requirement-analysis

Model a requirement/system: extract goals, scope, roles, rules, exceptions, dependencies from PRD, docs, bugs, code; outputs a structured model with clarifications. Not for: writing cases, strategy decisions, the pipeline. 建模需求/系统：从 PRD、文档、Bug、代码提炼目标/范围/角色/规则/异常/依赖。不用于：直接写用例、策略、流水线。