docs: preserve unrelated pnpm build policies

Author: chenjiahan

.agents/skills/migrate-to-rstack-cli/references/git-hooks.md

@@ -44,7 +44,7 @@ pnpm test
 2. Create one Rstack file per Git hook. Rstack runs it with POSIX `sh -e` and forwards arguments and standard input. Replace templates such as `{1}` with `"$1"`; move custom Lefthook groups to project scripts.
 3. Move `pre-commit` tasks using `{staged_files}`, `stage_fixed`, `glob`, or `exclude` to `define.staged`, and run `rs staged` from `.rstack/hooks/pre-commit`; it passes matched files and stages successful fixes. Recreate the intended file set instead of copying globs: Lefthook's default `**` semantics differ from lint-staged. Preserve exclusions such as unsupported symlinks.
 4. For `{push_files}`, `{all_files}`, custom `{files}`, or orchestration such as `parallel` and `piped`, call a project helper from the hook. It should consume all `pre-push` ref updates, apply the original conditions, preserve concurrency or ordering, and aggregate failures. For a configuration like Rstest's, run the format/spell check always, skip type checking only for Markdown-only pushes, and run the dependency check only for pushed package manifests. Do not substitute a fixed `HEAD^` diff.
-5. Replace `lefthook install` with `rs hooks` and `LEFTHOOK=0` with `RSTACK_HOOKS=0`. After validation, remove Lefthook configs, dependencies, generated hooks, and pnpm build metadata such as `allowBuilds`, `onlyBuiltDependencies`, or `ignoredBuiltDependencies`. Remove local-config ignore rules only when no longer needed.
+5. Replace `lefthook install` with `rs hooks` and `LEFTHOOK=0` with `RSTACK_HOOKS=0`. After validation, remove Lefthook configs, dependencies, generated hooks, and its entries from pnpm build metadata such as `allowBuilds`, `onlyBuiltDependencies`, or `ignoredBuiltDependencies`. Preserve unrelated entries, and remove a setting only if it becomes empty. Remove local-config ignore rules only when no longer needed.
 
 ## simple-git-hooks