ci(sonarqube): generate and report server test coverage

SonarQube reported 0% coverage because the analysis workflow never ran
the test suite — the scanner does static analysis only and was handed no
coverage report, and sonar-project.properties defined no report path.

Generate an LCOV report in sonarqube.yml before the scan using Node's
built-in test coverage (run from the repo root so SF: paths are
server/src/... and resolve against the project base dir), and point
the scanner at it via sonar.javascript.lcov.reportPaths. Node's lcov
coverage reporter needs Node >= 22, so the coverage job pins node 22.

Co-Authored-By: Claude <noreply@anthropic.com>

.gitea/workflows/sonarqube.yml

@@ -41,6 +41,31 @@ jobs:
           # compute "new code". A shallow clone degrades both.
           fetch-depth: 0
 
+      # SonarQube runs static analysis only — it never executes the test suite,
+      # so we must produce a coverage report ourselves and hand it to the
+      # scanner (see sonar.javascript.lcov.reportPaths in sonar-project.properties).
+      # Node's built-in `lcov` coverage reporter needs Node >= 22.
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: npm
+          cache-dependency-path: server/package-lock.json
+
+      - name: Install server deps
+        run: npm ci --prefix server
+
+      - name: Generate server test coverage (LCOV)
+        # Run from the repo root (not `--prefix server`) so the LCOV `SF:` paths
+        # are emitted as `server/src/...`, matching sonar.sources and letting the
+        # scanner resolve them against the project base dir. The server tests stub
+        # their models and point the DB pool at a dead port, so no MariaDB is needed.
+        run: |
+          mkdir -p server/coverage
+          node --test --experimental-test-coverage \
+            --test-reporter=spec --test-reporter-destination=stdout \
+            --test-reporter=lcov --test-reporter-destination=server/coverage/lcov.info \
+            server/test/*.test.js
+
       - name: Run SonarQube scan
         uses: sonarsource/sonarqube-scan-action@v4
         env: