{
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      "code": "low_tier",
      "scope": "expiry",
      "severity": "WARN",
      "expiry_dt": "2027-03-30",
      "interval_from": null,
      "interval_to": null,
      "strike": null,
      "target_key": "2027-03-30",
      "message_short": "LOW tier (direct straddle)",
      "message_long": "Accept tier: LOW (DIRECT_STRADDLE_ONLY path)",
      "metrics": {}
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    {
      "code": "rejected",
      "scope": "expiry",
      "severity": "INFO",
      "expiry_dt": "2027-06-29",
      "interval_from": null,
      "interval_to": null,
      "strike": null,
      "target_key": "2027-06-29",
      "message_short": "Rejected: insufficient_strikes",
      "message_long": "Expiry rejected: insufficient_strikes",
      "metrics": {
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    },
    {
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      "severity": "INFO",
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      "interval_from": null,
      "interval_to": null,
      "strike": null,
      "target_key": "2027-09-28",
      "message_short": "Rejected: insufficient_strikes",
      "message_long": "Expiry rejected: insufficient_strikes",
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  "summary": {
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    "build_metadata": {
      "git_commit": "df2553882",
      "build_timestamp": "2026-10-05T10:05:09.161981+00:00",
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      "sliding_windows_requested": false,
      "diagnostics_level": "lite",
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    "ui_limits": {
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      "max_horizon_label": "8w_liquid",
      "min_horizon_days": 0,
      "tz": "Asia/Kolkata",
      "notes": "UI clamps horizon; avoid LEAPS/illiquid expiries beyond 8 weeks"
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    "ui_capabilities": {
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      "asof_source": "structure_summary.quote_context_dt",
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      "source": "market_calendar.list_upcoming_events",
      "id_namespace": "market_calendar",
      "id_format": "CATEGORY_YYYYMM",
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}