- Make id field optional in all Todo interfaces (TodoInfo, Todo, TodoItem)
- Fix null-unsafe comparisons in todo-sync.ts to handle missing ids
- Add test case for todos without id field preservation
- All tests pass and typecheck clean
- Add syncTaskTodoUpdate function for immediate todo updates
- Integrate with TaskCreate and TaskUpdate tools
- Preserve existing todos when updating single task
- Add comprehensive tests for new sync function
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