Simplify CI

.github/workflows/test.yml

@@ -35,43 +35,7 @@ jobs:
         if: steps.check-assets.outputs.missing == 'true'
         run: sleep 90
 
-  check-proto:
-    runs-on: ubuntu-latest
-    if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
-    steps:
-      - name: Checkout codebase
-        uses: actions/checkout@v7
-      - name: Set up Go
-        uses: actions/setup-go@v7
-        with:
-          go-version-file: go.mod
-      - name: Cache protoc
-        id: cache-protoc
-        uses: actions/cache@v6
-        with:
-          path: ${{ runner.temp }}/protoc
-          key: protoc-linux-x86_64-33.5
-      - name: Download protoc
-        if: steps.cache-protoc.outputs.cache-hit != 'true'
-        working-directory: ${{ runner.temp }}
-        run: |
-          curl -fsSL --retry 3 -o protoc.zip https://github.com/protocolbuffers/protobuf/releases/download/v33.5/protoc-33.5-linux-x86_64.zip
-          unzip -q protoc.zip -d protoc
-      - name: Install pinned protobuf tools
-        run: |
-          go install google.golang.org/protobuf/cmd/protoc-gen-go@v1.36.11
-          go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@v1.6.0
-      - name: Check generated protobuf files
-        run: |
-          export PATH="$RUNNER_TEMP/protoc/bin:$PATH"
-          # Remove old outputs so orphaned pb files are also detected.
-          git ls-files -z -- '*.pb.go' | xargs -0 -r rm --
-          go run ./infra/vprotogen
-          # Include newly generated files in the diff without committing.
-          git add --intent-to-add --force -- '*.pb.go'
-          git diff --exit-code HEAD -- '*.pb.go'
-
-  check-format:
+  check-format-and-proto:
     runs-on: ubuntu-latest
     if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name != github.event.pull_request.base.repo.full_name
     permissions:
@@ -87,6 +51,8 @@ jobs:
           cache: false
       - name: Check Format
         run: go run ./infra/vformat/main.go -mode check -pwd ./
+      - name: Check Protobuf
+        run: go run ./infra/vprotogen/main.go -mode check -pwd ./
 
   test:
     needs: check-assets