diff --git a/test/helpers/docsync-observer.ts b/test/helpers/docsync-observer.ts
index d4bc1f4d6..1da2d3693 100644
--- a/test/helpers/docsync-observer.ts
+++ b/test/helpers/docsync-observer.ts
@@ -223,7 +223,7 @@ export function docsCommandAllowed(command: string, fixture: ReturnType<typeof f
 
 export function docsNativeInterface(fixture: Pick<ReturnType<typeof fixtureDocs>, 'home' | 'repo' | 'skills'>, scripts: string[] = [], transport = false): string {
   const skills = fixture.skills.split(path.sep).join('/');
-  return `Fixture observation interface (applies to parent and every child; include this interface in child prompts): Bash may execute only separate literal pwd, ls, cat, stat, sha256sum, Git read commands (status, diff, show, log, ls-files, rev-parse, merge-base, hash-object without -w, branch --show-current), the exact generated Preamble block with its spawned prefix, or literal installed gstack-skill-start/gstack-skill-end commands for document-release (start requires GSTACK_SESSION_KIND=spawned). No shell composition, custom interpreters, arbitrary scripts, inline eval or memory-mapped writes. The only additional scripts are ${scripts.length ? scripts.join(', ') : 'none'}. Read/Glob/Grep remain available. Use Write/Edit for permitted docs and private JSON/Markdown artifacts under ${fixture.home}; do not rewrite installed skills, config, actor state or scripts. No effects outside the owned fixture. The owner preserves evidence and cleans up. Missing observer coverage blocks acceptance; the Linux kernel monitor covers syscall writes in the product tree, not hostile processes or arbitrary external destinations.
+  return `Fixture observation interface (applies to parent and every child; include this interface in child prompts): Bash may execute only separate literal pwd, ls, cat, stat, sha256sum, Git read commands (status, diff, show, log, ls-files, rev-parse, merge-base, hash-object without -w, branch --show-current), the exact generated Preamble block with its spawned prefix, or literal installed gstack-skill-start/gstack-skill-end commands for document-release (start requires GSTACK_SESSION_KIND=spawned). No shell composition, custom interpreters, arbitrary scripts, inline eval or memory-mapped writes. The only additional scripts are ${scripts.length ? scripts.join(', ') : 'none'}. Read/Glob/Grep remain available; Read skill and section files with Read (offset/limit for ranges), because Bash output over 30KB becomes a preview that no permitted Bash command can page. Use Write/Edit for permitted docs and private JSON/Markdown artifacts under ${fixture.home}; do not rewrite installed skills, config, actor state or scripts. No effects outside the owned fixture. The owner preserves evidence and cleans up. Missing observer coverage blocks acceptance; the Linux kernel monitor covers syscall writes in the product tree, not hostile processes or arbitrary external destinations.
 
 The working directory for parent and child Bash calls is already ${fixture.repo}. Run Git reads directly, for example: git status, git diff --cached, git merge-base main HEAD, git rev-parse HEAD. Do not use Git global options such as -C, -c, --git-dir or --work-tree, and do not prepend cd or another shell wrapper. The literal git subcommand must immediately follow git; an absolute owned repository path does not make git -C an allowed command.