{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://boss-skill.local/schema/knowledge-record-schema.json",
  "title": "Boss Knowledge Record",
  "type": "object",
  "required": [
    "id",
    "scope",
    "kind",
    "category",
    "subject",
    "summary",
    "source",
    "evidence",
    "confidence",
    "createdAt",
    "lastSeenAt",
    "expiresAt",
    "decayScore"
  ],
  "properties": {
    "id": { "type": "string" },
    "scope": { "type": "string", "enum": ["project", "global"] },
    "kind": { "type": "string", "enum": ["preference", "fact", "decision", "lesson"] },
    "category": { "type": "string" },
    "subject": { "type": "string" },
    "summary": { "type": "string" },
    "source": {
      "type": "object",
      "required": ["type"],
      "properties": {
        "type": { "type": "string" },
        "ref": { "type": ["string", "null"] }
      },
      "additionalProperties": true
    },
    "evidence": {
      "type": "array",
      "items": {
        "type": "object",
        "required": ["type", "ref"],
        "properties": {
          "type": { "type": "string" },
          "ref": { "type": "string" }
        },
        "additionalProperties": true
      }
    },
    "confidence": { "type": "number", "minimum": 0, "maximum": 1 },
    "createdAt": { "type": "string" },
    "lastSeenAt": { "type": "string" },
    "expiresAt": { "type": ["string", "null"] },
    "decayScore": { "type": "number", "minimum": 0 }
  },
  "additionalProperties": true
}