curl -X GET https://api-be.atthene.com/api/v1/sessions/ \ -H "x-api-key: YOUR_API_KEY"
[ { "session_id": "session_abc123", "config_hash": "a1b2c3d4e5f6", "created_at": "2025-01-15T10:30:00Z", "status": "active" } ]