{
  "schemaVersion": "1.0",
  "ruleVersion": "1.0.0",
  "synthetic": true,
  "description": "Six authored fixtures for the local feed-freshness checker. Frozen asOf values make historical examples reproducible; these are not customer or provider observations.",
  "cases": [
    {
      "id": "sale-begins",
      "label": "A sale begins",
      "reason": "The supplied current source has a 14.00 USD sale; the feed still declares no sale.",
      "input": {
        "schemaVersion": "1.0",
        "profile": "openai-native-stable",
        "asOf": "2026-09-21T16:00:00Z",
        "maxAgeHours": 24,
        "source": {
          "capturedAt": "2026-09-21T15:45:00Z",
          "evidenceRef": "synthetic:merchant-export-20260921-1545",
          "items": [
            {
              "item_id": "MUG-350-BLUE",
              "price": "18.00 USD",
              "sale_price": "14.00 USD",
              "availability": "in_stock"
            }
          ]
        },
        "feed": {
          "capturedAt": "2026-09-21T15:30:00Z",
          "evidenceRef": "synthetic:feed-export-20260921-1530",
          "items": [
            {
              "item_id": "MUG-350-BLUE",
              "price": "18.00 USD",
              "sale_price": null,
              "availability": "in_stock"
            }
          ]
        }
      },
      "expectedStatus": "update_needed"
    },
    {
      "id": "sale-ends",
      "label": "A sale ends",
      "reason": "The supplied source explicitly declares no sale; the feed still has the 14.00 USD sale.",
      "input": {
        "schemaVersion": "1.0",
        "profile": "openai-native-stable",
        "asOf": "2026-09-21T16:00:00Z",
        "maxAgeHours": 24,
        "source": {
          "capturedAt": "2026-09-21T15:45:00Z",
          "evidenceRef": "synthetic:merchant-export-20260921-1545",
          "items": [
            {
              "item_id": "MUG-350-BLUE",
              "price": "18.00 USD",
              "sale_price": null,
              "availability": "in_stock"
            }
          ]
        },
        "feed": {
          "capturedAt": "2026-09-21T15:30:00Z",
          "evidenceRef": "synthetic:feed-export-20260921-1530",
          "items": [
            {
              "item_id": "MUG-350-BLUE",
              "price": "18.00 USD",
              "sale_price": "14.00 USD",
              "availability": "in_stock"
            }
          ]
        }
      },
      "expectedStatus": "update_needed"
    },
    {
      "id": "stock-sells-out",
      "label": "An item sells out",
      "reason": "Current supplied stock is out_of_stock while the feed still says in_stock.",
      "input": {
        "schemaVersion": "1.0",
        "profile": "openai-native-stable",
        "asOf": "2026-09-21T16:00:00Z",
        "maxAgeHours": 24,
        "source": {
          "capturedAt": "2026-09-21T15:45:00Z",
          "evidenceRef": "synthetic:merchant-export-20260921-1545",
          "items": [
            {
              "item_id": "MUG-350-BLUE",
              "price": "18.00 USD",
              "sale_price": null,
              "availability": "out_of_stock"
            }
          ]
        },
        "feed": {
          "capturedAt": "2026-09-21T15:30:00Z",
          "evidenceRef": "synthetic:feed-export-20260921-1530",
          "items": [
            {
              "item_id": "MUG-350-BLUE",
              "price": "18.00 USD",
              "sale_price": null,
              "availability": "in_stock"
            }
          ]
        }
      },
      "expectedStatus": "update_needed"
    },
    {
      "id": "preorder-becomes-available",
      "label": "A preorder becomes available",
      "reason": "The current supplied source explicitly says in_stock. No release date is used to infer this transition.",
      "input": {
        "schemaVersion": "1.0",
        "profile": "openai-native-stable",
        "asOf": "2026-09-21T16:00:00Z",
        "maxAgeHours": 24,
        "source": {
          "capturedAt": "2026-09-21T15:45:00Z",
          "evidenceRef": "synthetic:merchant-export-20260921-1545",
          "items": [
            {
              "item_id": "MUG-350-BLUE",
              "price": "18.00 USD",
              "sale_price": null,
              "availability": "in_stock"
            }
          ]
        },
        "feed": {
          "capturedAt": "2026-09-21T15:30:00Z",
          "evidenceRef": "synthetic:feed-export-20260921-1530",
          "items": [
            {
              "item_id": "MUG-350-BLUE",
              "price": "18.00 USD",
              "sale_price": null,
              "availability": "pre_order"
            }
          ]
        }
      },
      "expectedStatus": "update_needed"
    },
    {
      "id": "one-variant-changes",
      "label": "Only one variant changes",
      "reason": "The blue variant sells out; the white variant remains in stock. Exact item IDs determine the comparison even when row order changes.",
      "input": {
        "schemaVersion": "1.0",
        "profile": "openai-native-stable",
        "asOf": "2026-09-21T16:00:00Z",
        "maxAgeHours": 24,
        "source": {
          "capturedAt": "2026-09-21T15:45:00Z",
          "evidenceRef": "synthetic:merchant-export-20260921-1545",
          "items": [
            {
              "item_id": "MUG-350-BLUE",
              "price": "18.00 USD",
              "sale_price": null,
              "availability": "out_of_stock"
            },
            {
              "item_id": "MUG-350-WHITE",
              "price": "18.00 USD",
              "sale_price": null,
              "availability": "in_stock"
            }
          ]
        },
        "feed": {
          "capturedAt": "2026-09-21T15:30:00Z",
          "evidenceRef": "synthetic:feed-export-20260921-1530",
          "items": [
            {
              "item_id": "MUG-350-WHITE",
              "price": "18.00 USD",
              "sale_price": null,
              "availability": "in_stock"
            },
            {
              "item_id": "MUG-350-BLUE",
              "price": "18.00 USD",
              "sale_price": null,
              "availability": "in_stock"
            }
          ]
        }
      },
      "expectedStatus": "update_needed"
    },
    {
      "id": "source-timestamp-conflict",
      "label": "The source predates a conflicting feed",
      "reason": "Both snapshots fall inside the selected age threshold, but the supplied authority is older than the disagreeing feed. Resolve chronology before proposing a replacement.",
      "input": {
        "schemaVersion": "1.0",
        "profile": "openai-native-stable",
        "asOf": "2026-09-21T16:00:00Z",
        "maxAgeHours": 24,
        "source": {
          "capturedAt": "2026-09-21T14:30:00Z",
          "evidenceRef": "synthetic:merchant-export-20260921-1430",
          "items": [
            {
              "item_id": "MUG-350-BLUE",
              "price": "18.00 USD",
              "sale_price": "14.00 USD",
              "availability": "in_stock"
            }
          ]
        },
        "feed": {
          "capturedAt": "2026-09-21T15:30:00Z",
          "evidenceRef": "synthetic:feed-export-20260921-1530",
          "items": [
            {
              "item_id": "MUG-350-BLUE",
              "price": "18.00 USD",
              "sale_price": null,
              "availability": "in_stock"
            }
          ]
        }
      },
      "expectedStatus": "hold"
    }
  ]
}