{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://aps.local/contracts/session.schema.json",
  "title": "SessionSummary",
  "description": "会话概要（ADR-0003：个人会话只读，写操作必须在项目会话内）。",
  "$ref": "#/$defs/SessionSummary",
  "$defs": {
    "SessionSummary": {
      "type": "object",
      "required": ["sessionId", "scope", "status", "title", "createdAt"],
      "properties": {
        "sessionId": { "type": "string" },
        "projectId": { "type": ["string", "null"] },
        "scope": { "type": "string", "enum": ["personal", "project"] },
        "status": { "type": "string", "enum": ["active", "archived"] },
        "title": { "type": "string" },
        "createdAt": { "type": "integer" }
      },
      "additionalProperties": false
    }
  }
}