Mods are renamed by role (shell2d_base, menu_base, ui_base, live2d_base,
editor_tools, cthangover_story, cthangover_murakami, cthangover_party) and
every reference follows. Engine UI prefabs (dialog, answers, message, game
menu, inventory, map, skills) and their panel entries moved out of the story
mod into the subsystem mods; the card_novel and vn_starter_novel collections
are removed.
The cooking_walk integration test moves here from the separate
cooking_walk_test mod as test_suites/cooking_walk, mounted as the virtual
mod cooking__cooking_walk only with --itest=cooking_walk.
cthangover