Exact original source bytes are included under originals. The browser backup ZIP retains restoration metadata. Keep it separately. The source and result JSON preserves parsed values, frozen rules, complete findings and any transformed or sampled output. Review unresolved rows before relying on results. The formal reports are bounded summaries. The named arithmetic method ran locally. No import into an external system, registry check, macro execution or external connection occurred. Calculations use supplied observations and explicitly approved methods. Original files and prior work remain in this browser. Results do not establish source authenticity, population completeness, causation, regulatory compliance or approval to make a customer, supplier, lending or model decision.