crates/spt-daemon/tests/twohost.rs | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
diff --git a/crates/spt-daemon/tests/twohost.rs b/crates/spt-daemon/tests/twohost.rs
index 4d778a6..cf04644 100644
--- a/crates/spt-daemon/tests/twohost.rs
+++ b/crates/spt-daemon/tests/twohost.rs
@@ -873,6 +873,29 @@ fn two_host_ladder_role_b() {
     std::fs::write(xroot.join("sid.txt"), sid.to_string()).expect("write sid");
     println!("TWOHOST role B: drive session {sid} ready");
 
+    // NAMEPLATE's engine-room posture must be backed by broker truth, not only
+    // by a hand-written `controlled=true` stamp. A daemon liveness reconcile is
+    // entitled to clear that stamp when no session exists.
+    #[cfg(unix)]
+    let (er_program, er_args) = ("cat".to_string(), Vec::<String>::new());
+    #[cfg(windows)]
+    let (er_program, er_args) = ("findstr".to_string(), vec![".".to_string()]);
+    let er_sid = host_brain
+        .spawn_session(spt_daemon::msg::SpawnReq {
+            program: er_program,
+            args: er_args,
+            rows: 24,
+            cols: 80,
+            endpoint: spt_store::engineroom::ENGINE_ROOM_ID.to_string(),
+            cwd: None,
+            env: Default::default(),
+            translation_binary: None,
+            adapter: String::new(),
+            install_dir: None,
+        })
+        .expect("spawn NAMEPLATE engine-room controller session");
+    println!("TWOHOST role B: NAMEPLATE engine-room session {er_sid} ready");
+
     // ── Rung 1 — pair (responder): the PRODUCT surface (M7 D5). The
     // daemon-hosted ALWAYS-ON responder — the broker NetHost speaking the
     // pre-trust pairing ALPN beside the trusted surface (pairhost) — answers