Use manifest defaults when adding components and refresh properties from device

- Populate prop elements with manifest default values when adding
  components in both offline and live mode
- Send config values from manifest in SOX add command for live devices
- Refresh button in properties panel now fetches fresh values from
  the connected device before re-reading the DOM
- Properties panel fetches device values on open in live mode

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

main.py

@@ -11,6 +11,7 @@ import app_state
 import connect_dialog
 import device_session
 import link_view
+import live_hooks
 import manage_kits
 import palette
 import properties
@@ -191,7 +192,15 @@ def refresh_all_views():
 
 def _component_in_document(comp):
     root = app_state.xml_root_element
-    return root is not None and any(element is comp for element in root.iter())
+    if root is None:
+        return False
+    if any(element is comp for element in root.iter()):
+        return True
+    if app_state.live_mode:
+        comp_id = comp.get("id")
+        if comp_id is not None:
+            return any(e.get("id") == comp_id for e in root.iter())
+    return False
 
 
 def delete_component(comp):
@@ -1329,10 +1338,16 @@ def on_canvas_release(event):
             if orig_x != raw_x or orig_y != raw_y:
                 meta_before = app_state.drag_data.get("meta_before", meta_str)
                 update_meta_property(comp_element, meta_str, raw_x, raw_y)
-                undo.push(undo.MetaMoveCommand(
-                    [(comp_element, meta_before, raw_x, raw_y)],
-                    label=f"move {comp_element.get('name', 'component')}"
-                ))
+                if live_hooks.is_live():
+                    new_meta = comp_element.find("prop[@name='meta']")
+                    if new_meta is not None:
+                        live_hooks.live_set_prop_value(
+                            comp_element, "meta", new_meta.get("val", "0"))
+                if not app_state.live_mode:
+                    undo.push(undo.MetaMoveCommand(
+                        [(comp_element, meta_before, raw_x, raw_y)],
+                        label=f"move {comp_element.get('name', 'component')}"
+                    ))
                 app_state.mark_dirty()
 
     app_state.drag_data["tag"] = None