{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://cangjie-skill.org/schemas/failure-case.schema.json",
  "title": "Cangjie Repair Failure Case",
  "description": "repair 的最小输入（方案 §7.1）。用失败案例驱动，而不是「帮我润色一下」。",
  "type": "object",
  "required": ["schema_version", "skill", "failure_case"],
  "properties": {
    "schema_version": { "const": 1 },
    "skill": { "type": "string", "description": "目标 skill slug 或 capability_id" },
    "failure_case": {
      "type": "object",
      "required": ["prompt", "actual", "expected", "severity"],
      "properties": {
        "prompt": { "type": "string", "description": "用户真实输入" },
        "actual": { "type": "string", "description": "当前实际输出或执行轨迹；宿主拿不到 Trace 时记 unavailable" },
        "expected": { "type": "string", "description": "希望发生什么" },
        "severity": { "enum": ["critical", "major", "minor"] },
        "attachments": { "type": "array", "items": { "type": "string" }, "default": [] }
      }
    },
    "diagnosis": {
      "type": "object",
      "description": "诊断结果（由 Agent 填写，CLI 校验）",
      "properties": {
        "category": { "enum": ["activation_miss", "false_activation", "knowledge_gap", "execution_gap", "boundary_gap", "structure_gap", "tool_gap", "preprocessing_gap", "eval_gap"] },
        "evidence": { "type": "string" },
        "planned_changes": { "type": "array", "items": { "type": "string" } }
      }
    }
  }
}