fix(branding): comprehensive sweep — replace remaining primary-* legacy colors with accent tokens

frontend/src/components/common/LanguageSelector.tsx

@@ -84,7 +84,7 @@ export const LanguageSelector: React.FC = () => {
               onClick={() => handleLanguageChange(language.code)}
               className={`w-full text-left px-4 py-2 text-sm hover:bg-neutral-50 dark:hover:bg-neutral-700 flex items-center gap-3 ${
                 language.code === i18n.language
-                  ? 'text-primary-600 dark:text-primary-400 bg-primary-50 dark:bg-primary-900/30'
+                  ? 'text-accent bg-accent-dark/15'
                   : 'text-neutral-700 dark:text-neutral-300'
               }`}
             >

frontend/src/components/common/Loading.tsx

@@ -23,7 +23,7 @@ export const Loading: React.FC<LoadingProps> = ({
 
   const content = (
     <div className={clsx('flex flex-col items-center justify-center', className)}>
-      <Loader2 className={clsx('animate-spin text-primary-600', sizeStyles[size])} />
+      <Loader2 className={clsx('animate-spin text-accent', sizeStyles[size])} />
       {text && (
         <p className="mt-4 text-sm text-neutral-600">{text}</p>
       )}

frontend/src/components/common/SkipLink.tsx

@@ -4,7 +4,7 @@ export const SkipLink: React.FC = () => {
   return (
     <a
       href="#main-content"
-      className="sr-only focus:not-sr-only focus:absolute focus:top-4 focus:left-4 bg-primary-600 text-white px-4 py-2 rounded-lg z-50 focus:outline-none focus:ring-2 focus:ring-primary-700"
+      className="sr-only focus:not-sr-only focus:absolute focus:top-4 focus:left-4 bg-accent-dark text-white px-4 py-2 rounded-lg z-50 focus:outline-none focus:ring-2 focus:ring-primary-700"
     >
       Skip to main content
     </a>