Keep MQTT command persistence in common prefs

test/test_cli_settings_contract.py

@@ -63,6 +63,7 @@ COMMON_QUERY_EXCEPTIONS = {
 }
 OBSERVER_QUERY_EXCEPTIONS = {
     'mqtt.config.valid': 'Configuration validation result',
+    'mqtt.enabled': 'Stored in common NodePrefs; set mqtt.enabled is handled by CommonCLI',
     'mqtt.ntp.diag': 'NTP diagnostics',
     'mqtt.presets': 'List of available presets',
     'mqtt.running': 'Live state; set mqtt.enabled controls intent',

test/test_espnow_radio_lifecycle.py

@@ -120,7 +120,7 @@ class EspNowLifecycleTests(unittest.TestCase):
         self.assertIn('uint8_t espnow_bridge_enabled = 1;', prefs)
         self.assertIn('setEspNowBridgeState(enable)', common)
         self.assertIn('_prefs->espnow_bridge_enabled', common)
-        self.assertIn('setMqttBridgeState(enable)', observer)
+        self.assertIn('setMqttBridgeState(enable)', common)
         self.assertIn('isMqttBridgeRunning()', observer)
         for role in ('simple_repeater', 'simple_room_server'):
             header = (ROOT/f'examples/{role}/MyMesh.h').read_text()