Add release workflow

Author: xychen

.github/workflows/build.yml

@@ -1,6 +1,8 @@
 on:
   push:
   pull_request:
+  release:
+    types: [published]
 
 permissions:
   contents: write
@@ -148,3 +150,34 @@ jobs:
       - name: Deploy to GitHub Pages
         uses: actions/deploy-pages@v4
         id: deploy
+
+  publish-github:
+    if: github.event_name == 'release'
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: Download artifact
+        uses: actions/download-artifact@v4
+        with:
+          pattern: commands-mcp_*
+
+      - name: Pack
+        run: |
+          mkdir -p assets
+          for dir in commands-mcp_*; do
+            pushd ${dir}
+            if [[ "${dir}" == *"win32"* ]]; then
+              zip -9 ../assets/${dir}.zip commands-mcp.exe
+            else
+              chmod +x commands-mcp
+              tar -caf ../assets/${dir}.tar.xz commands-mcp
+            fi
+            popd
+          done
+
+      - name: Upload release assets
+        uses: svenstaro/[email protected]
+        with:
+          file: assets/*
+          file_glob: true
+          make_latest: false