1. **Code Organization:**
   - The separation of functions into `generate_prompt`, `read_options_file`, and `get_generation_request` seems logical, but we need to ensure that these functions don't introduce any unnecessary overhead.
   - The server connection setup now lives in `handle_request`. This is good for encapsulation, but it might obscure the error paths slightly. We should make sure that all error handling remains clear.

2. **Configuration Handling:**
   - Merging configurations with JSON values seems robust, but there could be edge cases where default options and user-provided configs conflict. We need to ensure that these conflicts are handled gracefully.
   - The error messages for invalid server addresses and port numbers have been improved. However, we should consider adding more specific diagnostic information in case of parsing errors.

3. **Error Reporting:**
   - Logging failed writes to stdout is a good addition, but we should be cautious about the performance impact on large responses. We might need to revisit this if we notice significant overhead.

4. **Logging:**
   - The integration of `env_logger` is fine for development, but we need to ensure that it doesn't interfere with production logs. We should consider providing a way to toggle logging levels based on the environment.
