{
  "kind": "illustrative-compatibility-matrix",
  "cases": [
    {
      "input": "missing optional value",
      "check": "missing and null are compared explicitly"
    },
    {
      "input": "unordered collection",
      "check": "sort only where the contract says order has no meaning"
    },
    {
      "input": "decimal result",
      "check": "agree a tolerance before comparison"
    },
    {
      "input": "dependency timeout",
      "check": "preserve documented error semantics"
    },
    {
      "input": "write followed by rollback",
      "check": "verify data recovery independently of traffic routing"
    }
  ],
  "releaseGates": [
    "representative comparison accepted",
    "known differences approved",
    "traffic rollback rehearsed",
    "data recovery plan reviewed"
  ],
  "scope": "Public reference example. Not a client artifact or proof of deployment."
}