{
  "fixture_sha256": "05a8e826369607eb05d5bcf9f67783db6161ed565e35d05f0313a983c37459dc",
  "summary": {
    "cases": 18,
    "policy_pass": 18,
    "baseline_pass": 8
  },
  "outcomes": [
    {
      "case": "single fact",
      "category": "control",
      "expected": [
        "a"
      ],
      "actual": [
        "a"
      ],
      "pass": true,
      "baseline": [
        "a"
      ],
      "baseline_pass": true,
      "selection": {
        "session": "one",
        "at": "2026-02-01T00:00:00Z",
        "query": "office",
        "selected": [
          {
            "id": "a",
            "key": "office",
            "value": "North",
            "source": "original fictional fixture",
            "score": 0.7071067811865475
          }
        ],
        "conflicts": [],
        "trace": [
          {
            "id": "a",
            "reason": "selected",
            "score": 0.7071067811865475
          }
        ]
      }
    },
    {
      "case": "newer independent fact",
      "category": "update",
      "expected": [
        "b"
      ],
      "actual": [
        "b"
      ],
      "pass": true,
      "baseline": [
        "a"
      ],
      "baseline_pass": false,
      "selection": {
        "session": "one",
        "at": "2026-02-01T00:00:00Z",
        "query": "office",
        "selected": [
          {
            "id": "b",
            "key": "office",
            "value": "South",
            "source": "original fictional fixture",
            "score": 0.7071067811865475
          }
        ],
        "conflicts": [
          {
            "key": "office",
            "ids": [
              "a",
              "b"
            ],
            "chosen": "b"
          }
        ],
        "trace": [
          {
            "id": "a",
            "reason": "older_fact"
          },
          {
            "id": "b",
            "reason": "selected",
            "score": 0.7071067811865475
          }
        ]
      }
    },
    {
      "case": "before update",
      "category": "update",
      "expected": [
        "a"
      ],
      "actual": [
        "a"
      ],
      "pass": true,
      "baseline": [
        "a"
      ],
      "baseline_pass": true,
      "selection": {
        "session": "one",
        "at": "2026-01-01T12:00:00Z",
        "query": "office",
        "selected": [
          {
            "id": "a",
            "key": "office",
            "value": "North",
            "source": "original fictional fixture",
            "score": 0.7071067811865475
          }
        ],
        "conflicts": [],
        "trace": [
          {
            "id": "a",
            "reason": "selected",
            "score": 0.7071067811865475
          },
          {
            "id": "b",
            "reason": "not_yet_valid"
          }
        ]
      }
    },
    {
      "case": "correction effective boundary",
      "category": "correction",
      "expected": [
        "b"
      ],
      "actual": [
        "b"
      ],
      "pass": true,
      "baseline": [
        "a"
      ],
      "baseline_pass": false,
      "selection": {
        "session": "one",
        "at": "2026-01-02T00:00:00Z",
        "query": "office",
        "selected": [
          {
            "id": "b",
            "key": "office",
            "value": "South",
            "source": "original fictional fixture",
            "score": 0.7071067811865475
          }
        ],
        "conflicts": [],
        "trace": [
          {
            "id": "a",
            "reason": "corrected"
          },
          {
            "id": "b",
            "reason": "selected",
            "score": 0.7071067811865475
          }
        ]
      }
    },
    {
      "case": "expired correction no resurrection",
      "category": "correction",
      "expected": [],
      "actual": [],
      "pass": true,
      "baseline": [
        "a"
      ],
      "baseline_pass": false,
      "selection": {
        "session": "one",
        "at": "2026-02-01T00:00:00Z",
        "query": "office",
        "selected": [],
        "conflicts": [],
        "trace": [
          {
            "id": "a",
            "reason": "corrected"
          },
          {
            "id": "b",
            "reason": "expired"
          }
        ]
      }
    },
    {
      "case": "deleted correction no resurrection",
      "category": "deletion",
      "expected": [],
      "actual": [],
      "pass": true,
      "baseline": [
        "a"
      ],
      "baseline_pass": false,
      "selection": {
        "session": "one",
        "at": "2026-02-01T00:00:00Z",
        "query": "office",
        "selected": [],
        "conflicts": [],
        "trace": [
