- Added JetStream compatibility for the new desired‑state metalayer with aggregated snapshot deletions and faster pending calculations
- Replaced fastrand and math/rand with math/rand/v2, reduced lock contention and added early message‑size checks for performance gains
- Fixed numerous JetStream bugs including mapping functions, underflow in delete skips, catch‑up signal blocking, consumer removal/recreation issues, filestore panic, deduplication race, and several consumer/stream state race conditions