- Introduce `tmux_logger` app for categorized output
- Implement pane logging via `tmux pipe-pane`
- Add `log`, `logpath`, `logreset` options to panes
- Update `Pane` struct with logging state and cleanup
- Refactor `logger.new` to use `LoggerFactoryArgs`
- Add `Pane.kill_processes` for main and child processes
- Include fallback process group cleanup for panes
- Implement window-level process cleanup
- Integrate session-level process cleanup
- Add tmux process cleanup test scripts
- Add `resize_panes_equal()` to `Window`.
- Dynamically apply `tmux` layouts based on pane count.
- Implement `get_width()` and `get_height()` for `Pane`.
- Update test to create 4 panes and use equal resizing.
