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/src/pages/LicensePage.tsx

@@ -17,9 +17,9 @@ const FEATURE_LABELS: Record<string, string> = {
 };
 
 const LIMIT_LABELS: Record<string, string> = {
-  maxAgents: 'Max Agents',
-  retentionDays: 'Retention Days',
-  maxEnvironments: 'Max Environments',
+  max_agents: 'Max Agents',
+  retention_days: 'Retention Days',
+  max_environments: 'Max Environments',
 };
 
 function tierColor(tier: string): 'primary' | 'success' | 'warning' | 'error' {