diff --git a/test/skill-e2e-bws.test.ts b/test/skill-e2e-bws.test.ts
index 956174117..cf812e1fc 100644
--- a/test/skill-e2e-bws.test.ts
+++ b/test/skill-e2e-bws.test.ts
@@ -192,13 +192,21 @@ Report the exact output — either "READY: <path>" or "NEEDS_SETUP".`,
     run('git', ['add', '.']);
     run('git', ['commit', '-m', 'initial']);
 
-    // Copy bin scripts
+    // Copy bin scripts + the lib module they import. gstack-learnings-log
+    // does `import ... from '$SCRIPT_DIR/../lib/jsonl-store.ts'` (v1.57.5.0
+    // injection sanitization) — without lib/ alongside bin/, the script exits
+    // 1 before writing anything, failing this test for a fixture reason, not
+    // a model-behavior reason (root-caused during the v1.58.0.0 ship; fails
+    // identically on main).
     const binDir = path.join(opDir, 'bin');
     fs.mkdirSync(binDir, { recursive: true });
     for (const script of ['gstack-learnings-log', 'gstack-slug']) {
       fs.copyFileSync(path.join(ROOT, 'bin', script), path.join(binDir, script));
       fs.chmodSync(path.join(binDir, script), 0o755);
     }
+    const libDir = path.join(opDir, 'lib');
+    fs.mkdirSync(libDir, { recursive: true });
+    fs.copyFileSync(path.join(ROOT, 'lib', 'jsonl-store.ts'), path.join(libDir, 'jsonl-store.ts'));
 
     // gstack-learnings-log will create the project dir automatically via gstack-slug