`structural-number-published-date`

source publication date sent as a JSON number, which only `type` refuses

structural invalid

Layer: structural
Expected result: invalid
Expected diagnostic: JPS-STRUCTURE-TYPE at /sources/0/publishedAt
Specification: §6.3

The expected result is conformance-corpus metadata, not a claim about factual grounding, authority, safety, or operational fitness.

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Exact fixture

{
  "specVersion": "0.2.0-draft",
  "id": "https://example.com/judgment-packs/number-published-date",
  "version": "0.1.0",
  "title": "Source publication date as a JSON number",
  "decision": {
    "intent": "Exercise publication-date type validation.",
    "question": "Is a JSON number rejected where a formatted date is required?"
  },
  "sources": [
    {
      "id": "policy",
      "title": "Example policy",
      "publishedAt": 20260115,
      "locator": { "kind": "uri", "value": "https://example.com/policy" }
    }
  ],
  "outcomes": [
    { "id": "accept", "label": "Accept" },
    { "id": "reject", "label": "Reject" }
  ],
  "rules": [
    {
      "id": "literal-rule",
      "description": "A structurally minimal rule.",
      "when": { "op": "literal", "value": true },
      "outcome": "accept",
      "onUnknown": "ignore"
    }
  ]
}