feat(discounts): full تخفیف‌ها page with infinite scroll

Add a complete /discounts page (MondrianProductList grid, infinite scroll via
useGetHomeDiscounts) and link the home page "تخفیف‌ها" section to it with a
«مشاهده همه» link, mirroring the برترین فروشگاه‌ها → /sellers pattern.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/routes/_index.tsx

@@ -134,12 +134,24 @@ export default function HomePage() {
             id="section1"
             className="w-full gap-2 flex flex-col max-w-[100vw] lg:max-w-none lg:gap-5"
           >
-            <div className="w-full px-4 lg:px-0">
+            <div className="w-full px-4 lg:px-0 flex items-center justify-between">
+              <div>
                 <p className="text-B16 lg:text-B24 font-bold">تخفیف‌ها</p>
                 <p className="text-R14 lg:text-R16 text-GRAY">
                   فرصت‌هایی محدود برای انتخاب‌های هوشمندانه
                 </p>
               </div>
+              <Link
+                to="/discounts"
+                className="flex items-center gap-1 text-R14 text-gray-500 hover:text-gray-800 hover:underline transition-colors group"
+              >
+                <span>مشاهده همه</span>
+                <ChevronLeft
+                  size={16}
+                  className="group-hover:-translate-x-1 transition-transform"
+                />
+              </Link>
+            </div>
             <HorizontalProductList
               products={
                 discounts?.map((product) => ({

app/routes/discounts.tsx

@@ -0,0 +1,102 @@
+import { MetaFunction } from "@remix-run/node";
+import { useNavigate } from "@remix-run/react";
+import { ArrowRight, Tag } from "lucide-react";
+import { safeGoBack } from "~/utils/helpers";
+import { useGetHomeDiscounts } from "~/requestHandler/use-home-hooks";
+import MondrianProductList from "~/components/MondrianProductList";
+
+export default function Discounts() {
+  const navigate = useNavigate();
+  const {
+    data,
+    isLoading,
+    isError,
+    refetch,
+    fetchNextPage,
+    hasNextPage,
+    isFetchingNextPage,
+  } = useGetHomeDiscounts();
+
+  const products =
+    data?.pages.flatMap((page) => (page?.results as unknown[]) || []) || [];
+
+  const handleBack = () => safeGoBack(navigate);
+
+  return (
+    <div className="flex flex-col bg-WHITE pb-20">
+      {/* Header (mobile) */}
+      <div className="lg:hidden flex flex-row h-[65px] sticky top-0 z-30 bg-WHITE w-full items-center justify-center border-b border-inner-border">
+        <ArrowRight
+          onClick={handleBack}
+          className="absolute top-5 right-5 cursor-pointer"
+        />
+        <p className="text-B16 font-bold">تخفیف‌ها</p>
+      </div>
+
+      {/* Content */}
+      <div className="flex flex-col py-6 lg:max-w-[1320px] lg:mx-auto lg:w-full lg:px-8">
+        <div className="hidden lg:block mb-6 px-4 lg:px-0">
+          <h1 className="text-[28px] font-extrabold">تخفیف‌ها</h1>
+          <p className="text-R16 text-GRAY mt-1">
+            فرصت‌هایی محدود برای انتخاب‌های هوشمندانه
+          </p>
+        </div>
+
+        <MondrianProductList
+          // eslint-disable-next-line @typescript-eslint/no-explicit-any
+          products={(products as any[]).map((product) => ({
+            id: product?.id || "",
+            title: product?.title || "",
+            images: Array.isArray(product?.imageUrls) ? product.imageUrls : [],
+            basePrice: product?.basePrice || 0,
+            discountPercent: product?.discountPercent || 0,
+            discountPrice: product?.discountPrice || 0,
+            sellerName: product?.sellerName,
+            sellerLogo: product?.sellerLogo,
+            sellerUsername: product?.sellerUsername,
+          }))}
+          fetchNextPage={fetchNextPage}
+          hasNextPage={!!hasNextPage}
+          isFetchingNextPage={isFetchingNextPage}
+          isLoading={isLoading}
+          isError={isError}
+          refetch={refetch}
+          emptyState={{
+            image: <Tag size={80} />,
+            title: "در حال حاضر تخفیفی موجود نیست",
+            description: "به زودی پیشنهادهای ویژه‌ای اضافه خواهد شد",
+          }}
+        />
+      </div>
+    </div>
+  );
+}
+
+export const meta: MetaFunction = () => {
+  const title = "تخفیف‌ها | پیشنهادهای ویژه ویترون";
+  const description =
+    "جدیدترین محصولات تخفیف‌دار ویترون. خرید با بهترین قیمت از فروشگاه‌های معتبر.";
+  const imageUrl =
+    "https://vitrownstatics.s3.ir-thr-at1.arvanstorage.ir/SVG-06.svg?versionId=";
+
+  return [
+    { title },
+    { name: "description", content: description },
+    {
+      name: "keywords",
+      content: "تخفیف، حراج، فروش ویژه، خرید ارزان، ویترون",
+    },
+    { name: "robots", content: "index, follow" },
+
+    { property: "og:type", content: "website" },
+    { property: "og:title", content: title },
+    { property: "og:description", content: description },
+    { property: "og:image", content: imageUrl },
+    { property: "og:site_name", content: "ویترون" },
+    { property: "og:locale", content: "fa_IR" },
+
+    { name: "twitter:card", content: "summary_large_image" },
+    { name: "twitter:title", content: title },
+    { name: "twitter:description", content: description },
+  ];
+};