ci(github): rename e2e to integration test

Author: remarkablemark

.github/workflows/e2e.yml

@@ -5,7 +5,7 @@ permissions:
   contents: read
 
 jobs:
-  test:
+  unit:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
@@ -30,3 +30,28 @@ jobs:
 
       - name: Run module tests
         run: npm run test:esm
+
+  integration:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        browser: [chromium, firefox, webkit]
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Use Node.js
+        uses: actions/setup-node@v6
+        with:
+          cache: npm
+          node-version-file: .nvmrc
+
+      - name: Install dependencies
+        run: npm ci --prefer-offline
+
+      - name: Install Playwright browsers
+        run: npx playwright install ${{ matrix.browser == 'webkit' && '--with-deps' || '' }} ${{ matrix.browser }}
+
+      - name: Run browser tests on ${{ matrix.browser }}
+        run: npx vitest run --config vitest.browser.config.mts --browser=${{ matrix.browser }}