Add log viewer functionality and enhance reconnect handling

- Introduced a log viewer in the UI to display live logs.
- Added functionality to load the last few lines of the log file.
- Enhanced reconnect logic to handle UI state during connection attempts.
- Updated UI state management to track log viewer status.
- Added tests for log loading functionality.

tests/test_interfaces.py

@@ -1,4 +1,5 @@
 from argparse import Namespace
+from types import SimpleNamespace
 import unittest
 from unittest import mock
 
@@ -9,13 +10,18 @@ class InterfacesTests(unittest.TestCase):
     def test_reconnect_interface_retries_until_connection_succeeds(self) -> None:
         args = Namespace()
 
-        with mock.patch("contact.utilities.interfaces.initialize_interface", side_effect=[None, None, "iface"]) as initialize:
+        ready_interface = SimpleNamespace(localNode=SimpleNamespace(localConfig=object(), nodeNum=123))
+        with mock.patch(
+            "contact.utilities.interfaces.initialize_interface", side_effect=[None, None, ready_interface]
+        ) as initialize:
             with mock.patch("contact.utilities.interfaces.time.sleep") as sleep:
-                result = reconnect_interface(args, attempts=3, delay_seconds=0.25)
+                with mock.patch("contact.utilities.interfaces.logging.info") as info:
+                    result = reconnect_interface(args, attempts=3, delay_seconds=0.25)
 
-        self.assertEqual(result, "iface")
+        self.assertIs(result, ready_interface)
         self.assertEqual(initialize.call_count, 3)
         self.assertEqual(sleep.call_count, 2)
+        self.assertTrue(any("Reconnected to Meshtastic node" in call.args[0] for call in info.call_args_list))
 
     def test_reconnect_interface_raises_after_exhausting_attempts(self) -> None:
         args = Namespace()