- Update the Subscribe and SubscribeFrom methods to return a cancel function, ensuring proper resource cleanup when subscriptions are no longer needed.
- Modify unsubscribe logic to close channels safely, preventing potential panics from sending on closed channels.
- Enhance test cases to utilize the new cancel functionality, ensuring robust handling of subscriptions in various scenarios.
- Updated the TraceNode structure to allow multiple parent IDs, facilitating implicit joins in trace management.
- Enhanced the TraceNodeOption to include a type field for better categorization of nodes.
- Refactored related methods in the trace manager and node handling to accommodate the new parent structure and type field.
- Improved test coverage for trace node creation and retrieval, ensuring robust handling of the new multi-parent functionality.
