{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://github.com/xiqin/loom/config/model-selection.schema.json",
  "title": "loom Model Selection Strategy",
  "description": "模型选择策略定义 — 驱动 generate-model-selection.mjs 生成 SKILL.md 中的模型选择章节",
  "version": 1,
  "sectionTitle": "模型选择策略",
  "intro": "使用最强大的模型来处理每个角色，以节省成本并提高效率：",
  "tiers": [
    {
      "id": "mechanical",
      "label": "机械实现任务",
      "scope": "隔离函数、1-2 个文件、Requirement ID 与验收映射完整、上下文无 UNKNOWN",
      "model": "快速、便宜的模型",
      "rationale": "只有事实已落盘且不存在接口/安全判断时，才把任务视为机械实现"
    },
    {
      "id": "integration",
      "label": "集成和判断任务",
      "scope": "多文件协调、模式匹配、调试",
      "model": "标准模型"
    },
    {
      "id": "architecture",
      "label": "架构、设计和审查任务",
      "scope": null,
      "model": "可用的最强模型"
    }
  ],
  "signals": [
    { "condition": "触及 1-2 个文件、Requirement ID/验收映射完整、无 UNKNOWN、无公开接口或安全影响", "tier": "mechanical" },
    { "condition": "任一关键事实为 UNKNOWN、handoff 指纹过期或源码与 handoff 冲突", "tier": "integration" },
    { "condition": "触及多个文件且有集成问题", "tier": "integration" },
    { "condition": "需要设计判断或广泛的代码库理解", "tier": "architecture" }
  ]
}