ci(release): add multi-platform release pipeline workflow

Co-authored-by: Junie <junie@jetbrains.com>

.github/workflows/release.yml

@@ -0,0 +1,142 @@
+name: Release Pipeline
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+permissions:
+  contents: write
+
+jobs:
+  bump-version:
+    name: Bump Version & Create Tag
+    runs-on: ubuntu-latest
+    outputs:
+      version: ${{ steps.bump.outputs.version }}
+      tag: ${{ steps.bump.outputs.tag }}
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Compute Next Version and Tag
+        id: bump
+        run: |
+          git fetch --tags
+          LATEST_TAG=$(git tag -l "v*" | sort -V | tail -n 1)
+
+          if [ -z "$LATEST_TAG" ]; then
+            NEXT_VERSION="1.0.0"
+          else
+            CLEAN_VERSION="${LATEST_TAG#v}"
+            IFS='.' read -r MAJOR MINOR PATCH <<< "$CLEAN_VERSION"
+            PATCH=$((PATCH + 1))
+            NEXT_VERSION="${MAJOR}.${MINOR}.${PATCH}"
+          fi
+
+          NEXT_TAG="v${NEXT_VERSION}"
+          echo "Latest tag found: ${LATEST_TAG:-none}"
+          echo "Calculated next release version: ${NEXT_VERSION}"
+          echo "Calculated next release tag: ${NEXT_TAG}"
+
+          git config user.name "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+          git tag "${NEXT_TAG}"
+          git push origin "${NEXT_TAG}"
+
+          echo "version=${NEXT_VERSION}" >> "$GITHUB_OUTPUT"
+          echo "tag=${NEXT_TAG}" >> "$GITHUB_OUTPUT"
+
+  package:
+    name: Package ${{ matrix.os-name }}
+    needs: bump-version
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - os: macos-latest
+            os-name: macOS (DMG)
+            artifact-name: macos-dmg
+            artifact-path: composeApp/build/compose/binaries/main/dmg/*.dmg
+            gradle-task: ":composeApp:packageDmg"
+          - os: windows-latest
+            os-name: Windows (MSI)
+            artifact-name: windows-msi
+            artifact-path: composeApp/build/compose/binaries/main/msi/*.msi
+            gradle-task: ":composeApp:packageMsi"
+          - os: ubuntu-latest
+            os-name: Linux (DEB)
+            artifact-name: linux-deb
+            artifact-path: composeApp/build/compose/binaries/main/deb/*.deb
+            gradle-task: ":composeApp:packageDeb"
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up JDK 17
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'temurin'
+          java-version: '17'
+
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v4
+
+      - name: Build Package (${{ matrix.os-name }})
+        shell: bash
+        run: |
+          ./gradlew ${{ matrix.gradle-task }} -PappVersion=${{ needs.bump-version.outputs.version }}
+
+      - name: Upload Artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ matrix.artifact-name }}
+          path: ${{ matrix.artifact-path }}
+          if-no-files-found: error
+
+  create-release:
+    name: Create GitHub Release
+    needs:
+      - bump-version
+      - package
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Download all packaged artifacts
+        uses: actions/download-artifact@v4
+        with:
+          path: release-assets
+
+      - name: Publish GitHub Release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          RELEASE_TAG: ${{ needs.bump-version.outputs.tag }}
+          RELEASE_VERSION: ${{ needs.bump-version.outputs.version }}
+        run: |
+          mkdir -p dist
+          find release-assets -type f \( -name "*.dmg" -o -name "*.msi" -o -name "*.deb" \) -exec cp {} dist/ \;
+
+          echo "Files prepared for release:"
+          ls -lh dist/
+
+          RELEASE_BODY="### WoW Backup ${RELEASE_TAG}
+
+          Automated release build for **WoW Backup v${RELEASE_VERSION}**.
+
+          #### Available Packages
+          - **macOS**: \`.dmg\` installer (Apple Silicon & Intel)
+          - **Windows**: \`.msi\` Windows Installer
+          - **Linux**: \`.deb\` package (Debian / Ubuntu)
+
+          ---
+          For detailed setup and installation notes, please refer to [INSTALL.md](https://github.com/${{ github.repository }}/blob/${RELEASE_TAG}/INSTALL.md)."
+
+          gh release create "${RELEASE_TAG}" dist/* \
+            --title "WoW Backup ${RELEASE_TAG}" \
+            --notes "${RELEASE_BODY}"