ci: publish mcp package to npm

.gitea/workflows/build.yml

@@ -0,0 +1,37 @@
+name: build
+on:
+  push:
+    branches: [main]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout from in-cluster gitea
+        run: |
+          set -e
+          git clone --depth=1 \
+            "http://gitea_admin:${{ secrets.ADMIN_PW }}@gitea-http.gitea.svc.cluster.local:3000/gitea_admin/a2a-mcp.git" .
+          git checkout "$GITHUB_SHA"
+
+      - name: setup node
+        run: |
+          set -e
+          apt-get update
+          apt-get install -y --no-install-recommends ca-certificates curl
+          curl -fsSL https://deb.nodesource.com/setup_20.x | bash -
+          apt-get install -y --no-install-recommends nodejs
+          node --version
+          npm --version
+
+      - name: install dependencies
+        run: npm ci
+
+      - name: test
+        run: npm test
+
+      - name: build
+        run: npm run build
+
+      - name: verify package contents
+        run: npm pack --dry-run