feat(F-154): completed feature

work/artifacts/F-154/leader-close.json

@@ -0,0 +1,13 @@
+{
+  "feature_id": "F-154",
+  "agent": "leader",
+  "stage": "close",
+  "verdict": "APPROVED",
+  "summary": "F-154 completed: Customers (/users) now customer-only and Users (/admin/users) internal-only — backend-enforced role separation, frontend dropdown cleaned. 6 new unit tests + itest flip; full suite green; tsc/lint/verifysh clean.",
+  "checks": [
+    {"item": "Gates approved", "ok": true, "evidence": "reviewer.json, security.json, qa.json -> APPROVED"},
+    {"item": "verify.sh", "ok": true, "evidence": "exit 0"},
+    {"item": "Artifacts present", "ok": true, "evidence": "architect.md, implementer.md, reviewer.json, security.json, qa.json, documenter.md, leader-close.json"}
+  ],
+  "issues": []
+}