fix: refresh lighthouse mirror only on public architecture change

server-tools/fifth-domain-lighthouse-mirror/test_public_mirror_agent.py

@@ -33,6 +33,8 @@ class MirrorAgentTest(unittest.TestCase):
             body = (Path(temp) / "architecture/CURRENT.json").read_text()
             self.assertNotIn("/Volumes/", body)
             self.assertNotIn("continuity-memory", body)
+            unchanged = M.sync_architecture(ROOT, Path(temp))
+            self.assertEqual(unchanged["state"], "MIRROR_PUBLIC_ARCHITECTURE_UNCHANGED")
 
     def test_no_persona_decision_no_candidate(self):
         with tempfile.TemporaryDirectory() as temp: