Fix unused variable in CompaniesPage

frontend/src/pages/companies/CompaniesPage.tsx

@@ -102,7 +102,7 @@ export const CompaniesPage = () => {
                 </div>
             ) : (
                 <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
-                    {filteredCompanies.map((company, idx) => (
+                    {filteredCompanies.map((company) => (
                         <div key={company.id} className="card-premium p-6 hover:shadow-lg transition-all border border-slate-100">
                             <div className="flex items-start justify-between mb-4">
                                 <div className="w-12 h-12 rounded-xl bg-primary-50 text-primary-600 flex items-center justify-center">