ci: add nightly SonarQube analysis workflow

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitea/workflows/sonarqube.yml

@@ -0,0 +1,41 @@
+name: SonarQube Analysis
+
+on:
+  schedule:
+    - cron: '0 3 * * *'
+  workflow_dispatch:
+
+jobs:
+  sonarqube:
+    runs-on: ubuntu-latest
+    container:
+      image: node:22-bookworm-slim
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run tests with coverage
+        run: npx vitest run --exclude 'e2e/**' --coverage --coverage.reporter=lcov
+
+      - name: Install SonarQube scanner
+        run: npm install -g sonarqube-scanner
+
+      - name: Run SonarQube analysis
+        env:
+          SONAR_HOST_URL: ${{ vars.SONAR_HOST_URL }}
+          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
+        run: |
+          sonar-scanner \
+            -Dsonar.host.url="$SONAR_HOST_URL" \
+            -Dsonar.token="$SONAR_TOKEN" \
+            -Dsonar.projectKey=cameleer-design-system \
+            -Dsonar.projectName="Cameleer Design System" \
+            -Dsonar.sources=src/design-system \
+            -Dsonar.tests=src/design-system \
+            -Dsonar.test.inclusions="**/*.test.tsx,**/*.test.ts" \
+            -Dsonar.javascript.lcov.reportPaths=coverage/lcov.info \
+            -Dsonar.exclusions="**/node_modules/**,**/dist/**"