把尚有关键取舍的功能或系统想法收敛为设计。用于用户要求讨论方案或需求尚未明确时；不用于 bug 修复、配置修改或照已有方案实现。
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See how to installReview the instructions the agent will receive before you install.
把尚未明确的目标、约束和关键取舍收敛成足以指导实现的设计。沿用用户已有的决定，不重新审批已认可的方案。
先读取与当前设计有关的代码和文档，能查到的事实不问用户。只有历史决定影响当前取舍时才追溯提交。
聚焦目的、约束和成功标准，优先问最影响设计的一个问题。存在真实替代方案时比较权衡并给出推荐；路径明确时不为凑数提供多个方案。
设计深度随复杂度伸缩：简单工具可以是几句话；复杂系统说明相关的边界、数据流、失败处理和验证方式。多个子系统需要分阶段时，说明依赖与构建顺序，不擅自把用户要求的完整交付缩成第一个子项目。
需要持久规格时写入 docs/specs/YYYY-MM-DD-<主题>-design.md，优先使用用户指定的位置。短小、一次性的设计可以直接在回复中给出，不强制创建文件。只在用户明确要求时创建 Git commit。
交付前消除会影响实施的缺口、矛盾和歧义。复杂规格可用 spec-document-reviewer-prompt.md 做审阅；只有已获授权且当前环境支持时才委派独立审阅。
保留能解释设计的约束和取舍，避免未请求的功能、抽象或顺手重构。
仅在布局、线框图或空间关系更适合视觉讨论时提出使用浏览器伴侣。用户同意后再读 visual-companion.md 并启动；拒绝则继续纯文本。话题涉及 UI 本身不构成启动理由。
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Delegate a task to the Claude Code CLI, typically a headless `claude -p` run. Use when the user wants the work executed through Claude Code rather than answered inline.
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Simplify existing code for clarity and maintainability without changing behavior. Use when asked to clean up or simplify code, especially recent changes.
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用 Codex CLI 子任务完成多来源深度调研并综合成带出处的报告。用于确实需要分头取证的研究，不用于单次查证或已给定材料的总结。
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Investigate or fix a GitHub issue by number or URL. Keep investigation-only requests read-only.
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Review a GitHub pull request by number or URL for evidence-backed defects. Not for reviewing local uncommitted changes.
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Generate or edit images when the user names OpenAI, GPT Image, or a gpt-image model. Use the default image skill when no provider is named.
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