Experiments

Version 19 restores grounded refund exception handling across the weekly return-risk cohort while keeping cost close to the compressed rollout.

Still tuning how aggressively chargeback-like billing cases should be escalated for premium accounts.

The revised fallback sequence cuts the worst timeout impact without forcing every shipping case onto the expensive baseline model.

Operator summaries are now specific enough to support investigation handoff and executive review without requiring a replay first.