- Introduced SafeWebSocketWriter to ensure thread-safe writes to WebSocket connections.
- Updated WebSocket handling in certificate issuance, revocation, Nginx log tailing, and system upgrades to use the new writer.
- Enhanced WebSocket client management in the site navigation module for improved message handling and connection stability.
- Introduced `WebSocketTrustedOrigins` setting in `app.example.ini` and corresponding documentation.
- Refactored WebSocket origin checks across multiple API endpoints to utilize the new middleware for improved security.
- Added tests for the new origin validation logic to ensure proper handling of trusted origins and node secret requests.
