{
  "$id": "learnings.v1",
  "title": "Learnings store (knowledge/learnings.json)",
  "type": "object",
  "required": ["version", "learnings"],
  "properties": {
    "version": { "type": "integer", "minimum": 1 },
    "learnings": {
      "type": "array",
      "items": {
        "type": "object",
        "required": ["fingerprint", "pattern", "outcome", "occurrence", "first_seen", "last_seen"],
        "properties": {
          "fingerprint": { "type": "string", "pattern": "^[a-f0-9]{16}$" },
          "pattern": { "type": "string", "maxBytes": 4096 },
          "outcome": { "type": "string", "maxBytes": 4096 },
          "occurrence": { "type": "integer", "minimum": 1 },
          "first_seen": { "type": "string" },
          "last_seen": { "type": "string" },
          "tokens": { "type": "array", "items": { "type": "string" } },
          "task_ids": { "type": "array", "items": { "type": "string" } },
          "milestone_ids": { "type": "array", "items": { "type": "string" } },
          "outcome_history": { "type": "array" }
        }
      }
    }
  }
}