{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$schema_name": "event",
  "$schema_version": "1.3.0",
  "title": "Noesis event record",
  "description": "Canonical schema for a single line in events.jsonl.",
  "type": "object",
  "additionalProperties": true,
  "required": [
    "id",
    "timestamp",
    "episode_id",
    "phase",
    "payload",
    "evidence_ids"
  ],
  "properties": {
    "id": { "type": "string" },
    "timestamp": { "type": "string", "format": "date-time" },
    "episode_id": { "type": "string" },
    "agent_id": { "type": "string" },
    "phase": { "type": "string" },
    "faculty": {
      "type": "string",
      "enum": ["intuition", "direction", "governance", "insight"]
    },
    "payload": { "type": "object" },
    "evidence_ids": { "type": "array", "items": { "type": "string" } },
    "caused_by": { "type": "string" },
    "metrics": {
      "type": "object",
      "additionalProperties": true,
      "required": ["started_at", "completed_at", "duration_ms"],
      "properties": {
        "started_at": { "type": "string", "format": "date-time" },
        "completed_at": { "type": "string", "format": "date-time" },
        "duration_ms": { "type": "number", "minimum": 0 }
      }
    }
  },
  "allOf": [
    {
      "if": {
        "properties": {
          "phase": { "const": "learn" }
        }
      },
      "then": {
        "properties": {
          "payload": {
            "oneOf": [
              {
                "type": "object",
                "additionalProperties": true,
                "description": "Design A learn reference payload (learn.jsonl pointer).",
                "required": ["learn_path", "learn_schema", "proposal_count", "proposal_ids"],
                "properties": {
                  "learn_path": { "type": "string" },
                  "learn_schema": { "type": "string" },
                  "proposal_count": { "type": "integer", "minimum": 0 },
                  "proposal_ids": { "type": "array", "items": { "type": "string" } },
                  "applied": { "type": "boolean" },
                  "applied_count": { "type": "integer", "minimum": 0 }
                }
              },
              {
                "type": "object",
                "additionalProperties": true,
                "description": "Legacy learn payload (inline proposal data).",
                "required": ["policy_id", "basis", "proposal", "scope"],
                "properties": {
                  "policy_id": { "type": "string" },
                  "basis": { "type": ["object", "array", "string"] },
                  "proposal": { "type": "array" },
                  "scope": { "type": "string" }
                }
              }
            ]
          }
        }
      }
    },
    {
      "if": {
        "properties": {
          "phase": { "const": "action_candidate" }
        }
      },
      "then": {
        "properties": {
          "payload": {
            "type": "object",
            "additionalProperties": true,
            "required": [
              "schema_version",
              "action_candidate_id",
              "kind",
              "payload",
              "state_ref",
              "state_hash",
              "redaction"
            ],
            "properties": {
              "schema_version": { "type": "string" },
              "action_candidate_id": { "type": ["string", "null"] },
              "kind": { "type": "string" },
              "payload": { "type": "object" },
              "state_ref": { "type": "string" },
              "state_hash": { "type": "string" },
              "redaction": { "type": "object" },
              "provenance": { "type": "object" },
              "risk_tags": { "type": "array", "items": { "type": "string" } }
            }
          }
        }
      }
    },
    {
      "if": {
        "properties": {
          "phase": { "const": "act" }
        }
      },
      "then": {
        "properties": {
          "payload": {
            "type": "object",
            "additionalProperties": true,
            "required": ["input_excerpt", "outcome"],
            "properties": {
              "action_id": { "type": "string" },
              "kind": { "type": "string" },
              "input_excerpt": { "type": "string" },
              "outcome": { "type": "string" },
              "result_status": { "type": "string" },
              "tool": { "type": "string" },
              "adapter": { "type": "string" },
              "action_candidate_id": { "type": "string" },
              "step_id": { "type": "string" },
              "step_status": { "type": "string" },
              "provenance": { "type": "object" },
              "result_artifacts": {
                "type": "array",
                "items": { "type": "object" }
              }
            }
          }
        }
      }
    }
  ]
}