diff --git a/.gitea/workflows/security.yml b/.gitea/workflows/security.yml
index ff2c9a1..aeed7ef 100644
--- a/.gitea/workflows/security.yml
+++ b/.gitea/workflows/security.yml
@@ -54,3 +54,26 @@ jobs:
           cd frontend
           npm audit --audit-level=high || true
         continue-on-error: true
+
+  frontend-build:
+    name: Frontend Build (tsc + vite)
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+          cache-dependency-path: frontend/package-lock.json
+
+      - name: Install dependencies
+        run: |
+          cd frontend
+          npm ci
+
+      - name: Build (blockiert bei TS-/Build-Fehlern)
+        run: |
+          cd frontend
+          npm run build