fix: change tools grid from 4 to 3 columns on xl breakpoint

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

components/ToolsGrid.tsx

@@ -23,7 +23,7 @@ export default function ToolsGrid() {
         </div>
 
         {/* Tools grid */}
-        <div className="grid grid-cols-1 sm:grid-cols-2 xl:grid-cols-4 gap-4">
+        <div className="grid grid-cols-1 sm:grid-cols-2 xl:grid-cols-3 gap-4">
           {tools.map((tool, index) => (
             <ToolCard
               key={tool.href}