          {
            "id": "a",
            "reason": "corrected"
          },
          {
            "id": "b",
            "reason": "deleted"
          }
        ]
      }
    },
    {
      "case": "deleted original",
      "category": "deletion",
      "expected": [],
      "actual": [],
      "pass": true,
      "baseline": [
        "a"
      ],
      "baseline_pass": false,
      "selection": {
        "session": "one",
        "at": "2026-02-01T00:00:00Z",
        "query": "office",
        "selected": [],
        "conflicts": [],
        "trace": [
          {
            "id": "a",
            "reason": "deleted"
          }
        ]
      }
    },
    {
      "case": "deletion applies to past queries",
      "category": "deletion",
      "expected": [],
      "actual": [],
      "pass": true,
      "baseline": [
        "a"
      ],
      "baseline_pass": false,
      "selection": {
        "session": "one",
        "at": "2026-01-01T00:00:00Z",
        "query": "office",
        "selected": [],
        "conflicts": [],
        "trace": [
          {
            "id": "a",
            "reason": "deleted"
          }
        ]
      }
    },
    {
      "case": "expiration boundary",
      "category": "expiration",
      "expected": [],
      "actual": [],
      "pass": true,
      "baseline": [
        "a"
      ],
      "baseline_pass": false,
      "selection": {
        "session": "one",
        "at": "2026-02-01T00:00:00Z",
        "query": "office",
        "selected": [],
        "conflicts": [],
        "trace": [
          {
            "id": "a",
            "reason": "expired"
          }
        ]
      }
    },
    {
      "case": "future assertion",
      "category": "validity",
      "expected": [],
      "actual": [],
      "pass": true,
      "baseline": [
        "b"
      ],
      "baseline_pass": false,
      "selection": {
        "session": "one",
        "at": "2026-01-01T00:00:00Z",
        "query": "office",
        "selected": [],
        "conflicts": [],
        "trace": [
          {
            "id": "b",
            "reason": "not_yet_valid"
          }
        ]
      }
    },
    {
      "case": "independent expiry fallback",
      "category": "expiration",
      "expected": [
        "a"
      ],
      "actual": [
        "a"
      ],
      "pass": true,
      "baseline": [
        "a"
      ],
      "baseline_pass": true,
      "selection": {
        "session": "one",
        "at": "2026-02-01T00:00:00Z",
        "query": "office",
        "selected": [
          {
            "id": "a",
            "key": "office",
            "value": "North",
            "source": "original fictional fixture",
            "score": 0.7071067811865475
          }
        ],
        "conflicts": [],
        "trace": [
          {
            "id": "a",
            "reason": "selected",
            "score": 0.7071067811865475
          },
          {
            "id": "b",
            "reason": "expired"
          }
        ]
      }
    },
    {
      "case": "other session invisible",
      "category": "isolation",
      "expected": [],
      "actual": [],
      "pass": true,
      "baseline": [],
      "baseline_pass": true,
      "selection": {
        "session": "one",
        "at": "2026-02-01T00:00:00Z",
        "query": "office",
        "selected": [],
        "conflicts": [],
        "trace": []
      }
    },
    {
      "case": "other session no ranking influence",
      "category": "isolation",
      "expected": [
        "a"
      ],
      "actual": [
        "a"
      ],
      "pass": true,
      "baseline": [
        "a"
      ],
      "baseline_pass": true,
      "selection": {
        "session": "one",
        "at": "2026-02-01T00:00:00Z",
        "query": "office",
        "selected": [
          {
            "id": "a",
            "key": "office",
            "value": "North",
            "source": "original fictional fixture",
            "score": 0.7071067811865475
          }
        ],
        "conflicts": [],
        "trace": [
          {
            "id": "a",
            "reason": "selected",
            "score": 0.7071067811865475
          }
        ]
      }
    },
    {
      "case": "absent vocabulary abstention",
      "category": "retrieval",
      "expected": [],
      "actual": [],
      "pass": true,
      "baseline": [],
      "baseline_pass": true,
      "selection": {
        "session": "one",
        "at": "2026-02-01T00:00:00Z",
        "query": "unrelated",
        "selected": [],
        "conflicts": [],
        "trace": [
          {
            "id": "a",
            "reason": "no_overlap",
            "score": 0.0
          }
