project-analysis
项目分析技能
本技能是项目的深度分析层。
它不负责每次开发前后的通用 docs 编排；那由 project-docs-workflow 负责。它的职责是：在现有文档不足、链路复杂或用户明确需要时，做只读取证、调用链梳理、图表整理和性能观察，并把结果整理进项目文档。
默认行为：创建或更新 docs。 不再使用 analysis-only。当用户没有明确指定时，应优先判断是新建文档还是更新现有文档，并实际写入 docs/ 或调用方指定的长期文档落点。
强制要求：凡是输出 Mermaid 图表，必须在同一位置紧跟对应的 ASCII/TUI 预览图，方便用户在终端和代码评审中直接审查结构。不得省略，不得标记为可选。
分析主题
本技能可用于以下分析主题：
architecture：系统架构、模块边界、依赖关系、外部服务dataflow：模块数据流、调用链、关键数据变换、外部 I/Osequence：主流程时序、跨层交互、关键分支performance-risk：性能热点、放大点、瓶颈候选、风险链路
执行模式
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