# Phase-0 Backend Drift Check

Generated at: 2026-02-27T17:36:02.803Z
Artifacts: /home/will/lab/flynn/docs/plans/artifacts
Backends: pi_embedded, native
Freshness max age (hours): 36
Overall gate: PASS

## Thresholds
- requireBaselineHistory: false
- minCandidateSampledEvents: 10
- maxSampledEventsDropPct: 80
- maxRunOutcomesDropPct: 80
- maxCompletionRateDropPp: 35
- maxCancelRateIncreasePp: 25
- maxErrorRateIncreasePp: 25
- maxCancelLatencyP95IncreaseMs: 6000

## pi_embedded
- status: PASS
- candidate: tag=2026-02-27 file=/home/will/lab/flynn/docs/plans/artifacts/phase0_baseline_live_backend_pi_embedded_2026-02-27.json
- candidate generated_at: 2026-02-27T17:36:02.214Z
- baseline: none
- candidate snapshot: sampled=59 outcomes=26 completion=100% cancel=0% error=0% cancel_p95_ms=n/a
- deltas:
  sampled_event_count_pct=n/a
  run_total_outcomes_pct=n/a
  completion_rate_pp=n/a
  cancel_rate_pp=n/a
  error_rate_pp=n/a
  cancel_latency_p95_ms=n/a
  reaction_match_rate_pp=n/a
  reaction_skip_rate_pp=n/a
- freshness gate: PASS (age_hours=0 threshold=36)
- drift gate: PASS
  PASS candidate_sampled_events actual=59 threshold=>= 10
  PASS sampled_events_drop_pct actual=n/a threshold=<= 80
  PASS run_outcomes_drop_pct actual=n/a threshold=<= 80
  PASS completion_rate_drop_pp actual=n/a threshold=<= 35
  PASS cancel_rate_increase_pp actual=n/a threshold=<= 25
  PASS error_rate_increase_pp actual=n/a threshold=<= 25
  PASS cancel_latency_p95_increase_ms actual=n/a threshold=<= 6000

## native
- status: PASS
- candidate: tag=2026-02-27 file=/home/will/lab/flynn/docs/plans/artifacts/phase0_baseline_live_backend_native_2026-02-27.json
- candidate generated_at: 2026-02-27T17:36:02.514Z
- baseline: none
- candidate snapshot: sampled=15 outcomes=2 completion=100% cancel=0% error=0% cancel_p95_ms=n/a
- deltas:
  sampled_event_count_pct=n/a
  run_total_outcomes_pct=n/a
  completion_rate_pp=n/a
  cancel_rate_pp=n/a
  error_rate_pp=n/a
  cancel_latency_p95_ms=n/a
  reaction_match_rate_pp=n/a
  reaction_skip_rate_pp=n/a
- freshness gate: PASS (age_hours=0 threshold=36)
- drift gate: PASS
  PASS candidate_sampled_events actual=15 threshold=>= 10
  PASS sampled_events_drop_pct actual=n/a threshold=<= 80
  PASS run_outcomes_drop_pct actual=n/a threshold=<= 80
  PASS completion_rate_drop_pp actual=n/a threshold=<= 35
  PASS cancel_rate_increase_pp actual=n/a threshold=<= 25
  PASS error_rate_increase_pp actual=n/a threshold=<= 25
  PASS cancel_latency_p95_increase_ms actual=n/a threshold=<= 6000