Enhance UI consistency in House components: Replace SectionTitle with styled headings in HouseCard, HouseManagement, and HousesSection for improved visual hierarchy and readability. Update styles for better alignment and user experience.

components/houses/HouseCard.tsx

@@ -72,7 +72,7 @@ export default function HouseCard({ house, onRequestSent }: HouseCardProps) {
     <Card className="p-4 sm:p-6">
       <div className="flex flex-col sm:flex-row sm:justify-between sm:items-start gap-4 mb-4">
         <div className="flex-1 min-w-0">
-          <h3 className="text-xl font-bold mb-2 break-words" style={{ color: "var(--foreground)" }}>
+          <h3 className="text-lg sm:text-xl font-bold mb-2 break-words" style={{ color: "var(--foreground)" }}>
             {house.name}
           </h3>
           {house.description && (