- Add task_ordering_callback field to Crew class with proper validation
- Implement dynamic task selection in _execute_tasks method
- Add comprehensive error handling and validation for callback
- Include tests for various ordering scenarios and edge cases
- Maintain backward compatibility with existing code
- Support both task index and Task object returns from callback
- Add example demonstrating priority-based and conditional ordering
Fixes#3620
Co-Authored-By: João <joao@crewai.com>
