The task-numbers slice added a UNIQUE index on tasks.number. Ui.Tests seed
TaskEntity rows directly instead of going through TaskRepository, so every row
kept the default Number = 0 and 31 tests failed with
'UNIQUE constraint failed: tasks.number'.
RemoveFromQueue previously gated cascade on PlanningPhase != None,
leaving manually-built chains stuck if their parent had no planning
phase. The handler now matches the X button's HasQueuedSubtasks gate:
queued children are unqueued and unblocked regardless of the parent's
planning phase.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>