add client build check

.github/workflows/check-build.yml

@@ -4,6 +4,23 @@ on:
   workflow_dispatch:
 
 jobs:
+  build-client:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+
+      - name: Install client dependencies
+        working-directory: client
+        run: npm install
+
+      - name: Check client build
+        working-directory: client
+        run: npm run build
   build-server:
     runs-on: ubuntu-latest
     steps: