feat: add home featured toggle, improve account deletion UI, and update business schema and database configuration.

components/AnnuaireHero.tsx

@@ -56,9 +56,11 @@ const AnnuaireHero = ({ featuredBusiness }: { featuredBusiness: Business }) => {
             <h2 className="text-3xl md:text-4xl font-bold font-serif text-gray-900 mb-2">
               {featuredBusiness.name}
             </h2>
-            <p className="text-lg text-gray-600 mb-4 font-medium">
-              Dirigé par <span className="text-brand-600">{featuredBusiness.founderName}</span>
-            </p>
+            {featuredBusiness.founderName && (
+              <p className="text-lg text-gray-600 mb-4 font-medium">
+                Dirigé par <span className="text-brand-600">{featuredBusiness.founderName}</span>
+              </p>
+            )}
             
             <div className="flex flex-wrap gap-4 text-sm text-gray-500 mb-6">
               <div className="flex items-center"><Briefcase className="w-4 h-4 mr-1"/> {featuredBusiness.category}</div>