fix: enforce semantic contrast across admin

src/app/admin/users/[id]/user-quick-actions.tsx

@@ -127,7 +127,7 @@ export function UserQuickActions({ userId, username, isOnline }: UserQuickAction
               <Unplug className="mr-2 h-4 w-4" />
               Disconnect
               {isOnline && (
-                <Badge variant="default" className="ml-auto text-[10px] bg-green-600">
+                <Badge variant="default" className="ml-auto text-[10px] bg-[var(--color-success-subtle)]">
                   Online
                 </Badge>
               )}
@@ -209,7 +209,7 @@ export function UserQuickActions({ userId, username, isOnline }: UserQuickAction
               {newPassword}
             </code>
             <Button variant="ghost" size="icon" onClick={copyPassword}>
-              {copied ? <Check className="h-4 w-4 text-green-500" /> : <Copy className="h-4 w-4" />}
+              {copied ? <Check className="h-4 w-4 text-[var(--color-success-text-readable)]" /> : <Copy className="h-4 w-4" />}
             </Button>
           </div>
         </DialogContent>