Mod naming rule and engine UI in engine mods

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.

manifest.json

@@ -1,10 +1,10 @@
 {
-  "id": "base2d",
-  "name": "2D Platform",
+  "id": "shell2d_base",
+  "name": "2D Shell",
   "version": "1.0.0",
   "author": "ct",
   "description": "2D presentation platform: base shell scene with the view box, toolbar, panel slots and notifications. Parent for all 2D mods; content mods fill the shell through scene patches.",
   "category": "engine, library",
-  "depends": ["time_base>=1", "interface>=1"],
+  "depends": ["time_base>=1", "ui_base>=1"],
   "ui": []
 }