TOOLTIPS: game kit applet refactor — .token-tooltip → .tt + double-tooltip fix

- _applet-game-kit.html: all 5 token blocks use .tt + child classes (.tt-title,
  .tt-description, .tt-shoptalk, .tt-expiry); removed .token-tooltip-body wrapper
- gameboard.js: 4× querySelector('.token-tooltip') → querySelector('.tt')
- _gameboard.scss: extend hover suppressor to .tt so CSS hover doesn't show inline
  .tt when JS portal is active (fixed double tooltip visual bug)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/static_src/scss/_gameboard.scss

@@ -78,7 +78,8 @@ body.page-gameboard {
 
         .token { position: static; }
 
-        .token:hover .token-tooltip { display: none; }
+        .token:hover .token-tooltip,
+        .token:hover .tt { display: none; } // JS portal handles show/hide
 
         .token,
         .kit-item { font-size: 1.5rem; }