fix: restore interactive PTY behavior

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

tests/test_install_target.py

@@ -161,6 +161,63 @@ def test_isolated_installed_tool_session_smoke(tmp_path):
         assert status["service"] is True
         assert [item["endpoint_id"] for item in status["endpoints"]] == [started["instance_id"]]
         assert run(str(tamq), "stop").returncode == 0
+        assert json.loads(run(str(tamq), "status").stdout)["service"] is False
+
+        restarted = json.loads(
+            run(
+                str(tamq),
+                "start",
+                "--detach",
+                "--command",
+                "alpha-agent",
+                "railiance-platform",
+                "activity-core",
+            ).stdout
+        )
+        assert restarted["instance_id"] == started["instance_id"]
+        assert run(
+            *tmux,
+            "list-windows",
+            "-t",
+            "tamq",
+            "-F",
+            "#{window_name}|#{pane_current_path}|#{pane_pid}",
+        ).stdout.splitlines() == rows
+
+        run(*tmux, "kill-session", "-t", "tamq")
+        deadline = time.monotonic() + 5
+        while time.monotonic() < deadline:
+            status = json.loads(run(str(tamq), "status").stdout)
+            if status["endpoints"] == []:
+                break
+            time.sleep(0.05)
+        assert status["endpoints"] == []
+
+        recovered = json.loads(
+            run(
+                str(tamq),
+                "start",
+                "--detach",
+                "--command",
+                "alpha-agent",
+                "railiance-platform",
+                "activity-core",
+            ).stdout
+        )
+        assert recovered["instance_id"] != started["instance_id"]
+        recovered_rows = run(
+            *tmux,
+            "list-windows",
+            "-t",
+            "tamq",
+            "-F",
+            "#{window_name}|#{pane_current_path}",
+        ).stdout.splitlines()
+        assert recovered_rows == [
+            f"railiance-platform|{repo_a}",
+            f"activity-core|{repo_b}",
+        ]
+        assert run(str(tamq), "stop").returncode == 0
     finally:
         subprocess.run(
             [str(tamq), "stop"],