{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://schemas.kxm.dev/candidate.schema.json",
  "title": "KXM coded-repeat improvement candidate",
  "type": "object",
  "required": [
    "schema",
    "id",
    "kind",
    "summary",
    "evidenceRefs",
    "baselineMetrics",
    "declaredOutcome",
    "measure",
    "proposedDiffPath",
    "status",
    "createdAt"
  ],
  "properties": {
    "schema": {
      "const": "kxm.candidate.v1"
    },
    "id": {
      "$ref": "common.schema.json#/$defs/opaqueId"
    },
    "kind": {
      "enum": [
        "gate",
        "skill",
        "workflow-step"
      ]
    },
    "summary": {
      "type": "string",
      "minLength": 1,
      "maxLength": 2000
    },
    "evidenceRefs": {
      "type": "array",
      "items": {
        "type": "string",
        "minLength": 1,
        "maxLength": 256
      },
      "minItems": 1,
      "maxItems": 64
    },
    "baselineMetrics": {
      "type": "object",
      "required": [
        "recurrence",
        "meanCost",
        "meanLatency",
        "verifyPassRate",
        "rework"
      ],
      "properties": {
        "recurrence": {
          "type": "integer",
          "minimum": 1
        },
        "meanCost": {
          "type": "number",
          "minimum": 0
        },
        "meanLatency": {
          "type": "number",
          "minimum": 0
        },
        "verifyPassRate": {
          "type": "number",
          "minimum": 0,
          "maximum": 1
        },
        "rework": {
          "type": "integer",
          "minimum": 0
        }
      },
      "additionalProperties": false
    },
    "declaredOutcome": {
      "type": "string",
      "minLength": 1,
      "maxLength": 2000
    },
    "measure": {
      "type": "string",
      "minLength": 1,
      "maxLength": 2000
    },
    "proposedDiffPath": {
      "$ref": "common.schema.json#/$defs/relativePath"
    },
    "status": {
      "enum": [
        "proposed",
        "evaluating",
        "review-required",
        "promoted",
        "rejected"
      ]
    },
    "createdAt": {
      "$ref": "common.schema.json#/$defs/timestamp"
    }
  },
  "additionalProperties": false
}