{
  "findings": [
    {
      "title": "Keep session mutations blocked throughout teardown",
      "body": "When fatal cleanup is waiting on an in-flight or retrying outcome, `teardownSession()` has already set `stopping = true`, so this guard makes both `session_before_switch` and `session_before_branch` return without `{ cancel: true }`. A concrete failing interleaving is: an outcome send is pending, the listener exhausts its restart budget and enters teardown, then the user switches or branches before that send completes; OMP is allowed to mutate away from the still-bound session while the old item remains in custody, and the eventual `runtimeCtx.shutdown()` can then shut down the newly selected session. Continue cancelling session mutations until endpoint teardown has actually completed.",
      "priority": 1,
      "confidence": 0.97,
      "file_path": "adapter/strings/omp-spt.mjs",
      "line_start": 530,
      "line_end": 530
    },
    {
      "title": "Retry teardown after a joined session-end failure",
      "body": "Concurrent fatal cleanup and `session_shutdown` share the same `teardownPromise`, but if their shared `session-end` call rejects, the catch only clears the cache after both callers have already joined that failed attempt. The failing interleaving is: listener exhaustion starts `session-end`, lifecycle shutdown enters before it settles, then the command rejects transiently; fatal cleanup logs and calls shutdown while shutdown is already in flight, the lifecycle handler logs and returns, and no caller performs the now-possible retry, leaving the endpoint bound. The existing test retries only by emitting a second shutdown after the first failure, so it does not cover this overlap; one of the joined teardown paths must retry after the cache resets.",
      "priority": 1,
      "confidence": 0.93,
      "file_path": "adapter/strings/omp-spt.mjs",
      "line_start": 290,
      "line_end": 299
    }
  ],
  "overall_correctness": "incorrect",
  "explanation": "Two lifecycle races remain: fatal teardown prematurely permits session mutation while custody is still pending, and a transient session-end failure can consume concurrent fatal and lifecycle teardown requests without a retry. Both can leave session or endpoint state inconsistent despite the new happy-path and sequential retry tests.",
  "confidence": 0.95
}