Lots of technical improvements

.gitea/workflows/build-Frontend-a.yml

@@ -52,15 +52,19 @@ jobs:
       - name: Lint & Type Check
         run: npm run lint --if-present
 
-      # 2. Unit Tests (Logik) Not necessary, because atm no tests written
-      #- name: Unit Tests
-      #  run: npx ng test --watch=false --browsers=ChromeHeadless
+      # 2. i18n key sync (en/de must share the same keys)
+      - name: i18n Key Check
+        run: npm run i18n:check
 
-      # 3. Build Production (necessary for lighthouse)      
+      # 3. Unit Tests (Logic)
+      - name: Unit Tests
+        run: npx ng test --watch=false --browsers=ChromeHeadless
+
+      # 4. Build Production (necessary for lighthouse)
       - name: Build Production
         run: npx ng build --configuration production
 
-      # 4. Lighthouse Audit (Performance & SEO)
+      # 5. Lighthouse Audit (Performance & SEO)
       - name: Install Puppeteer
         run: npm install puppeteer --no-save