Add documentation for modules and runtime instructions

- Created detailed documentation for the device_manager, model, model_extra, osc, overlay, overlay_image, transcription, translation, transliteration, utils, watchdog, and websocket modules.
- Added a comprehensive run events payloads document outlining the payloads sent during various run events in the controller.
- Included runtime instructions and dependencies for setting up the project in a Windows environment.
- Introduced a mypy configuration file to manage type checking and ignore errors in specific modules temporarily.

src-python/docs/diagrams.md

@@ -0,0 +1,51 @@
+# 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)
+