Add .github/workflows/test.yml via sh1pt node-pnpm-test@1.2.0

Author: sh1pt-actions-fleet[bot]

.github/workflows/test.yml

@@ -0,0 +1,39 @@
+# Managed by sh1pt Actions Fleet
+# pack: node-pnpm-test@1.2.0
+# install: sh1pt-actions-store
+# hash: sha256:53499e840c5023f2235444afd4f6a36d2c0bf8a40c52cfdf84615b17624de69b
+name: test
+
+on:
+  pull_request:
+  push:
+    branches: [master]
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - uses: actions/checkout@v4
+
+      # pnpm version is read from the "packageManager" field in package.json.
+      # Do not pin a version here — it conflicts with packageManager and fails
+      # with ERR_PNPM_BAD_PM_VERSION.
+      - uses: pnpm/action-setup@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: pnpm
+
+      - run: pnpm install --frozen-lockfile
+
+      # test defaults to `pnpm run --if-present test` so a repo that hasn't
+      # defined a test script yet gets a green workflow instead of failing on
+      # the first step. Once the script exists it runs normally.
+      - run: pnpm run --if-present test
+        env:
+          CI: true