ci(v1): add cross-platform compilation check

.github/workflows/compilation.yaml

@@ -0,0 +1,50 @@
+# Copyright 2026 Google LLC
+#
+# 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.
+
+name: compilation
+on:
+  push:
+    branches:
+      - "v1"
+  pull_request:
+    branches:
+      - "v1"
+
+permissions:
+  contents: read
+
+jobs:
+  compilation:
+    name: Cross-platform compilation check
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4.3.1
+
+      - name: Setup Go
+        uses: actions/setup-go@40f1582b2485089dde7abd97c1529aa768e1baff # v5.6.0
+        with:
+          go-version: "1.26"
+
+      - name: Verify Builds
+        run: |
+          CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build ./...
+          CGO_ENABLED=0 GOOS=linux GOARCH=386 go build ./...
+          CGO_ENABLED=0 GOOS=linux GOARCH=arm64 go build ./...
+          CGO_ENABLED=0 GOOS=darwin GOARCH=amd64 go build ./...
+          CGO_ENABLED=0 GOOS=darwin GOARCH=arm64 go build ./...
+          CGO_ENABLED=0 GOOS=windows GOARCH=amd64 go build ./...
+          CGO_ENABLED=0 GOOS=windows GOARCH=386 go build ./...
+          CGO_ENABLED=0 GOOS=freebsd GOARCH=amd64 go build ./...
+          CGO_ENABLED=0 GOOS=openbsd GOARCH=amd64 go build ./...