chore: auto-publish protocol and cli packages on push to main

Author: yanekyuk

.github/workflows/publish.yml

@@ -0,0 +1,42 @@
+# Publish @indexnetwork/cli to npm on every push to main.
+# Reads version from package.json — npm silently skips if already published.
+#
+# Requires: GitHub repo secret INDEX_REPO_TOKEN (npm automation token).
+name: Publish
+
+on:
+  push:
+    branches:
+      - main
+
+concurrency:
+  group: publish-${{ github.ref }}
+  cancel-in-progress: false
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    name: Build and publish to npm
+
+    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
+
+      - name: Install dependencies
+        run: bun install --frozen-lockfile
+
+      - name: Build
+        run: bun run build
+
+      - name: Publish (skip if version already exists)
+        run: npm publish --access public || true
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.INDEX_REPO_TOKEN }}