Show device host:port on tree root row in live mode

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app_state.py

@@ -8,7 +8,7 @@ so later rebinding would only ever be seen by the module that did it.
 import configparser
 import os
 
-VERSION = "0.0.0.127"
+VERSION = "0.0.0.128"
 PROPERTIES_FILE = os.path.join(os.path.dirname(os.path.abspath(__file__)), "editor.properties")
 DEFAULT_GRID_SIZE = 10
 DEFAULT_ADD_TIMESTAMP = True

sax_file.py

@@ -63,7 +63,10 @@ def refresh_treeview_from_dom(xml_root):
             _tree_filled()
         return
 
-    file_name = os.path.basename(app_state.current_file_path)
+    if app_state.live_mode:
+        file_name = f"{app_state.device_host}:{app_state.device_port}"
+    else:
+        file_name = os.path.basename(app_state.current_file_path)
     # Inserted plain. refresh_dirty_display puts the unsaved tag on or off, and runs
     # after every rebuild, so a fresh row picks up the right state there.
     root_node = tree.insert("", "end", text=file_name, open=True)