```plaintext
%% Handler Deployment Strategy (ADR-0019)
%% C4 Component diagram showing platform layers with Ray cluster

flowchart TB
    subgraph platform["🏗️ Platform Layer"]
        direction LR
        kubeflow["📊 Kubeflow<br/>Pipelines"]
        kserve["🎯 KServe<br/>(visibility)"]
        mlflow["📈 MLflow<br/>(registry)"]
    end

    subgraph ray["⚡ Ray Cluster"]
        direction TB
        
        subgraph gpu_apps["🎮 GPU Inference (Workers)"]
            direction LR
            llm["/llm<br/>vLLM<br/>🟢 khelben 0.95 GPU"]
            whisper["/whisper<br/>Whisper<br/>🟡 elminster 0.5 GPU"]
            tts["/tts<br/>XTTS<br/>🟡 elminster 0.5 GPU"]
            embeddings["/embeddings<br/>BGE<br/>🔴 drizzt 0.8 GPU"]
            reranker["/reranker<br/>BGE<br/>🔵 danilo 0.8 GPU"]
        end

        subgraph cpu_apps["🖥️ CPU Handlers (Head Node)"]
            direction LR
            chat["/chat<br/>ChatHandler<br/>0 GPU"]
            voice["/voice<br/>VoiceHandler<br/>0 GPU"]
        end
    end

    subgraph support["🔧 Supporting Services"]
        direction LR
        nats["📨 NATS<br/>(events)"]
        milvus["🔍 Milvus<br/>(vectors)"]
        valkey["💾 Valkey<br/>(cache)"]
    end

    subgraph pypi["📦 Package Registry"]
        gitea_pypi["Gitea PyPI<br/>• handler-base<br/>• chat-handler<br/>• voice-assistant"]
    end

    %% Connections
    kubeflow --> ray
    kserve --> ray
    mlflow --> ray

    cpu_apps -->|"Ray internal calls"| gpu_apps
    cpu_apps --> nats
    cpu_apps --> milvus
    cpu_apps --> valkey

    gitea_pypi -->|"pip install<br/>runtime_env"| cpu_apps

    classDef platform fill:#9b59b6,color:white
    classDef gpu fill:#e74c3c,color:white
    classDef cpu fill:#3498db,color:white
    classDef support fill:#27ae60,color:white
    classDef registry fill:#f39c12,color:black

    class kubeflow,kserve,mlflow platform
    class llm,whisper,tts,embeddings,reranker gpu
    class chat,voice cpu
    class nats,milvus,valkey support
    class gitea_pypi registry

```