Add cancellation support to an existing order service.

{
  "schemaVersion": 1,
  "id": "example-cancellation",
  "kind": "example",
  "task": "Add cancellation support to an existing order service.",
  "agent": "backend-engineer",
  "profile": "java-spring",
  "status": "completed",
  "durationSeconds": 612,
  "retries": 1,
  "tools": [
    "codebase",
    "docs",
    "github"
  ],
  "filesRead": [
    "src/main/java/com/example/order/OrderService.java",
    "src/main/java/com/example/order/OrderStatus.java",
    "docs/architecture.md"
  ],
  "filesChanged": [
    "src/main/java/com/example/order/OrderService.java",
    "src/test/java/com/example/order/OrderServiceCancellationTest.java"
  ],
  "gates": [
    {
      "stage": "build",
      "outcome": "passed"
    },
    {
      "stage": "unit_tests",
      "outcome": "passed"
    },
    {
      "stage": "integration_tests",
      "outcome": "unavailable"
    },
    {
      "stage": "review",
      "outcome": "unrun"
    },
    {
      "stage": "eval",
      "outcome": "unrun"
    },
    {
      "stage": "human_approval",
      "outcome": "unrun"
    }
  ],
  "notes": [
    "Example record. This illustrative run was never executed.",
    "Every value here is illustrative and must be labelled as an example wherever it is displayed.",
    "Integration tests are shown as unavailable rather than passed, because the profile supplies no command for them.",
    "Token and cost measurements are omitted rather than set to zero, because nothing was measured."
  ]
}