feat(gui): implement persona manager two-pane layout and dynamic model preference list

src/personas.py

@@ -47,6 +47,21 @@ class PersonaManager:
   data["personas"][persona.name] = persona.to_dict()
   self._save_file(path, data)
 
+ def get_persona_scope(self, name: str) -> str:
+  """Returns the scope ('global' or 'project') of a persona by name."""
+  if self.project_root:
+   project_path = paths.get_project_personas_path(self.project_root)
+   project_data = self._load_file(project_path)
+   if name in project_data.get("personas", {}):
+    return "project"
+  
+  global_path = paths.get_global_personas_path()
+  global_data = self._load_file(global_path)
+  if name in global_data.get("personas", {}):
+   return "global"
+   
+  return "project"
+
  def delete_persona(self, name: str, scope: str = "project") -> None:
   path = self._get_path(scope)
   data = self._load_file(path)