risk-buffer-calculator

Productivity

计算每Phase风险缓冲百分比，基于复杂度、依赖和未知因素进行启发式分析。当需要风险评估、缓冲时间规划、资源预留时使用。主要用于L3项目的严格风险管理。

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Risk Buffer Calculator

Scope: EXECSPEC_COMPILE — Compile ExecSpec（编译 ExecSpec）版本: 1.0.0 | 创建日期: 2025-02-03

1. 描述

计算每Phase的风险缓冲百分比，为项目时长预估提供风险储备。

核心职责：计算风险缓冲百分比、基于复杂度和依赖因子、推荐缓冲分配策略

2. 适用场景

WORKFLOW Step 3 Task 3-8: Phase规划时计算风险缓冲
场景A: L3项目需要严格风险管理
场景B: 高依赖项目需要缓冲时间

对应: Build_Exec_Spec_Plans Step 4 (Phase规划，风险缓冲)

3. 输入

spec/build/dependency_graph.md - 依赖分析
spec/spec_artifacts_registry.md - 从Registry查询VS数量
spec/build/scaffold_analysis_report.md - 外部服务依赖

4. 输出

spec/build/risk_buffer_allocation.md - 风险缓冲分配

5. 执行步骤

Read dependency_graph.md, count external API dependencies
Read spec_artifacts_registry.md, query VS count from DESIGN section
Calculate complexity_factor:
- VS_Count > 10 → +5%, >20 → +10%
Calculate dependency_factor:
- External_APIs > 3 → +5%, >5 → +10%
Calculate buffer% = Base(10%) + complexity_factor + dependency_factor
Adjust by SPEC level:
- L1: 固定10%
- L2: 10-15% (简单计算)
- L3: 15-25% (综合分析)
Write risk_buffer_allocation.md

6. 快速开始

开发者确保dependency_graph.md已生成
调用: ///risk-buffer-calculator（并明确 Level: L3）
查看: spec/build/risk_buffer_allocation.md
预计耗时: 2-3分钟

7. 使用说明

输入要求: dependency_graph.md需包含外部依赖标注

输出格式 (spec/build/risk_buffer_allocation.md包含):

每Phase计算: 基础缓冲(10%) + 复杂度因子 + 依赖因子 = 总缓冲百分比
建议预留时间: 基于Phase预估时长计算具体小时数
L1固定: L1级别统一10%，不进行复杂计算

8. 价值

SPEC组织: 科学化风险预估
PM/BA: 真实项目周期预估
Dev: 缓冲时间指导

9. 质量检查

缓冲百分比在合理范围（10-25%）
每个Phase有单独计算
建议预留时间已提供

10. 限制条件

启发式: 基于简单规则，不是精确模型
L1固定: L1级别固定10%，不进行复杂计算