Add frontend lint and test workflows

.github/workflows/frontend-lint.yml

@@ -0,0 +1,28 @@
+name: Lint Frontend
+
+on:
+  push:
+    branches: [ main ]
+    paths:
+      - 'frontend/**'
+  pull_request:
+    branches: [ main ]
+    paths:
+      - 'frontend/**'
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+          cache-dependency-path: frontend/package-lock.json
+      - name: Install dependencies
+        working-directory: frontend
+        run: npm ci
+      - name: Run lint
+        working-directory: frontend
+        run: npm run lint

.github/workflows/frontend-tests.yml

@@ -0,0 +1,28 @@
+name: Frontend Tests
+
+on:
+  push:
+    branches: [ main ]
+    paths:
+      - 'frontend/**'
+  pull_request:
+    branches: [ main ]
+    paths:
+      - 'frontend/**'
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+          cache-dependency-path: frontend/package-lock.json
+      - name: Install dependencies
+        working-directory: frontend
+        run: npm ci
+      - name: Run tests
+        working-directory: frontend
+        run: npm run test