fix: run sonar scan in sonar container with Java

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Jenkinsfile

@@ -21,7 +21,7 @@ def executeBuildPush() {
 
 def executeScanCodeQuality() {
     stage('Scan Code Quality') {
-        container('node') {
+        container('sonar') {
             scanCodeQuality(projectKey: 'tictactoe')
         }
     }
@@ -40,7 +40,7 @@ def executeBumpChart() {
 }
 
 // ── Pipeline ───────────────────────────────────────────────────────
-podTemplate(yaml: homelabK8sAgent(withTools: true)) {
+podTemplate(yaml: homelabK8sAgent(withTools: true, withSonar: true)) {
     node(POD_LABEL) {
         withEnv(['DOCKER_HOST=tcp://localhost:2375']) {
             checkout scm