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feat(task): add task labels and push-based task events

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Jürgen Kunz
2026-01-26 00:39:30 +00:00
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changelog.md
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# Changelog
## 2026-01-26 - 4.1.0 - feat(task)
add task labels and push-based task events
- Introduce Task labels: Task accepts labels in constructor and exposes setLabel/getLabel/removeLabel/hasLabel; labels are included (shallow copy) in getMetadata().
- Add push-based events: Task.eventSubject (rxjs Subject<ITaskEvent>) emits 'started','step','completed','failed' with timestamp; 'step' includes stepName and 'failed' includes error string.
- Task now emits events during lifecycle: emits 'started' at run start, 'step' on notifyStep, and 'completed' or 'failed' when finished or errored. getMetadata() now includes labels.
- TaskManager aggregates task events into taskSubject, subscribes on addTask and unsubscribes on removeTask/stop; includes helper methods getTasksByLabel and getTasksMetadataByLabel.
- Public API updated: exported ITaskEvent and TTaskEventType in ts/index.ts and interfaces updated (labels in metadata, new event types).
- Tests and docs: added test/test.12.labels-and-events.ts and updated readme.hints.md to document labels and push-based events.
## 2026-01-25 - 4.0.0 - BREAKING CHANGE(taskbuffer)
Change default Task error handling: trigger() now rejects when taskFunction throws; add catchErrors option (default false) to preserve previous swallow behavior; track errors (lastError, errorCount) and expose them in metadata; improve error propagation and logging across runners, chains, parallels and debounced tasks; add tests and documentation for new behavior.