zhou
9f50bb3e7c
CI / Lint, Typecheck & Test (push) Has been cancelled
新增 yaml_loader 模块支持 jobs/needs/strategy.matrix/if 条件/env/defaults 等 CI/CD 概念，
Graph.from_yaml classmethod 与 pf yamlrun CLI 命令；矩阵笛卡尔积展开与依赖自动展开，
${{ matrix.key }} 占位符替换，字段名 hyphen/underscore 兼容。