Outdoor Spa / Jacuzzi Foam-Cover Waterlog Detector & Standby-vs-Reheat Judge

Deterministic Lumped-capacitance Newtonian cooling curve tau = m*Cp / (UA_shell + UA_lid) inverse parameter identification engine (.json, .pdf, .csv) built for Jacuzzi, Hot Spring, Sundance Spas, Balboa — zero-upload ephemeral Wasm RAM execution.

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