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

.lesshintrc

@@ -0,0 +1,48 @@
+{
+  "atom": false,
+  "borderZero": {
+    "style": "none"
+  },
+  "colorVariables": true,
+  "comment": false,
+  "depthLevel": 10,
+  "duplicateProperty": true,
+  "emptyRule": true,
+  "finalNewline": true,
+  "hexLength": "long",
+  "hexNotation": "lowercase",
+  "hexValidation": true,
+  "idSelector": false,
+  "important": true,
+  "importPath": [
+    "./less"
+  ],
+  "maxCharPerLine": 120,
+  "newlineAfterBlock": true,
+  "propertyOrdering": false,
+  "propertyUnits": true,
+  "qualifyingElement": [
+    "button",
+    "input",
+    "select",
+    "textarea"
+  ],
+  "selectorNaming": false,
+  "singleLinePerProperty": true,
+  "singleLinePerSelector": false,
+  "spaceAfterComma": true,
+  "spaceAfterComment": true,
+  "spaceAfterPropertyColon": "one",
+  "spaceAfterPropertyValue": true,
+  "spaceAroundCombinator": true,
+  "spaceAroundOperator": true,
+  "spaceBeforeBrace": "one",
+  "spaceBetweenParens": false,
+  "stringQuotes": "double",
+  "trailingSemicolon": true,
+  "trailingWhitespace": true,
+  "urlFormat": "relative",
+  "urlQuotes": true,
+  "variableNaming": false,
+  "zeroUnit": false
+}