curl -X GET "https://api.chanl.ai/api/v1/workspaces/ws_123/personas/persona_456" \
  -H "Authorization: Bearer <access_token>"

{
  "success": true,
  "data": {
    "persona": {
      "id": "persona_456",
      "name": "Frustrated Customer",
      "language": "en",
      "prompt": "You are a frustrated customer who has been having issues with your service for weeks. You are impatient and want immediate resolution. Speak with an upset but not abusive tone. Express your frustration clearly but remain professional.",
      "emotion": "frustrated",
      "difficulty": "hard",
      "backgroundNoise": "office",
      "tags": ["frustrated", "impatient", "support"],
      "created_at": "2024-01-01T10:00:00Z",
      "updated_at": "2024-01-15T09:30:00Z",
      "created_by": {
        "id": "user_123",
        "name": "John Doe",
        "email": "john@acme.com"
      },
      "usage_stats": {
        "total_simulations": 89,
        "avg_score": 72.3,
        "last_used": "2024-01-15T08:45:00Z",
        "success_rate": 94.3,
        "avg_duration": "00:03:12"
      },
      "performance_by_scenario": [
        {
          "scenario_id": "scenario_123",
          "scenario_name": "Billing Inquiry",
          "simulations": 23,
          "avg_score": 68.5
        },
        {
          "scenario_id": "scenario_456",
          "scenario_name": "Technical Support",
          "simulations": 34,
          "avg_score": 75.2
        }
      ]
    }
  }
}