{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "title": "Context Freshness Ledger Case",
  "description": "A synthetic no-execution record for reviewing whether remembered context is current enough for a proposed action.",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "record_id",
    "source",
    "scope",
    "proposed_action",
    "freshness",
    "human_return"
  ],
  "properties": {
    "record_id": {"type": "string", "minLength": 1},
    "source": {
      "type": "object",
      "additionalProperties": false,
      "required": ["kind", "reference", "observed_at"],
      "properties": {
        "kind": {"type": "string", "enum": ["session", "document", "tool_result", "person", "other"]},
        "reference": {"type": "string", "minLength": 1},
        "observed_at": {"type": "string", "format": "date-time"}
      }
    },
    "scope": {"type": "string", "minLength": 1},
    "proposed_action": {"type": "string", "minLength": 1},
    "freshness": {
      "type": "object",
      "additionalProperties": false,
      "required": ["review_by", "status", "reason"],
      "properties": {
        "review_by": {"type": "string", "format": "date-time"},
        "status": {"type": "string", "enum": ["current", "stale", "needs_review"]},
        "reason": {"type": "string", "minLength": 1}
      }
    },
    "human_return": {
      "type": "object",
      "additionalProperties": false,
      "required": ["required", "reason"],
      "properties": {
        "required": {"type": "boolean"},
        "reason": {"type": "string", "minLength": 1}
      }
    }
  }
}