# システム図

以下はシステム構成の概要（Mermaid シーケンス図とテキスト版の両方）です。Mermaid がサポートされているビューアでは下のシーケンス図が描画されます。

```mermaid
sequenceDiagram
    participant GUI as GUI (stdin/stdout)
    participant Main as mainloop
    participant Controller as Controller
    participant Model as Model
    participant Recorder as Recorder
    participant Transcriber as Transcriber
    participant Translator as Translator
    participant Overlay as Overlay
    participant OSC as OSC
    participant WS as WebSocket

    GUI->>Main: send JSON endpoint
    Main->>Controller: dispatch
    Controller->>Model: startMicTranscript(callback)
    Recorder->>Transcriber: audio data
    Transcriber->>Controller: result (text, language)
    Controller->>Translator: getInputTranslate(text)
    Translator-->>Controller: translations
    Controller->>Overlay: updateOverlay(translation)
    Controller->>OSC: sendMessage(osc_message)
    Controller->>WS: websocketSendMessage(event)
    Controller-->>GUI: run(status, endpoint, result)
```

## テキスト版（簡易）

Main process (`mainloop.py`)
  - stdin -> JSON コマンド -> Main.receiver -> queue
  - Main.handler -> Controller (コマンド実行)
  - run(status, endpoint, result) -> stdout (GUI に通知)

Controller
  - config (読み書き)
  - model (起動/停止/アクション)

Model サブシステム
  - device_manager (デバイス列挙/監視)
  - transcription (recorder -> transcriber)
  - translation (Translator)
  - overlay (OverlayImage -> Overlay)
  - osc (OSCHandler)
  - websocket (WebSocketServer)

データフロー（代表）: 録音 -> audio_queue -> AudioTranscriber -> Controller.micMessage -> Translator -> (OSC / Overlay / WebSocket / ログ)