{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://github.com/xiqin/loom/config/traceability.schema.json",
  "title": "loom Traceability Ledger",
  "description": "REQ -> behavior -> task/test/evidence 结构化追踪账本 schema。planning 写 task 映射，executing 补 tests/evidence，verification 校验闭环。",
  "version": 1,
  "type": "object",
  "required": ["requirements"],
  "additionalProperties": false,
  "properties": {
    "requirements": {
      "oneOf": [
        {
          "type": "array",
          "items": { "$ref": "#/definitions/traceabilityEntry" }
        },
        {
          "type": "object",
          "additionalProperties": { "$ref": "#/definitions/traceabilityEntryWithoutId" }
        }
      ]
    }
  },
  "definitions": {
    "traceabilityEntry": {
      "type": "object",
      "required": ["id", "tasks", "tests", "evidence"],
      "additionalProperties": false,
      "properties": {
        "id": { "type": "string", "pattern": "^REQ-\\d{3,}$" },
        "tasks": { "type": "array", "items": { "type": "string" } },
        "tests": { "type": "array", "items": { "type": "string" } },
        "evidence": { "type": "array", "items": { "type": "string" } },
        "behaviors": {
          "type": "object",
          "additionalProperties": { "$ref": "#/definitions/behaviorTraceability" }
        }
      }
    },
    "traceabilityEntryWithoutId": {
      "type": "object",
      "required": ["tasks", "tests", "evidence"],
      "additionalProperties": false,
      "properties": {
        "tasks": { "type": "array", "items": { "type": "string" } },
        "tests": { "type": "array", "items": { "type": "string" } },
        "evidence": { "type": "array", "items": { "type": "string" } },
        "behaviors": {
          "type": "object",
          "additionalProperties": { "$ref": "#/definitions/behaviorTraceability" }
        }
      }
    },
    "behaviorTraceability": {
      "type": "object",
      "required": ["tasks", "tests", "evidence"],
      "additionalProperties": false,
      "properties": {
        "tasks": { "type": "array", "items": { "type": "string" } },
        "tests": { "type": "array", "items": { "type": "string" } },
        "evidence": { "type": "array", "items": { "type": "string" } }
      }
    }
  }
}