Add house leaderboard feature: Integrate house leaderboard functionality in LeaderboardPage and LeaderboardSection components. Update userStatsService to fetch house leaderboard data, and enhance UI to display house rankings, scores, and member details. Update Prisma schema to include house-related models and relationships, and seed database with initial house data.

actions/houses/create.ts

@@ -0,0 +1,48 @@
+"use server";
+
+import { revalidatePath } from "next/cache";
+import { auth } from "@/lib/auth";
+import { houseService } from "@/services/houses/house.service";
+import {
+  ValidationError,
+  ConflictError,
+} from "@/services/errors";
+
+export async function createHouse(data: {
+  name: string;
+  description?: string | null;
+}) {
+  try {
+    const session = await auth();
+
+    if (!session?.user?.id) {
+      return {
+        success: false,
+        error: "Vous devez être connecté pour créer une maison",
+      };
+    }
+
+    const house = await houseService.createHouse({
+      name: data.name,
+      description: data.description,
+      creatorId: session.user.id,
+    });
+
+    revalidatePath("/houses");
+    revalidatePath("/profile");
+
+    return { success: true, message: "Maison créée avec succès", data: house };
+  } catch (error) {
+    console.error("Create house error:", error);
+
+    if (error instanceof ValidationError || error instanceof ConflictError) {
+      return { success: false, error: error.message };
+    }
+
+    return {
+      success: false,
+      error: "Une erreur est survenue lors de la création de la maison",
+    };
+  }
+}
+