Sort examples before they poison the split

Sort each candidate fine-tuning row into the right split decision. Train Validation Frozen holdout Exclude sort-buckets score-chips Current-policy example that demonstrates the target answer format and has reviewer approval Representative ordinary case used for checkpoint comparison during iteration Rare high-risk escalation case reserved for final launch decision Duplicate of a training row with only the customer name changed Example from the old refund policy that product retired last quarter Clean hard-negative example that clarifies a confused label boundary Small stable slice used to compare checkpoint A against checkpoint B Board-visible safety case nobody may tune against repeatedly

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