- API client sends _environment param on all content/asset requests
- GET /api/environments endpoint to list configured environments
- EnvironmentSwitcher in Sidebar with i18n label "Space"
- clearSession() also clears environment from sessionStorage
- .env.example documents ADMIN_USERNAME/PASSWORD/SESSION_SECRET
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>