- Introduce a new `.env.example` file for environment variable setup, including `PUBLIC_IP`, `TURN_SECRET`, and `TURN_URLS` for WebRTC TURN server configuration.
- Update `docker-compose.yaml` to support TURN server deployment with necessary environment variables and commands.
- Enhance backend configuration and routes to include WebRTC ICE server settings, allowing for STUN/TURN server integration.
- Implement a new service for managing WebRTC ICE server configurations, providing credentials for TURN when configured.
- Modify frontend API to fetch ICE server configurations dynamically, improving support for cross-network voice preview.
- Introduce `setup-certs.sh` script for generating trusted local TLS certificates using mkcert.
- Add Nginx configuration files for local and Docker environments to handle HTTPS requests and proxy to backend services.
- Update `docker-compose.yaml` to include Nginx service for unified TLS entry and adjust frontend service ports for local development.
- Create `AGENTS.md` and `README.md` files to document the local HTTPS setup process and usage instructions.
- Modify backend startup commands in `README.md` for consistency with new requirements.
- Add `.gitignore` to exclude generated certificates from version control.
