{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "spec-first verification evidence",
  "type": "object",
  "required": [
    "schema_version",
    "evidence_source",
    "evidence_items"
  ],
  "properties": {
    "schema_version": { "type": "string" },
    "evidence_source": { "type": "string" },
    "evidence_items": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "evidence_ref",
          "verifier",
          "gate_ids",
          "evidence_type",
          "status",
          "artifact_path",
          "captured_at",
          "stage"
        ],
        "properties": {
          "evidence_ref": { "type": "string" },
          "verifier": { "type": "string" },
          "gate_ids": {
            "type": "array",
            "items": { "type": "string" }
          },
          "evidence_type": { "type": "string" },
          "status": {
            "type": "string",
            "enum": ["captured", "failed"]
          },
          "artifact_path": { "type": ["string", "null"] },
          "captured_at": { "type": ["string", "null"] },
          "stage": {
            "type": "string",
            "enum": ["plan", "work", "review", "verify", "unknown"]
          }
        }
      }
    }
  }
}