        ]
      }
    },
    {
      "case": "timestamp tie",
      "category": "conflict",
      "expected": [
        "z"
      ],
      "actual": [
        "z"
      ],
      "pass": true,
      "baseline": [
        "a"
      ],
      "baseline_pass": false,
      "selection": {
        "session": "one",
        "at": "2026-02-01T00:00:00Z",
        "query": "office",
        "selected": [
          {
            "id": "z",
            "key": "office",
            "value": "West",
            "source": "original fictional fixture",
            "score": 0.7071067811865475
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        ],
        "conflicts": [
          {
            "key": "office",
            "ids": [
              "a",
              "z"
            ],
            "chosen": "z"
          }
        ],
        "trace": [
          {
            "id": "a",
            "reason": "older_fact"
          },
          {
            "id": "z",
            "reason": "selected",
            "score": 0.7071067811865475
          }
        ]
      }
    },
    {
      "case": "concurrent corrections",
      "category": "conflict",
      "expected": [
        "c"
      ],
      "actual": [
        "c"
      ],
      "pass": true,
      "baseline": [
        "a"
      ],
      "baseline_pass": false,
      "selection": {
        "session": "one",
        "at": "2026-02-01T00:00:00Z",
        "query": "office",
        "selected": [
          {
            "id": "c",
            "key": "office",
            "value": "West",
            "source": "original fictional fixture",
            "score": 0.7071067811865475
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        ],
        "conflicts": [
          {
            "key": "office",
            "ids": [
              "b",
              "c"
            ],
            "chosen": "c"
          }
        ],
        "trace": [
          {
            "id": "a",
            "reason": "corrected"
          },
          {
            "id": "b",
            "reason": "older_fact"
          },
          {
            "id": "c",
            "reason": "selected",
            "score": 0.7071067811865475
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        ]
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    },
    {
      "case": "retrieval chooses matching key",
      "category": "retrieval",
      "expected": [
        "b"
      ],
      "actual": [
        "b"
      ],
      "pass": true,
      "baseline": [
        "b"
      ],
      "baseline_pass": true,
      "selection": {
        "session": "one",
        "at": "2026-02-01T00:00:00Z",
        "query": "lunch",
        "selected": [
          {
            "id": "b",
            "key": "lunch",
            "value": "noon",
            "source": "original fictional fixture",
            "score": 0.7071067811865475
          }
        ],
        "conflicts": [],
        "trace": [
          {
            "id": "a",
            "reason": "no_overlap",
            "score": 0.0
          },
          {
            "id": "b",
            "reason": "selected",
            "score": 0.7071067811865475
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    },
    {
      "case": "late observation not a valid-time override",
      "category": "update",
      "expected": [
        "b"
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      "actual": [
        "b"
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      "pass": true,
      "baseline": [
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      "baseline_pass": true,
      "selection": {
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        "at": "2026-02-01T00:00:00Z",
        "query": "office",
        "selected": [
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            "id": "b",
            "key": "office",
            "value": "South",
            "source": "original fictional fixture",
            "score": 0.7071067811865475
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        "conflicts": [
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            "key": "office",
            "ids": [
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            "chosen": "b"
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        "trace": [
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            "reason": "selected",
            "score": 0.7071067811865475
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            "id": "c",
            "reason": "older_fact"
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  "environment": {
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