feat: display messages as terminal output

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

tests/test_cli_helpers.py

@@ -1,4 +1,4 @@
-from tamq.cli import ensure_manual_service, parse_size
+from tamq.cli import ensure_manual_service, ensure_output_service, parse_size
 
 
 def test_parse_size():
@@ -22,3 +22,23 @@ def test_manual_service_restarts_legacy_broker(monkeypatch):
     assert ensure_manual_service() is True
     assert len(starts) == 2
     assert stops == [True]
+
+
+def test_output_service_requires_terminal_output_capability(monkeypatch):
+    capabilities = iter([
+        ["manual_delivery"],
+        ["manual_delivery", "terminal_output"],
+    ])
+    starts = []
+    stops = []
+
+    async def request(payload):
+        return {"capabilities": next(capabilities)}
+
+    monkeypatch.setattr("tamq.cli.ensure_service", lambda: starts.append(True) or True)
+    monkeypatch.setattr("tamq.cli.stop_service_process", lambda: stops.append(True) or 42)
+    monkeypatch.setattr("tamq.cli.request", request)
+
+    assert ensure_output_service() is True
+    assert len(starts) == 2
+    assert stops == [True]