run test on PRs

.github/workflows/test.yml

@@ -0,0 +1,36 @@
+name: Test
+
+on:
+  pull_request:
+
+jobs:
+  run-tests:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Use Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "24.x"
+
+      - name: Cache Yarn dependencies
+        uses: actions/cache@v4
+        with:
+          path: ~/.cache/yarn
+          key: ${{ runner.os }}-yarn-${{ hashFiles('**/yarn.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-yarn-
+        timeout-minutes: 0.5
+        continue-on-error: true
+
+      - name: Verify Yarn cache
+        if: steps.yarn-cache.outputs.cache-hit != 'true'
+        run: mkdir -p ~/.cache/yarn
+
+      - name: Install dependencies
+        run: yarn install --frozen-lockfile
+
+      - name: Run tests
+        run: yarn test