fix: Dice So Nice import v14 compat, override Foundry text colors for readability

- hooks.mjs: replace static dice-so-nice import with dynamic import
  using game.modules.get('dice-so-nice').id (path removed in v14)
- hooks.mjs: fix permission condition (|| -> &&), jQuery -> vanilla JS
- less/base.less: override --color-text-* and --button-text-color
  for both .themed.theme-dark (AppV2) and body.theme-dark (legacy apps)
- target #settings-config buttons + labels + hints for dark grays

module/system/dialogs/rollDialog.mjs

@@ -139,7 +139,7 @@ export default class RollDialog extends HandlebarsApplicationMixin(foundry.appli
 
   getHandicapSelect() {
     const sel = this.#getHandicap();
-    return parseInt(sel?.value, 10) || 1;
+    return Math.max(0, (parseInt(sel?.value, 10) || 1) - 1);
   }
 
   getSkillCategory() {