Removed random comments and replaced em-dashes with hyphens.

Backend/Groups.py

@@ -20,9 +20,6 @@ def LoadGroups() -> dict[str, list[str]]:
     GroupsPath = GetGroupsPath()
 
     if not GroupsPath.is_file():
-        # First run after upgrading from the old boolean-flag admin model:
-        # seed the Admin group from whoever already had IsAdmin set, so
-        # nobody silently loses admin access.
         from Users import LoadUsers
 
         SeededAdmins = [
@@ -90,7 +87,6 @@ def SetGroupMembers(Name: str, Members: list[str]) -> None:
     if Name not in Groups:
         raise ValueError(f"Group '{Name}' does not exist.")
 
-    # De-duplicate while keeping things predictable.
     Groups[Name] = sorted(set(Members))
     SaveGroups(Groups)