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e4fec35772
Three findings from an adversarial review of this branch: 1. CRITICAL - OpCache.GetStatus crashed under concurrent load. m.Map() returns the live internal map by reference, so deleting from it on the read path was an unsynchronized write to a map four HTTP handlers poll every ~1s -> a 'concurrent map writes' fatal. Rewritten to iterate a Keys() snapshot, build a fresh result map, and apply evictions via the locked DeleteUUID after the loop. Added a -race concurrency regression guard. 2. HIGH - GetStatus evicted failed ops too, hiding them from /api/operations and breaking the dismiss-failed-op flow (the panel keeps Error != nil ops so the admin can read the error and click Dismiss). Eviction now fires only for terminal ops with Error == nil (success/cancelled); failures are retained. 3. MEDIUM - DeleteStalePendingBackendOps missed StatusUnhealthy nodes. A node marked unhealthy on a NATS ErrNoResponders never transitions to offline (health.go skips re-marking it), so its pending ops leaked exactly like the offline case. Unhealthy is now reaped via the same stale-heartbeat grace path (a fresh-heartbeat node is recovering and keeps its op). Assisted-by: Claude:claude-opus-4-8 [Claude Code] Signed-off-by: Ettore Di Giacinto <mudler@localai.io>