core/.trellis/tasks/09-28-shared-toolchain/implement.jsonl

{"file":".trellis/spec/backend/toolchain-and-library.md","reason":"定义原生产物缓存、工具链边界和定向验证合同"}
{"file":".trellis/tasks/09-06-private-compiler-distribution/prd.md","reason":"约束本子任务不扩大到公开发行、内置后端和跨平台矩阵"}