@qlheric

Keep DSH agents from stalling, fake-finishing, or overspending: 4 cognitive guards (task contract / loop detection / evidence-before-done / single injection point) + 1 cost guard (budget nudge). No core changes - official seams only.

dsh 的代码图谱：tree-sitter WASM 符号索引 + 仓库地图 + 每文件一行 F/R/A/S 认知层（零原生编译）

十个零依赖确定性工具，一个包给 dsh：json / calculator / encoding / diff / time / csv / regex / stat / markdown / schema