fix: restore interactive PTY behavior

Assistant: codex
Assistant-Model: gpt-5.6-sol
Assistant-Session: 01a03397-4d51-7fd1-8ff2-946eb22ea2bc

tests/test_service_delivery.py

@@ -13,6 +13,9 @@ class FakeControl:
     def start(self):
         return None
 
+    def session_exists(self, expected_pid=None):
+        return True
+
     def inject(self, window, text):
         self.injected.append((window, text))
 
@@ -29,3 +32,17 @@ def test_service_delivery_injects_pending_messages(tmp_path, monkeypatch):
     assert FakeControl.instances[-1].injected == [("tamq:repo-b", "#repo-a: continue")]
     assert store.list()[0]["message_id"] == message_id
     assert store.list()[0]["state"] == "injected"
+
+
+def test_service_disconnects_disappeared_tmux_endpoint(tmp_path, monkeypatch):
+    store = Store(tmp_path / "queue.sqlite3")
+    store.register_endpoint("tmux-amq-9-boot", 9, "tamq", ["repo-b"])
+
+    class MissingControl(FakeControl):
+        def session_exists(self, expected_pid=None):
+            assert expected_pid == 9
+            return False
+
+    monkeypatch.setattr("tamq.service.ControlModeClient", MissingControl)
+    Service(store=store)._deliver_once()
+    assert store.endpoints() == []