diff --git a/Jenkinsfile b/Jenkinsfile
index 306c282..6677827 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -433,6 +433,104 @@ printf '%s\n' "${frontend_rc}" > ../build/frontend-tests.rc
       }
     }
 
+    stage('Refresh SonarQube evidence') {
+      when {
+        expression { fileExists('build/backend-coverage.xml') || fileExists('frontend/coverage/lcov.info') }
+      }
+      steps {
+        container('quality-tools') {
+          sh '''#!/usr/bin/env bash
+            set -euo pipefail
+            args=(
+              "-Dsonar.host.url=${SONARQUBE_HOST_URL}"
+              "-Dsonar.login=${SONARQUBE_TOKEN}"
+              "-Dsonar.projectKey=${SONARQUBE_PROJECT_KEY}"
+              "-Dsonar.projectName=${SONARQUBE_PROJECT_KEY}"
+              "-Dsonar.sources=."
+              "-Dsonar.exclusions=**/.git/**,**/build/**,**/dist/**,**/node_modules/**,**/.venv/**,**/__pycache__/**,**/coverage/**,**/test-results/**,**/playwright-report/**,frontend/public/media/**"
+              "-Dsonar.test.inclusions=**/tests/**,**/testing/**,**/*_test.go,**/*.test.ts,**/*.test.tsx,**/*.spec.ts,**/*.spec.tsx"
+            )
+            [ -f build/backend-coverage.xml ] && args+=("-Dsonar.python.coverage.reportPaths=build/backend-coverage.xml")
+            [ -f frontend/coverage/lcov.info ] && args+=("-Dsonar.javascript.lcov.reportPaths=frontend/coverage/lcov.info")
+            set +e
+            sonar-scanner "${args[@]}" | tee build/sonar-scanner.log
+            rc=${PIPESTATUS[0]}
+            set -e
+            printf '%s\n' "${rc}" > build/sonarqube-analysis.rc
+          '''
+        }
+        container('tester') {
+          sh '''
+            set -euo pipefail
+            python3 - <<'PY'
+import base64
+import json
+import os
+import time
+import urllib.parse
+import urllib.request
+
+host = os.getenv('SONARQUBE_HOST_URL', '').strip().rstrip('/')
+project_key = os.getenv('SONARQUBE_PROJECT_KEY', '').strip()
+token = os.getenv('SONARQUBE_TOKEN', '').strip()
+report_path = os.getenv('QUALITY_GATE_SONARQUBE_REPORT', 'build/sonarqube-quality-gate.json')
+payload = {"status": "ERROR", "note": "missing SONARQUBE_HOST_URL and/or SONARQUBE_PROJECT_KEY"}
+analysis_id = ""
+
+
+def request_json(url: str) -> dict:
+    request = urllib.request.Request(url, method="GET")
+    if token:
+        encoded = base64.b64encode(f"{token}:".encode("utf-8")).decode("utf-8")
+        request.add_header("Authorization", f"Basic {encoded}")
+    with urllib.request.urlopen(request, timeout=12) as response:
+        return json.loads(response.read().decode("utf-8"))
+
+
+if host and project_key:
+    task_path = next(
+        (
+            candidate
+            for candidate in (
+                os.path.join('.scannerwork', 'report-task.txt'),
+                os.path.join('build', '.scannerwork', 'report-task.txt'),
+            )
+            if os.path.exists(candidate)
+        ),
+        "",
+    )
+    if os.path.exists(task_path):
+        ce_task_id = ""
+        with open(task_path, encoding="utf-8") as handle:
+            for line in handle:
+                if line.startswith("ceTaskId="):
+                    ce_task_id = line.strip().split("=", 1)[1]
+                    break
+        for _ in range(30):
+            if not ce_task_id:
+                break
+            query = urllib.parse.urlencode({"id": ce_task_id})
+            task = request_json(f"{host}/api/ce/task?{query}").get("task", {})
+            if task.get("status") == "SUCCESS":
+                analysis_id = str(task.get("analysisId") or "")
+                break
+            if task.get("status") in {"FAILED", "CANCELED"}:
+                break
+            time.sleep(2)
+    query = urllib.parse.urlencode({"analysisId": analysis_id} if analysis_id else {"projectKey": project_key})
+    try:
+        payload = request_json(f"{host}/api/qualitygates/project_status?{query}")
+    except Exception as exc:  # noqa: BLE001
+        payload = {"status": "ERROR", "error": str(exc)}
+with open(report_path, "w", encoding="utf-8") as handle:
+    json.dump(payload, handle, indent=2, sort_keys=True)
+    handle.write("\\n")
+PY
+          '''
+        }
+      }
+    }
+
     stage('Publish test metrics') {
       steps {
         container('tester') {
diff --git a/testing/frontend/e2e/home.spec.js b/testing/frontend/e2e/home.spec.js
index bb1885e..2074700 100644
--- a/testing/frontend/e2e/home.spec.js
+++ b/testing/frontend/e2e/home.spec.js
@@ -57,7 +57,7 @@ test("shows the overview and opens the diagram overlay", async ({ page }) => {
 
   const firstCard = page.locator(".mermaid-card").first();
   await expect(firstCard).toBeVisible();
-  await firstCard.getByRole("button", { name: "Full screen" }).click();
+  await firstCard.locator(".diagram").click();
   await expect(page.locator(".overlay")).toBeVisible();
   await page.keyboard.press("Escape");
   await expect(page.locator(".overlay")).toHaveCount(0);