ui_migration style(fix) Add less configuration for lint

webapp/stylelint.config.mjs

@@ -1,15 +1,22 @@
 // stylelint.config.mjs
 export default {
+  // This applies standard CSS rules to the whole project by default
   extends: ["stylelint-config-standard"],
 
   overrides: [
     {
       files: ["**/*.vue"],
       customSyntax: "postcss-html",
+      // If you write <style lang="less"> inside Vue components and get 
+      // the same error there, uncomment the rule below:
+      // rules: { "declaration-property-value-no-unknown": null }
     },
     {
       files: ["**/*.less"],
       customSyntax: "postcss-less",
+      // THIS IS THE FIX: Tell Stylelint to apply LESS-specific 
+      // rules (which ignore @ variables) only to these files.
+      extends: ["stylelint-config-standard-less"], 
     },
   ],
 
@@ -20,4 +27,4 @@ export default {
     "no-invalid-position-at-import-rule": null,
     "no-empty-source": null,
   },
-};
+};