Add packaging and release automation

.github/workflows/release.yml

@@ -0,0 +1,86 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - "v*"
+
+permissions:
+  contents: write
+
+env:
+  BIN_NAME: vcom
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+          cache: true
+
+      - name: Run tests
+        run: GOFLAGS=-mod=vendor go test ./...
+
+  release:
+    needs: test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+          cache: true
+
+      - name: Install system dependencies
+        run: sudo apt-get update && sudo apt-get install -y dpkg-dev
+
+      - name: Derive release version
+        shell: bash
+        run: echo "VERSION=${GITHUB_REF_NAME#v}" >> "$GITHUB_ENV"
+
+      - name: Vendor Go modules
+        run: go mod vendor
+
+      - name: Build release binary
+        shell: bash
+        run: |
+          set -euo pipefail
+          mkdir -p target/release
+          GOFLAGS=-mod=vendor CGO_ENABLED=0 go build -trimpath -ldflags="-s -w" -o "target/release/${BIN_NAME}" ./cmd/vcom
+
+      - name: Build deb package
+        shell: bash
+        run: ./scripts/build-deb.sh "${VERSION}"
+
+      - name: Bundle tarball
+        shell: bash
+        run: |
+          set -euo pipefail
+          tar -C target/release -czf "${BIN_NAME}-${GITHUB_REF_NAME}-x86_64-unknown-linux-gnu.tar.gz" "${BIN_NAME}"
+
+      - name: Generate checksums
+        shell: bash
+        run: |
+          set -euo pipefail
+          sha256sum \
+            "${BIN_NAME}-${GITHUB_REF_NAME}-x86_64-unknown-linux-gnu.tar.gz" \
+            "target/debian/${BIN_NAME}_${VERSION}_amd64.deb" \
+            > "${BIN_NAME}-${GITHUB_REF_NAME}-checksums.txt"
+
+      - name: Publish release assets
+        uses: softprops/action-gh-release@v2
+        with:
+          generate_release_notes: true
+          files: |
+            vcom-${{ github.ref_name }}-x86_64-unknown-linux-gnu.tar.gz
+            vcom-${{ github.ref_name }}-checksums.txt
+            target/debian/vcom_${{ env.VERSION }}_amd64.deb