feat: add About Me dialog showing user info, roles, and groups

- Add GET /api/v1/auth/me endpoint returning current user's UserDetail
- Add AboutMeDialog component with role badges and group memberships
- Add userMenuItems prop to TopBar via design-system update
- Wire "About Me" menu item into user dropdown above Logout

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": "^0.1.38",
+        "@cameleer/design-system": "^0.0.0-snapshot.20260408.7e54514",
         "@tanstack/react-query": "^5.90.21",
         "lucide-react": "^1.7.0",
         "openapi-fetch": "^0.17.0",
@@ -279,9 +279,9 @@
       }
     },
     "node_modules/@cameleer/design-system": {
-      "version": "0.1.38",
-      "resolved": "https://gitea.siegeln.net/api/packages/cameleer/npm/%40cameleer%2Fdesign-system/-/0.1.38/design-system-0.1.38.tgz",
-      "integrity": "sha512-8tsWZTYkLg3JbvA8p+MVP05nsuJnIXZZvgx6d71e7BO3rtoI8bpvQn/ZElag6tQnBEbeqStQqqDnZ5TAWN2pvw==",
+      "version": "0.0.0-snapshot.20260408.7e54514",
+      "resolved": "https://gitea.siegeln.net/api/packages/cameleer/npm/%40cameleer%2Fdesign-system/-/0.0.0-snapshot.20260408.7e54514/design-system-0.0.0-snapshot.20260408.7e54514.tgz",
+      "integrity": "sha512-YgwpQfwewx7gljOnl2s6V4Ixp4D1R0t+rMf7h06Tc6dOGikibZ9GL37nxqY/6YxwrfqMRkj6DBDEfjrv0iFF7g==",
       "dependencies": {
         "lucide-react": "^1.7.0",
         "react": "^19.0.0",