Add Chromatic CI workflow.

.github/workflows/chromatic.yaml

@@ -0,0 +1,22 @@
+name: "Chromatic"
+
+on: push
+
+jobs:
+  chromatic:
+    name: Run Chromatic
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+      - name: Install dependencies
+        run: npm ci
+      - name: Run Chromatic
+        uses: chromaui/action@latest
+        with:
+          projectToken: ${{ secrets.CHROMATIC_PROJECT_TOKEN }}