Oracle flagged: staleSweepCompleted was set to true BEFORE
sweepStaleOmoAgentSessions() ran, so any throw from the first
invocation would permanently disable stale cleanup for the rest
of the process lifetime.
Fix:
- Move staleSweepCompleted=true into the try-block success branch.
- Add staleSweepInProgress guard so concurrent onSessionCreated calls
do not invoke sweep twice in parallel (sweep is idempotent, but the
guard prevents doubled log noise).
- finally{} clears the inProgress flag regardless of outcome.
- cleanup() resets both flags.
Two new tests cover: retry after a thrown first attempt, and single
invocation when subsequent spawns follow a successful first sweep.
YeonGyu-Kim
913fac05f5