{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://buildchain.libkungfu.dev/schemas/v4-exception-ledger-v1.schema.json",
  "title": "Buildchain v4 Architecture Exception Ledger",
  "type": "object",
  "required": ["schemaVersion", "contract", "exceptions"],
  "additionalProperties": false,
  "properties": {
    "schemaVersion": { "const": 1 },
    "contract": {
      "const": "kungfu-buildchain-v4-architecture-exception-ledger"
    },
    "exceptions": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "id",
          "status",
          "owner",
          "budgetDimension",
          "scope",
          "rationale",
          "evidence",
          "expiresAt",
          "removalCondition"
        ],
        "additionalProperties": false,
        "properties": {
          "id": { "type": "string", "minLength": 1 },
          "status": { "enum": ["active", "closed"] },
          "owner": { "type": "string", "minLength": 1 },
          "budgetDimension": {
            "enum": [
              "authority",
              "semanticState",
              "boundary",
              "structural",
              "agentCognitive",
              "recoveryFault"
            ]
          },
          "scope": { "type": "string", "minLength": 1 },
          "rationale": { "type": "string", "minLength": 1 },
          "evidence": {
            "type": "array",
            "minItems": 1,
            "items": { "type": "string", "minLength": 1 }
          },
          "expiresAt": { "type": "string", "format": "date-time" },
          "removalCondition": { "type": "string", "minLength": 1 }
        }
      }
    }
  }
}