{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Multi-agent Shared Context",
  "type": "object",
  "required": ["schema_version", "generated_at", "prefix_epoch", "system", "rules", "l0", "l1", "selected_l2"],
  "properties": {
    "schema_version": { "type": "string", "const": "1.0" },
    "generated_at": { "type": "string", "format": "date-time" },
    "prefix_epoch": {
      "type": "integer",
      "minimum": 0,
      "description": "前缀缓存版本号（对应 cache-config.yml 的 cache_version）。sub-agent 启动时应校验与自身期望一致，避免用旧共享上下文。"
    },
    "task_id": { "type": "string", "minLength": 1 },
    "system": {
      "type": "object",
      "properties": {
        "tokens_estimate": { "type": "integer", "minimum": 0 }
      },
      "additionalProperties": true
    },
    "rules": {
      "type": "array",
      "items": { "type": "string" },
      "description": "分级后的强制规则 URI 列表（来自 rule-tier 的 L0 区）。"
    },
    "l0": {
      "type": "array",
      "items": { "type": "object" },
      "description": "L0 摘要块（~100 tokens/条）。"
    },
    "l1": {
      "type": "array",
      "items": { "type": "object" },
      "description": "L1 概览块（~2k tokens/条）。"
    },
    "selected_l2": {
      "type": "array",
      "items": { "type": "string" },
      "description": "选中的 L2 引用 URI（按需注入，不在共享上下文内联正文）。"
    },
    "estimated_tokens": { "type": "integer", "minimum": 0 }
  },
  "additionalProperties": false
}