feat: implement market page with QueryProvider and dynamic listings

- wrap root layout with QueryProvider for React Query
- replace market UnderConstruction placeholder with MarketClient and real data fetching
- implement search, pagination, and sort via search params using getActiveListings
- add necessary client components and queries
- update dependencies (e.g., prisma, pkg-types)

app/api/notifications/unread-count/route.ts

@@ -0,0 +1,30 @@
+import { NextRequest, NextResponse } from "next/server";
+import { requireAuth } from "@/lib/auth/middleware";
+import { getUnreadCount } from "@/lib/prisma/queries/notifications";
+
+/**
+ * GET /api/notifications/unread-count
+ * Retorna a contagem de notificações não lidas do usuário
+ */
+export async function GET(request: NextRequest) {
+  try {
+    const authResult = await requireAuth(request);
+    if (authResult instanceof NextResponse) return authResult;
+
+    const count = await getUnreadCount(authResult.userId);
+
+    return NextResponse.json(
+      {
+        success: true,
+        count,
+      },
+      { status: 200 }
+    );
+  } catch (error) {
+    return NextResponse.json(
+      { success: false, error: "Erro ao buscar contagem de notificações" },
+      { status: 500 }
+    );
+  }
+}
+