- Enhanced the `pin_duty_cmd` function by improving code formatting for better readability, ensuring consistent style across the codebase.
- Updated unit tests for `pin_duty_cmd` to follow the same formatting improvements, enhancing clarity and maintainability.
- No functional changes were made; the focus was solely on code style and organization.
- Updated the `pin_duty_cmd` to handle cases where no message ID is found by sending a new duty message, pinning it, saving the pin, and scheduling the next update.
- Improved error handling for message sending and pinning operations, providing appropriate replies based on success or failure.
- Enhanced unit tests to cover the new behavior, ensuring proper functionality and error handling in various scenarios.
