feat: add SFX volume control and improve audio feedback

- Implemented separate sound effects volume control in settings.
- Updated backend to handle new `sfx_volume` parameter.
- Enhanced UI to include sound effects volume slider in admin panel.
- Integrated sound effects for various user interactions (clicks, navigation, alerts).
- Added a new global sound engine to manage audio synthesis without external files.
- Updated documentation for Docker deployment and Windows packaging.
- Refactored audio context management to ensure sound effects are available post user interaction.

backend/main.py

@@ -67,7 +67,7 @@ def main():
     print(f" 本地资源     : TORCH_HOME={os.environ.get('TORCH_HOME')}")
     print(f"               NLTK_DATA={os.environ.get('NLTK_DATA')}")
     print("=" * 64)
-    uvicorn.run("app.main:app", host=settings.HOST, port=settings.PORT, reload=True)
+    uvicorn.run("app.main:app", host=settings.HOST, port=settings.PORT, reload=False)
 
 
 if __name__ == "__main__":