Task history lacks parent-child relationship tracking for subtasks #3688
Description
Problem
The current task history view displays all tasks in a flat list, without any indication of parent-child relationships. When a user creates subtasks using the 'new_task' tool, there is no way to visually identify which tasks are related to each other or which task spawned another task.
This makes it difficult for users to:
- Track the lineage of related tasks
- Understand which tasks were created as subtasks of others
- Organize and navigate through complex task workflows
- Identify completed vs. in-progress tasks in a workflow
Additionally, there's no visual indication of which tasks have been completed (via 'attempt_completion'), making it harder to track progress across related tasks.
Impact
Users working with complex workflows that involve multiple subtasks have no way to visualize the relationships between tasks, leading to confusion and reduced productivity when trying to understand task history.