is never compiled
+// (the "tools" build tag is never set) and should be deleted once the
+// migration lands and imports these packages for real.
+package tools
+
+import (
+	_ "github.com/GoogleCloudPlatform/opentelemetry-operations-go/exporter/metric"
+	_ "github.com/prometheus/otlptranslator"
+	_ "go.opentelemetry.io/otel/exporters/prometheus"
+	_ "go.opentelemetry.io/otel/sdk/metric"
+	_ "go.opentelemetry.io/otel/sdk/metric/metricdata/metricdatatest"
+	_ "go.opentelemetry.io/otel/semconv/v1.34.0"
+)