publish codemirrot helix package flow

.gitea/workflows/publish-codemirror-helix.yml

@@ -0,0 +1,48 @@
+name: Publish codemirror-helix
+
+# Releases the packages/codemirror-helix workspace package to npm.
+# Trigger by pushing a tag like `codemirror-helix-v0.1.0` whose version
+# matches packages/codemirror-helix/package.json.
+on:
+  push:
+    tags:
+      - "codemirror-helix-v*"
+
+jobs:
+  publish:
+    runs-on: x86
+
+    defaults:
+      run:
+        working-directory: packages/codemirror-helix
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: latest
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 24
+          registry-url: "https://registry.npmjs.org"
+
+      # Workspace install must happen at the monorepo root.
+      - name: Install dependencies
+        working-directory: .
+        run: bun install --frozen-lockfile
+
+      - name: Check tag matches package version
+        run: |
+          PACKAGE_VERSION="$(node -p "require('./package.json').version")"
+          TAG_NAME="${GITHUB_REF_NAME:-${GITHUB_REF#refs/tags/}}"
+          test "codemirror-helix-v${PACKAGE_VERSION}" = "${TAG_NAME}"
+
+      - name: Build
+        run: bun run build
+
+      - name: Publish
+        run: npm publish --access public
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}