jsonl contract audit derived

{
  "input": {
    "body": {
      "jsonl": "{\"event\":\"signup\",\"user_id\":\"u1\",\"ts\":\"2026-10-01T00:00:00Z\"}\n{\"event\":\"signup\",\"user_id\":17,\"ts\":\"2026-10-01T00:00:01Z\"}\n{\"event\":\"unknown\",\"user_id\":\"u3\"}\nnot json at all\n",
      "schema": {
        "type": "object",
        "required": [
          "event",
          "user_id",
          "ts"
        ],
        "properties": {
          "ts": {
            "type": "string",
            "format": "date-time"
          },
          "event": {
            "enum": [
              "signup",
              "login"
            ],
            "type": "string"
          },
          "user_id": {
            "type": "string"
          }
        }
      }
    },
    "type": "http",
    "method": "POST",
    "bodyType": "json"
  },
  "output": {
    "type": "json",
    "example": {
      "valid": false,
      "limits": {
        "maxLines": 2000,
        "maxHeaders": 100,
        "maxFindings": 500,
        "maxPointers": 2000,
        "maxTextBytes": 262144,
        "maxBatchItems": 500,
        "maxDocumentBytes": 262144
      },
      "passed": false,
      "complete": true,
      "findings": [
        {
          "code": "TYPE_MISMATCH",
          "line": 2,
          "detail": "Line 2: Expected string, found integer.",
          "pointer": "/user_id"
        },
        {
          "code": "REQUIRED_PROPERTY_MISSING",
          "line": 3,
          "detail": "Line 3: Required property ts is absent.",
          "pointer": "/ts"
        },
        {
          "code": "NOT_IN_ENUM",
          "line": 3,
          "detail": "Line 3: \"unknown\" is not one of the 2 permitted values.",
          "pointer": "/event"
        }
      ],
      "line_count": 4,
      "request_id": "example-request",
      "service_id": "jsonl_contract_audit",
      "assumptions": [
        "One JSON value per line. A trailing newline is not a record; a blank line between records is reported, because it is almost always a producer bug.",
        "Line numbers are 1-based and count every line of the input, so they match a text editor."
      ],
      "limitations": [
        "Conformance against the supplied schema only, line by line. Relationships between lines are not assessed.",
        "valid is true only when every line was audited and every declared constraint was evaluated."
      ],
      "observed_at": "2026-10-02T00:00:00.000Z",
      "not_examined": [],
      "finding_count": 4,
      "service_version": "1.0.0",
      "findings_by_code": {
        "NOT_IN_ENUM": 1,
        "LINE_NOT_JSON": 1,
        "TYPE_MISMATCH": 1,
        "REQUIRED_PROPERTY_MISSING": 1
      },
      "valid_line_count": 1,
      "audited_line_count": 4,
      "first_failing_line": 2,
      "invalid_line_count": 2,
      "unparseable_line_count": 1
    }
  }
}