feat: upgrade design system to v0.1.19, use onNavigate/fillHeight, add SonarQube workflow

- Use Sidebar onNavigate callback instead of display:contents click interception
- Use DataTable fillHeight prop instead of manual scroll wrapper divs
- Fix DataTable scroll/pagination by adding overflow:hidden to content container
- Fix left panel in split view to use flex column instead of overflow:auto
- Make error tab stack trace scrollable for large traces
- Add nightly SonarQube workflow with manual trigger support

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

ui/package-lock.json

@@ -8,7 +8,7 @@
       "name": "ui",
       "version": "0.0.0",
       "dependencies": {
-        "@cameleer/design-system": "^0.1.18",
+        "@cameleer/design-system": "^0.1.19",
         "@tanstack/react-query": "^5.90.21",
         "lucide-react": "^1.7.0",
         "openapi-fetch": "^0.17.0",
@@ -277,9 +277,9 @@
       }
     },
     "node_modules/@cameleer/design-system": {
-      "version": "0.1.18",
-      "resolved": "https://gitea.siegeln.net/api/packages/cameleer/npm/%40cameleer%2Fdesign-system/-/0.1.18/design-system-0.1.18.tgz",
-      "integrity": "sha512-uvGr4PFw6Eya+h9DSD0wBnzjIXhZpcndR2dDJX2tMvQqgy+32WTTTQ8BZZWZjOKLSv63UpBN/fwVSXtkA4dnqA==",
+      "version": "0.1.19",
+      "resolved": "https://gitea.siegeln.net/api/packages/cameleer/npm/%40cameleer%2Fdesign-system/-/0.1.19/design-system-0.1.19.tgz",
+      "integrity": "sha512-YpYJysWycqRiTMco3Fco8AIatJz/IU7EecTmUQLUrkcBUGfHOWzCTMYm47jRvNAjQrANoanYnXPKXRHg91NS2w==",
       "dependencies": {
         "lucide-react": "^1.7.0",
         "react": "^19.0.0",