`dsh-global-tool-mask` wrapped `tools.restrict()` as a composition row so a
preset's user patch layer could hide a host tool. No shipped preset, the
plugin manager, and the settings UI compose such a row, so the package had a
README, a test, and no consumer. It goes, with its `apps/cli` dependency,
its `tsconfig.host.json` reference, the README example that named it, and the
generated catalogs. `tools.restrict()` stays: subagent tool filters call it.
Hiding a host tool from one preset is a per-preset setting for the
scope-resolved settings of the next layer, not a hand-written row; the Agent
Note records the removal under alternatives considered.
Yichen Jiang
42764971ca