fix: improve sidebar layout with scrollable sections and bottom-pinned admin

- Applications section: maxHeight 50vh with scroll overflow
- Starred section: maxHeight 30vh with scroll overflow
- Admin section: pinned to bottom of sidebar via position="bottom"
- Update design-system to 0.1.54 (sidebar section maxHeight, position props)

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

ui/package-lock.json

@@ -9,7 +9,7 @@
       "version": "0.0.0",
       "hasInstallScript": true,
       "dependencies": {
-        "@cameleer/design-system": "^0.1.52",
+        "@cameleer/design-system": "^0.1.54",
         "@tanstack/react-query": "^5.90.21",
         "js-yaml": "^4.1.1",
         "lucide-react": "^1.7.0",
@@ -281,9 +281,9 @@
       }
     },
     "node_modules/@cameleer/design-system": {
-      "version": "0.1.52",
-      "resolved": "https://gitea.siegeln.net/api/packages/cameleer/npm/%40cameleer%2Fdesign-system/-/0.1.52/design-system-0.1.52.tgz",
-      "integrity": "sha512-yhxZodFoqGbucNdjRtnlmTt+SI3csv0+nOf8nvD6hmsOjj0WhaqMjdj+hqPpc6EZu3UVEWjfeX+9d/1B7cyy0A==",
+      "version": "0.1.54",
+      "resolved": "https://gitea.siegeln.net/api/packages/cameleer/npm/%40cameleer%2Fdesign-system/-/0.1.54/design-system-0.1.54.tgz",
+      "integrity": "sha512-IX05JmY/JcxTndfDWBHF7uizrRSqJgEM/J5uv5vQerM+Zq02yUzVNcV4QufVYBevGdnI4acUScnDlmSOOb85Qg==",
       "dependencies": {
         "lucide-react": "^1.7.0",
         "react": "^19.0.0",