Move _on_context_menu, _on_multi_context_menu, _is_child_of_menu into gui/context_menus.py. Pure dispatch to already-extracted controllers. main_window.py: 1400 -> 1140 lines. behavior change: none
Move _on_context_menu, _on_multi_context_menu, _is_child_of_menu into gui/context_menus.py. Pure dispatch to already-extracted controllers. main_window.py: 1400 -> 1140 lines. behavior change: none