RecoverStaleRunningAsync bulk-flipped Running rows to Failed via raw
ExecuteUpdate, skipping the chain/parent side effects every other terminal
transition triggers. After a worker crash mid-run of a planning/improvement
child, the chain successor's BlockedByTaskId was never cleared and a
WaitingForChildren parent could wedge forever with no event left to
re-check it. Now each recovered task runs the same OnChildTerminalAsync
side effects (chain advance + parent advance) as FailAsync, best-effort.
mika kuns
58741c2bd6