roles:
  - role_id: "mentor"
    display_name: "Mentor"
    operation: "chat"
    modality: "text"
    prompt_policy:
      system_prompt: "Guide the user without taking over the task."
    routing_policy:
      preferred_families: ["Qwen3", "Mistral"]
      min_context: 8192

  - role_id: "embedder"
    display_name: "Embedder"
    operation: "embeddings"
    modality: "text"
    routing_policy:
      require_loaded: true

  - role_id: "transcriber"
    display_name: "Transcriber"
    operation: "transcription"
    modality: "audio"