Yota Hamada 9841e6ed70 feat(api): add singleton flag to enqueue API (#1483) ... * **New Features** * Added a singleton flag to DAG enqueue requests to prevent duplicate runs when a DAG is already running or queued. * **API Changes** * Enqueue endpoint now can return HTTP 409 Conflict for singleton-mode conflicts. * Added more specific authentication error codes. * **Behavioral Changes** * Enqueue/retry paths no longer perform prior maxActiveRuns queue-length enforcement unless singleton is used. * Queue concurrency now honors DAG-configured max active runs for DAG-based queues. * **Tests** * Added integration test validating max-active-runs behavior for DAG-based queues.		2025-12-14 19:05:53 +09:00
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v1	status: rename canceled state to aborted across CLI, API, and UI (#1405)	2025-11-11 23:54:43 +09:00
v2	feat(api): add singleton flag to enqueue API (#1483)	2025-12-14 19:05:53 +09:00