When a truncated probe's measured pass-rate lands within trace.adaptive_stop.
boundary_delta of the SLO target, re-measure on the full window and use that
verdict. Offered-L-C-A convergence cannot see engine-state drift in the window
tail, so a near-knee truncated verdict is untrustworthy (validated: prefix 0.96
vs full 0.946 at threshold 0.08594). The guard fires only on feasibility-knee
probes, so non-boundary probes keep the Stop-A saving. Default delta=0.02.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Gahow Wang
dfc823f972