Add admin frontend tests

.github/workflows/admin-frontend.yml

@@ -0,0 +1,39 @@
+name: Admin Frontend
+permissions:
+  contents: read
+
+on:
+  push:
+    paths:
+      - "web/admin/**"
+      - ".github/workflows/admin-frontend.yml"
+  pull_request:
+    paths:
+      - "web/admin/**"
+      - ".github/workflows/admin-frontend.yml"
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: web/admin
+    steps:
+      # actions/checkout v6
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10
+        with:
+          persist-credentials: false
+      # actions/setup-node v6
+      - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e
+        with:
+          node-version: 24
+          cache: npm
+          cache-dependency-path: web/admin/package-lock.json
+      - run: npm ci --no-audit --no-fund
+      - run: npm run lint
+      - run: npm run test:run
+      - run: npm run build