fix: display username in UI, fix license limits key mismatch

- Read user profile from Logto ID token in OrgResolver, store in
  Zustand org store, display in sidebar footer and TopBar avatar
- Fix license limits showing "—" by aligning frontend LIMIT_LABELS
  keys with backend snake_case convention (max_agents, retention_days,
  max_environments)
- Bump @cameleer/design-system to v0.1.38 (font-size floor)
- Add dev volume mount for local UI hot-reload without image rebuild

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

ui/package.json

@@ -10,7 +10,7 @@
     "postinstall": "node -e \"const fs=require('fs'),p='node_modules/@cameleer/design-system/assets/';if(fs.existsSync('public')){fs.copyFileSync(p+'cameleer3-logo.svg','public/favicon.svg')}\""
   },
   "dependencies": {
-    "@cameleer/design-system": "0.1.37",
+    "@cameleer/design-system": "0.1.38",
     "@logto/react": "^4.0.13",
     "@tanstack/react-query": "^5.90.0",
     "lucide-react": "^1.7.0",